---
_id: '7070'
abstract:
- lang: eng
text: 'Torque magnetization measurements on YBa2Cu3Oy (YBCO) at doping y=6.67 (p=0.12),
in dc fields (B) up to 33 T and temperatures down to 4.5 K, show that weak diamagnetism
persists above the extrapolated irreversibility field Hirr(T=0)≈24 T. The differential
susceptibility dM/dB, however, is more rapidly suppressed for B≳16 T than expected
from the properties of the low field superconducting state, and saturates at a
low value for fields B≳24 T. In addition, torque measurements on a p=0.11 YBCO
crystal in pulsed field up to 65 T and temperatures down to 8 K show similar behavior,
with no additional features at higher fields. We offer two candidate scenarios
to explain these observations: (a) superconductivity survives but is heavily suppressed
at high field by competition with charge-density-wave (CDW) order; (b) static
superconductivity disappears near 24 T and is followed by a region of fluctuating
superconductivity, which causes dM/dB to saturate at high field. The diamagnetic
signal observed above 50 T for the p=0.11 crystal at 40 K and below may be caused
by changes in the normal state susceptibility rather than bulk or fluctuating
superconductivity. There will be orbital (Landau) diamagnetism from electron pockets
and possibly a reduction in spin susceptibility caused by the stronger three-dimensional
ordered CDW.'
article_number: '180509'
article_processing_charge: No
article_type: original
author:
- first_name: Jing Fei
full_name: Yu, Jing Fei
last_name: Yu
- first_name: B. J.
full_name: Ramshaw, B. J.
last_name: Ramshaw
- first_name: I.
full_name: Kokanović, I.
last_name: Kokanović
- first_name: Kimberly A
full_name: Modic, Kimberly A
id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
last_name: Modic
orcid: 0000-0001-9760-3147
- first_name: N.
full_name: Harrison, N.
last_name: Harrison
- first_name: James
full_name: Day, James
last_name: Day
- first_name: Ruixing
full_name: Liang, Ruixing
last_name: Liang
- first_name: W. N.
full_name: Hardy, W. N.
last_name: Hardy
- first_name: D. A.
full_name: Bonn, D. A.
last_name: Bonn
- first_name: A.
full_name: McCollam, A.
last_name: McCollam
- first_name: S. R.
full_name: Julian, S. R.
last_name: Julian
- first_name: J. R.
full_name: Cooper, J. R.
last_name: Cooper
citation:
ama: Yu JF, Ramshaw BJ, Kokanović I, et al. Magnetization of underdoped YBa2Cu3Oy
above the irreversibility field. Physical Review B. 2015;92(18). doi:10.1103/physrevb.92.180509
apa: Yu, J. F., Ramshaw, B. J., Kokanović, I., Modic, K. A., Harrison, N., Day,
J., … Cooper, J. R. (2015). Magnetization of underdoped YBa2Cu3Oy above the irreversibility
field. Physical Review B. APS. https://doi.org/10.1103/physrevb.92.180509
chicago: Yu, Jing Fei, B. J. Ramshaw, I. Kokanović, Kimberly A Modic, N. Harrison,
James Day, Ruixing Liang, et al. “Magnetization of Underdoped YBa2Cu3Oy above
the Irreversibility Field.” Physical Review B. APS, 2015. https://doi.org/10.1103/physrevb.92.180509.
ieee: J. F. Yu et al., “Magnetization of underdoped YBa2Cu3Oy above the irreversibility
field,” Physical Review B, vol. 92, no. 18. APS, 2015.
ista: Yu JF, Ramshaw BJ, Kokanović I, Modic KA, Harrison N, Day J, Liang R, Hardy
WN, Bonn DA, McCollam A, Julian SR, Cooper JR. 2015. Magnetization of underdoped
YBa2Cu3Oy above the irreversibility field. Physical Review B. 92(18), 180509.
mla: Yu, Jing Fei, et al. “Magnetization of Underdoped YBa2Cu3Oy above the Irreversibility
Field.” Physical Review B, vol. 92, no. 18, 180509, APS, 2015, doi:10.1103/physrevb.92.180509.
short: J.F. Yu, B.J. Ramshaw, I. Kokanović, K.A. Modic, N. Harrison, J. Day, R.
Liang, W.N. Hardy, D.A. Bonn, A. McCollam, S.R. Julian, J.R. Cooper, Physical
Review B 92 (2015).
date_created: 2019-11-19T13:22:06Z
date_published: 2015-11-23T00:00:00Z
date_updated: 2021-01-12T08:11:42Z
day: '23'
doi: 10.1103/physrevb.92.180509
extern: '1'
intvolume: ' 92'
issue: '18'
language:
- iso: eng
month: '11'
oa_version: None
publication: Physical Review B
publication_identifier:
issn:
- 1098-0121
- 1550-235X
publication_status: published
publisher: APS
quality_controlled: '1'
status: public
title: Magnetization of underdoped YBa2Cu3Oy above the irreversibility field
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 92
year: '2015'
...
---
_id: '7456'
abstract:
- lang: eng
text: The rational design of monodisperse ferroelectric nanocrystals with controlled
size and shape and their organization into hierarchical structures has been a
critical step for understanding the polar ordering in nanoscale ferroelectrics,
as well as the design of nanocrystal-based functional materials which harness
the properties of individual nanoparticles and the collective interactions between
them. We report here on the synthesis and self-assembly of aggregate-free, single-crystalline
titanium-based perovskite nanoparticles with controlled morphology and surface
composition by using a simple, easily scalable and highly versatile colloidal
route. Single-crystalline, non-aggregated BaTiO3 colloidal nanocrystals, used
as a model system, have been prepared under solvothermal conditions at temperatures
as low as 180 °C. The shape of the nanocrystals was tuned from spheroidal to cubic
upon changing the polarity of the solvent, whereas their size was varied from
16 to 30 nm for spheres and 5 to 78 nm for cubes by changing the concentration
of the precursors and the reaction time, respectively. The hydrophobic, oleic
acid-passivated nanoparticles exhibit very good solubility in non-polar solvents
and can be rendered dispersible in polar solvents by a simple process involving
the oxidative cleavage of the double bond upon treating the nanopowders with the
Lemieux–von Rudloff reagent. Lattice dynamic analysis indicated that regardless
of their size, BaTiO3 nanocrystals present local disorder within the perovskite
unit cell, associated with the existence of polar ordering. We also demonstrate
for the first time that, in addition to being used for fabricating large area,
crack-free, highly uniform films, BaTiO3 nanocubes can serve as building blocks
for the design of 2D and 3D mesoscale structures, such as superlattices and superparticles.
Interestingly, the type of superlattice structure (simple cubic or face centered
cubic) appears to be determined by the type of solvent in which the nanocrystals
were dispersed. This approach provides an excellent platform for the synthesis
of other titanium-based perovskite colloidal nanocrystals with controlled chemical
composition, surface structure and morphology and for their assembly into complex
architectures, therefore opening the door for the design of novel mesoscale functional
materials/nanocomposites with potential applications in energy conversion, data
storage and the biomedical field.
article_processing_charge: No
article_type: original
author:
- first_name: Daniela
full_name: Caruntu, Daniela
last_name: Caruntu
- first_name: Taha
full_name: Rostamzadeh, Taha
last_name: Rostamzadeh
- first_name: Tommaso
full_name: Costanzo, Tommaso
id: D93824F4-D9BA-11E9-BB12-F207E6697425
last_name: Costanzo
orcid: 0000-0001-9732-3815
- first_name: Saman
full_name: Salemizadeh Parizi, Saman
last_name: Salemizadeh Parizi
- first_name: Gabriel
full_name: Caruntu, Gabriel
last_name: Caruntu
citation:
ama: Caruntu D, Rostamzadeh T, Costanzo T, Salemizadeh Parizi S, Caruntu G. Solvothermal
synthesis and controlled self-assembly of monodisperse titanium-based perovskite
colloidal nanocrystals. Nanoscale. 2015;7(30):12955-12969. doi:10.1039/c5nr00737b
apa: Caruntu, D., Rostamzadeh, T., Costanzo, T., Salemizadeh Parizi, S., & Caruntu,
G. (2015). Solvothermal synthesis and controlled self-assembly of monodisperse
titanium-based perovskite colloidal nanocrystals. Nanoscale. RSC. https://doi.org/10.1039/c5nr00737b
chicago: Caruntu, Daniela, Taha Rostamzadeh, Tommaso Costanzo, Saman Salemizadeh
Parizi, and Gabriel Caruntu. “Solvothermal Synthesis and Controlled Self-Assembly
of Monodisperse Titanium-Based Perovskite Colloidal Nanocrystals.” Nanoscale.
RSC, 2015. https://doi.org/10.1039/c5nr00737b.
ieee: D. Caruntu, T. Rostamzadeh, T. Costanzo, S. Salemizadeh Parizi, and G. Caruntu,
“Solvothermal synthesis and controlled self-assembly of monodisperse titanium-based
perovskite colloidal nanocrystals,” Nanoscale, vol. 7, no. 30. RSC, pp.
12955–12969, 2015.
ista: Caruntu D, Rostamzadeh T, Costanzo T, Salemizadeh Parizi S, Caruntu G. 2015.
Solvothermal synthesis and controlled self-assembly of monodisperse titanium-based
perovskite colloidal nanocrystals. Nanoscale. 7(30), 12955–12969.
mla: Caruntu, Daniela, et al. “Solvothermal Synthesis and Controlled Self-Assembly
of Monodisperse Titanium-Based Perovskite Colloidal Nanocrystals.” Nanoscale,
vol. 7, no. 30, RSC, 2015, pp. 12955–69, doi:10.1039/c5nr00737b.
short: D. Caruntu, T. Rostamzadeh, T. Costanzo, S. Salemizadeh Parizi, G. Caruntu,
Nanoscale 7 (2015) 12955–12969.
date_created: 2020-02-05T14:16:37Z
date_published: 2015-08-14T00:00:00Z
date_updated: 2023-02-23T13:08:24Z
day: '14'
doi: 10.1039/c5nr00737b
extern: '1'
external_id:
pmid:
- '26168304'
intvolume: ' 7'
issue: '30'
language:
- iso: eng
month: '08'
oa_version: None
page: 12955-12969
pmid: 1
publication: Nanoscale
publication_identifier:
issn:
- 2040-3364
- 2040-3372
publication_status: published
publisher: RSC
quality_controlled: '1'
status: public
title: Solvothermal synthesis and controlled self-assembly of monodisperse titanium-based
perovskite colloidal nanocrystals
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 7
year: '2015'
...
---
_id: '7457'
abstract:
- lang: eng
text: A new organic–inorganic ferroelectric hybrid capacitor designed by uniformly
incorporating surface modified monodisperse 15 nm ferroelectric BaTiO3 nanocubes
into non-polar polymer blends of poly(methyl methacrylate) (PMMA) polymer and
acrylonitrile-butadiene-styrene (ABS) terpolymer is described. The investigation
of spatial distribution of nanofillers via a non-distractive thermal pulse method
illustrates that the surface functionalization of nanocubes plays a key role in
the uniform distribution of charge polarization within the polymer matrix. The
discharged energy density of the nanocomposite with 30 vol% BaTiO3 nanocubes is
∼44 × 10−3 J cm−3, which is almost six times higher than that of the neat polymer.
The facile processing, along with the superior mechanical and electrical properties
of the BaTiO3/PMMA–ABS nanocomposites make them suitable for implementation into
capacitive electrical energy storage devices.
article_processing_charge: No
article_type: original
author:
- first_name: Saman Salemizadeh
full_name: Parizi, Saman Salemizadeh
last_name: Parizi
- first_name: Gavin
full_name: Conley, Gavin
last_name: Conley
- first_name: Tommaso
full_name: Costanzo, Tommaso
id: D93824F4-D9BA-11E9-BB12-F207E6697425
last_name: Costanzo
orcid: 0000-0001-9732-3815
- first_name: Bob
full_name: Howell, Bob
last_name: Howell
- first_name: Axel
full_name: Mellinger, Axel
last_name: Mellinger
- first_name: Gabriel
full_name: Caruntu, Gabriel
last_name: Caruntu
citation:
ama: Parizi SS, Conley G, Costanzo T, Howell B, Mellinger A, Caruntu G. Fabrication
of barium titanate/acrylonitrile-butadiene styrene/poly(methyl methacrylate) nanocomposite
films for hybrid ferroelectric capacitors. RSC Advances. 2015;5(93):76356-76362.
doi:10.1039/c5ra11347d
apa: Parizi, S. S., Conley, G., Costanzo, T., Howell, B., Mellinger, A., & Caruntu,
G. (2015). Fabrication of barium titanate/acrylonitrile-butadiene styrene/poly(methyl
methacrylate) nanocomposite films for hybrid ferroelectric capacitors. RSC
Advances. RSC. https://doi.org/10.1039/c5ra11347d
chicago: Parizi, Saman Salemizadeh, Gavin Conley, Tommaso Costanzo, Bob Howell,
Axel Mellinger, and Gabriel Caruntu. “Fabrication of Barium Titanate/Acrylonitrile-Butadiene
Styrene/Poly(Methyl Methacrylate) Nanocomposite Films for Hybrid Ferroelectric
Capacitors.” RSC Advances. RSC, 2015. https://doi.org/10.1039/c5ra11347d.
ieee: S. S. Parizi, G. Conley, T. Costanzo, B. Howell, A. Mellinger, and G. Caruntu,
“Fabrication of barium titanate/acrylonitrile-butadiene styrene/poly(methyl methacrylate)
nanocomposite films for hybrid ferroelectric capacitors,” RSC Advances,
vol. 5, no. 93. RSC, pp. 76356–76362, 2015.
ista: Parizi SS, Conley G, Costanzo T, Howell B, Mellinger A, Caruntu G. 2015. Fabrication
of barium titanate/acrylonitrile-butadiene styrene/poly(methyl methacrylate) nanocomposite
films for hybrid ferroelectric capacitors. RSC Advances. 5(93), 76356–76362.
mla: Parizi, Saman Salemizadeh, et al. “Fabrication of Barium Titanate/Acrylonitrile-Butadiene
Styrene/Poly(Methyl Methacrylate) Nanocomposite Films for Hybrid Ferroelectric
Capacitors.” RSC Advances, vol. 5, no. 93, RSC, 2015, pp. 76356–62, doi:10.1039/c5ra11347d.
short: S.S. Parizi, G. Conley, T. Costanzo, B. Howell, A. Mellinger, G. Caruntu,
RSC Advances 5 (2015) 76356–76362.
date_created: 2020-02-05T14:17:26Z
date_published: 2015-09-01T00:00:00Z
date_updated: 2023-02-23T13:08:26Z
day: '01'
doi: 10.1039/c5ra11347d
extern: '1'
intvolume: ' 5'
issue: '93'
language:
- iso: eng
month: '09'
oa_version: Submitted Version
page: 76356-76362
publication: RSC Advances
publication_identifier:
issn:
- 2046-2069
publication_status: published
publisher: RSC
quality_controlled: '1'
status: public
title: Fabrication of barium titanate/acrylonitrile-butadiene styrene/poly(methyl
methacrylate) nanocomposite films for hybrid ferroelectric capacitors
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 5
year: '2015'
...
---
_id: '982'
abstract:
- lang: eng
text: We propose a new approach to probing ergodicity and its breakdown in one-dimensional
quantum manybody systems based on their response to a local perturbation. We study
the distribution of matrix elements of a local operator between the system's eigenstates,
finding a qualitatively different behavior in the manybody localized (MBL) and
ergodic phases. To characterize how strongly a local perturbation modifies the
eigenstates, we introduce the parameter g(L) = (In (Vnm/δ)) which represents the
disorder-averaged ratio of a typical matrix element of a local operator V to energy
level spacing δ this parameter is reminiscent of the Thouless conductance in the
single-particle localization. We show that the parameter g(L) decreases with system
size L in the MBL phase and grows in the ergodic phase. We surmise that the delocalization
transition occurs when g(L) is independent of system size, g(L)=gc ~ 1. We illustrate
our approach by studying the many-body localization transition and resolving the
many-body mobility edge in a disordered one-dimensional XXZ spin-1=2 chain using
exact diagonalization and time-evolving block-decimation methods. Our criterion
for the MBL transition gives insights into microscopic details of transition.
Its direct physical consequences, in particular, logarithmically slow transport
at the transition and extensive entanglement entropy of the eigenstates, are consistent
with recent renormalization-group predictions.
acknowledgement: We acknowledge helpful discussions with Sid Parameswaran, Andrew
Potter, Antonello Scardicchio, Romain Vasseur, and especially with Ehud Altman and
David Huse. We would like to thank Miles Stoudenmire for the assistance with ITensor
library. Research at Perimeter Institute is supported by the Government of Canada
through Industry Canada and by the Province of Ontario through the Ministry of Economic
Development & Innovation. This research was supported by Gordon and Betty Moore
Foundation EPiQS Initiative through Grant No. GBMF4307 (M. S.), Sloan Foundation,
NSERC, and Early Researcher Award of Ontario (D. A.). This work made use of the
facilities of N8 HPC Centre of Excellence, provided and funded by the N8 consortium
and EPSRC (Grant No. EP/K000225/1). The Centre is coordinated by the Universities
of Leeds and Manchester.
author:
- first_name: Maksym
full_name: Maksym Serbyn
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Zlatko
full_name: Papić, Zlatko
last_name: Papić
- first_name: Dmitry
full_name: Abanin, Dmitry A
last_name: Abanin
citation:
ama: Serbyn M, Papić Z, Abanin D. Criterion for many-body localization-delocalization
phase transition. Physical Review X. 2015;5(4). doi:10.1103/PhysRevX.5.041047
apa: Serbyn, M., Papić, Z., & Abanin, D. (2015). Criterion for many-body localization-delocalization
phase transition. Physical Review X. American Physical Society. https://doi.org/10.1103/PhysRevX.5.041047
chicago: Serbyn, Maksym, Zlatko Papić, and Dmitry Abanin. “Criterion for Many-Body
Localization-Delocalization Phase Transition.” Physical Review X. American
Physical Society, 2015. https://doi.org/10.1103/PhysRevX.5.041047.
ieee: M. Serbyn, Z. Papić, and D. Abanin, “Criterion for many-body localization-delocalization
phase transition,” Physical Review X, vol. 5, no. 4. American Physical
Society, 2015.
ista: Serbyn M, Papić Z, Abanin D. 2015. Criterion for many-body localization-delocalization
phase transition. Physical Review X. 5(4).
mla: Serbyn, Maksym, et al. “Criterion for Many-Body Localization-Delocalization
Phase Transition.” Physical Review X, vol. 5, no. 4, American Physical
Society, 2015, doi:10.1103/PhysRevX.5.041047.
short: M. Serbyn, Z. Papić, D. Abanin, Physical Review X 5 (2015).
date_created: 2018-12-11T11:49:32Z
date_published: 2015-01-01T00:00:00Z
date_updated: 2021-01-12T08:22:25Z
day: '01'
doi: 10.1103/PhysRevX.5.041047
extern: 1
intvolume: ' 5'
issue: '4'
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1507.01635
month: '01'
oa: 1
publication: Physical Review X
publication_status: published
publisher: American Physical Society
publist_id: '6418'
quality_controlled: 0
status: public
title: Criterion for many-body localization-delocalization phase transition
type: journal_article
volume: 5
year: '2015'
...
---
_id: '99'
abstract:
- lang: eng
text: Quasiparticle excitations can compromise the performance of superconducting
devices, causing high-frequency dissipation, decoherence in Josephson qubits,
and braiding errors in proposed Majorana-based topological quantum computers.
Quasiparticle dynamics have been studied in detail in metallic superconductors
but remain relatively unexplored in semiconductor-superconductor structures, which
are now being intensely pursued in the context of topological superconductivity.
To this end, we use a system comprising a gate-confined semiconductor nanowire
with an epitaxially grown superconductor layer, yielding an isolated, proximitized
nanowire segment. We identify bound states in the semiconductor by means of bias
spectroscopy, determine the characteristic temperatures and magnetic fields for
quasiparticle excitations, and extract a parity lifetime (poisoning time) of the
bound state in the semiconductor exceeding 10 ms.
acknowledgement: Research support by Microsoft Project Q, the Danish National Research
Foundation, the Lundbeck Foundation, the Carlsberg Foundation, and the European
Commission. A.P.H. acknowledges support from the US Department of Energy, C.M.M.
acknowledges support from the Villum Foundation.
arxiv: 1
author:
- first_name: Andrew P
full_name: Higginbotham, Andrew P
id: 4AD6785A-F248-11E8-B48F-1D18A9856A87
last_name: Higginbotham
orcid: 0000-0003-2607-2363
- first_name: S M
full_name: Albrecht, S M
last_name: Albrecht
- first_name: Gediminas
full_name: Kiršanskas, Gediminas
last_name: Kiršanskas
- first_name: W
full_name: Chang, W
last_name: Chang
- first_name: Ferdinand
full_name: Kuemmeth, Ferdinand
last_name: Kuemmeth
- first_name: Peter
full_name: Krogstrup, Peter
last_name: Krogstrup
- first_name: Thomas
full_name: Jespersen, Thomas
last_name: Jespersen
- first_name: Jesper
full_name: Nygård, Jesper
last_name: Nygård
- first_name: Karsten
full_name: Flensberg, Karsten
last_name: Flensberg
- first_name: Charles
full_name: Marcus, Charles
last_name: Marcus
citation:
ama: Higginbotham AP, Albrecht SM, Kiršanskas G, et al. Parity lifetime of bound
states in a proximitized semiconductor nanowire. Nature Physics. 2015;11(12):1017-1021.
doi:10.1038/nphys3461
apa: Higginbotham, A. P., Albrecht, S. M., Kiršanskas, G., Chang, W., Kuemmeth,
F., Krogstrup, P., … Marcus, C. (2015). Parity lifetime of bound states in a proximitized
semiconductor nanowire. Nature Physics. Nature Publishing Group. https://doi.org/10.1038/nphys3461
chicago: Higginbotham, Andrew P, S M Albrecht, Gediminas Kiršanskas, W Chang, Ferdinand
Kuemmeth, Peter Krogstrup, Thomas Jespersen, Jesper Nygård, Karsten Flensberg,
and Charles Marcus. “Parity Lifetime of Bound States in a Proximitized Semiconductor
Nanowire.” Nature Physics. Nature Publishing Group, 2015. https://doi.org/10.1038/nphys3461.
ieee: A. P. Higginbotham et al., “Parity lifetime of bound states in a proximitized
semiconductor nanowire,” Nature Physics, vol. 11, no. 12. Nature Publishing
Group, pp. 1017–1021, 2015.
ista: Higginbotham AP, Albrecht SM, Kiršanskas G, Chang W, Kuemmeth F, Krogstrup
P, Jespersen T, Nygård J, Flensberg K, Marcus C. 2015. Parity lifetime of bound
states in a proximitized semiconductor nanowire. Nature Physics. 11(12), 1017–1021.
mla: Higginbotham, Andrew P., et al. “Parity Lifetime of Bound States in a Proximitized
Semiconductor Nanowire.” Nature Physics, vol. 11, no. 12, Nature Publishing
Group, 2015, pp. 1017–21, doi:10.1038/nphys3461.
short: A.P. Higginbotham, S.M. Albrecht, G. Kiršanskas, W. Chang, F. Kuemmeth, P.
Krogstrup, T. Jespersen, J. Nygård, K. Flensberg, C. Marcus, Nature Physics 11
(2015) 1017–1021.
date_created: 2018-12-11T11:44:37Z
date_published: 2015-09-14T00:00:00Z
date_updated: 2021-01-12T08:22:28Z
day: '14'
doi: 10.1038/nphys3461
extern: '1'
external_id:
arxiv:
- '1501.05155'
intvolume: ' 11'
issue: '12'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1501.05155
month: '09'
oa: 1
oa_version: Preprint
page: 1017 - 1021
publication: Nature Physics
publication_status: published
publisher: Nature Publishing Group
publist_id: '7955'
quality_controlled: '1'
status: public
title: Parity lifetime of bound states in a proximitized semiconductor nanowire
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 11
year: '2015'
...
---
_id: '354'
abstract:
- lang: eng
text: 'A simple and effective method to introduce precise amounts of doping in nanomaterials
produced from the bottom-up assembly of colloidal nanoparticles (NPs) is described.
The procedure takes advantage of a ligand displacement step to incorporate controlled
concentrations of halide ions while removing carboxylic acids from the NP surface.
Upon consolidation of the NPs into dense pellets, halide ions diffuse within the
crystal structure, doping the anion sublattice and achieving n-type electrical
doping. Through the characterization of the thermoelectric properties of nanocrystalline
PbS, we demonstrate this strategy to be effective to control charge transport
properties on thermoelectric nanomaterials assembled from NP building blocks.
This approach is subsequently extended to PbTexSe1-x@PbS core-shell NPs, where
a significant enhancement of the thermoelectric figure of merit is achieved. '
acknowledgement: At IREC, work was supported by European Regional Development Funds
and the Framework 7 program under project UNION (FP7-NMP 310250). M.I. and S.O.
thank AGAUR for their Beatriu i Pinós postdoctoral grant and the PhD grant, respectively.
At Northwestern, work was supported by the Revolutionary Materials for Solid State
Energy Conversion, an Energy Frontier Research Center funded by the U.S. Department
of Energy, Office of Science, and Office of Basic Energy Sciences under Award Number
DE-SC0001054.
article_processing_charge: No
article_type: original
author:
- first_name: Maria
full_name: Ibáñez, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibáñez
orcid: 0000-0001-5013-2843
- first_name: Rachel
full_name: Korkosz, Rachel
last_name: Korkosz
- first_name: Zhishan
full_name: Luo, Zhishan
last_name: Luo
- first_name: Pau
full_name: Riba, Pau
last_name: Riba
- first_name: Doris
full_name: Cadavid, Doris
last_name: Cadavid
- first_name: Silvia
full_name: Ortega, Silvia
last_name: Ortega
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
- first_name: Mercouri
full_name: Kanatzidis, Mercouri
last_name: Kanatzidis
citation:
ama: Ibáñez M, Korkosz R, Luo Z, et al. Electron doping in bottom up engineered
thermoelectric nanomaterials through HCl mediated ligand displacement. Journal
of the American Chemical Society. 2015;137(12):4046-4049. doi:10.1021/jacs.5b00091
apa: Ibáñez, M., Korkosz, R., Luo, Z., Riba, P., Cadavid, D., Ortega, S., … Kanatzidis,
M. (2015). Electron doping in bottom up engineered thermoelectric nanomaterials
through HCl mediated ligand displacement. Journal of the American Chemical
Society. American Chemical Society. https://doi.org/10.1021/jacs.5b00091
chicago: Ibáñez, Maria, Rachel Korkosz, Zhishan Luo, Pau Riba, Doris Cadavid, Silvia
Ortega, Andreu Cabot, and Mercouri Kanatzidis. “Electron Doping in Bottom up Engineered
Thermoelectric Nanomaterials through HCl Mediated Ligand Displacement.” Journal
of the American Chemical Society. American Chemical Society, 2015. https://doi.org/10.1021/jacs.5b00091.
ieee: M. Ibáñez et al., “Electron doping in bottom up engineered thermoelectric
nanomaterials through HCl mediated ligand displacement,” Journal of the American
Chemical Society, vol. 137, no. 12. American Chemical Society, pp. 4046–4049,
2015.
ista: Ibáñez M, Korkosz R, Luo Z, Riba P, Cadavid D, Ortega S, Cabot A, Kanatzidis
M. 2015. Electron doping in bottom up engineered thermoelectric nanomaterials
through HCl mediated ligand displacement. Journal of the American Chemical Society.
137(12), 4046–4049.
mla: Ibáñez, Maria, et al. “Electron Doping in Bottom up Engineered Thermoelectric
Nanomaterials through HCl Mediated Ligand Displacement.” Journal of the American
Chemical Society, vol. 137, no. 12, American Chemical Society, 2015, pp. 4046–49,
doi:10.1021/jacs.5b00091.
short: M. Ibáñez, R. Korkosz, Z. Luo, P. Riba, D. Cadavid, S. Ortega, A. Cabot,
M. Kanatzidis, Journal of the American Chemical Society 137 (2015) 4046–4049.
date_created: 2018-12-11T11:45:59Z
date_published: 2015-03-11T00:00:00Z
date_updated: 2021-01-12T07:44:10Z
day: '11'
doi: 10.1021/jacs.5b00091
extern: '1'
intvolume: ' 137'
issue: '12'
language:
- iso: eng
month: '03'
oa_version: None
page: 4046 - 4049
publication: Journal of the American Chemical Society
publication_status: published
publisher: American Chemical Society
publist_id: '7470'
quality_controlled: '1'
status: public
title: Electron doping in bottom up engineered thermoelectric nanomaterials through
HCl mediated ligand displacement
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 137
year: '2015'
...
---
_id: '361'
abstract:
- lang: eng
text: We report the synthesis and photocatalytic and magnetic characterization of
colloidal nanoheterostructures formed by combining a Pt-based magnetic metal alloy
(PtCo, PtNi) with Cu2ZnSnS4 (CZTS). While CZTS is one of the main candidate materials
for solar energy conversion, the introduction of a Pt-based alloy on its surface
strongly influences its chemical and electronic properties, ultimately determining
its functionality. In this regard, up to a 15-fold increase of the photocatalytic
hydrogen evolution activity was obtained with CZTS–PtCo when compared with CZTS.
Furthermore, two times higher hydrogen evolution rates were obtained for CZTS–PtCo
when compared with CZTS–Pt, in spite of the lower precious metal loading of the
former. Besides, the magnetic properties of the PtCo nanoparticles attached to
the CZTS nanocrystals were retained in the heterostructures, which could facilitate
catalyst purification and recovery for its posterior recycling and/or reutilization.
acknowledgement: This work was supported by the National Natural Science Foundation
of China (Grant 21401212), Fundamental Research Funds for the Central Universities
(2652015086), the Framework 7 program under project SCALENANO (FP7-NMP-ENERGY-2011-284486),
and the MICINN project ENE2013-46624-C4-3-R. Authors acknowledge the funding from
Generalitat de Catalunya 2014 SGR 1638.
article_processing_charge: No
author:
- first_name: Xuelian
full_name: Yu, Xuelian
last_name: Yu
- first_name: Xiaoqiang
full_name: An, Xiaoqiang
last_name: An
- first_name: Aziz
full_name: Genç, Aziz
last_name: Genç
- first_name: Maria
full_name: Ibáñez, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibáñez
orcid: 0000-0001-5013-2843
- first_name: Jordi
full_name: Arbiol, Jordi
last_name: Arbiol
- first_name: Yihe
full_name: Zhang, Yihe
last_name: Zhang
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
citation:
ama: Yu X, An X, Genç A, et al. Cu2ZnSnS4–PtM (M = Co, Ni) nanoheterostructures
for photocatalytic hydrogen evolution. Journal of Physical Chemistry C.
2015;119(38):21882-21888. doi:10.1021/acs.jpcc.5b06199
apa: Yu, X., An, X., Genç, A., Ibáñez, M., Arbiol, J., Zhang, Y., & Cabot, A.
(2015). Cu2ZnSnS4–PtM (M = Co, Ni) nanoheterostructures for photocatalytic hydrogen
evolution. Journal of Physical Chemistry C. American Chemical Society.
https://doi.org/10.1021/acs.jpcc.5b06199
chicago: Yu, Xuelian, Xiaoqiang An, Aziz Genç, Maria Ibáñez, Jordi Arbiol, Yihe
Zhang, and Andreu Cabot. “Cu2ZnSnS4–PtM (M = Co, Ni) Nanoheterostructures for
Photocatalytic Hydrogen Evolution.” Journal of Physical Chemistry C. American
Chemical Society, 2015. https://doi.org/10.1021/acs.jpcc.5b06199.
ieee: X. Yu et al., “Cu2ZnSnS4–PtM (M = Co, Ni) nanoheterostructures for
photocatalytic hydrogen evolution,” Journal of Physical Chemistry C, vol.
119, no. 38. American Chemical Society, pp. 21882–21888, 2015.
ista: Yu X, An X, Genç A, Ibáñez M, Arbiol J, Zhang Y, Cabot A. 2015. Cu2ZnSnS4–PtM
(M = Co, Ni) nanoheterostructures for photocatalytic hydrogen evolution. Journal
of Physical Chemistry C. 119(38), 21882–21888.
mla: Yu, Xuelian, et al. “Cu2ZnSnS4–PtM (M = Co, Ni) Nanoheterostructures for Photocatalytic
Hydrogen Evolution.” Journal of Physical Chemistry C, vol. 119, no. 38,
American Chemical Society, 2015, pp. 21882–88, doi:10.1021/acs.jpcc.5b06199.
short: X. Yu, X. An, A. Genç, M. Ibáñez, J. Arbiol, Y. Zhang, A. Cabot, Journal
of Physical Chemistry C 119 (2015) 21882–21888.
date_created: 2018-12-11T11:46:01Z
date_published: 2015-08-26T00:00:00Z
date_updated: 2021-01-12T07:44:38Z
day: '26'
doi: 10.1021/acs.jpcc.5b06199
extern: '1'
intvolume: ' 119'
issue: '38'
language:
- iso: eng
month: '08'
oa_version: None
page: 21882 - 21888
publication: Journal of Physical Chemistry C
publication_status: published
publisher: American Chemical Society
publist_id: '7468'
status: public
title: Cu2ZnSnS4–PtM (M = Co, Ni) nanoheterostructures for photocatalytic hydrogen
evolution
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 119
year: '2015'
...
---
_id: '362'
abstract:
- lang: eng
text: 'Monodisperse Pd2Sn nanorods with tuned size and aspect ratio were prepared
by co-reduction of metal salts in the presence of trioctylphosphine, amine, and
chloride ions. Asymmetric Pd2Sn nanostructures were achieved by the selective
desorption of a surfactant mediated by chlorine ions. A preliminary evaluation
of the geometry influence on catalytic properties evidenced Pd2Sn nanorods to
have improved catalytic performance. In view of these results, Pd2Sn nanorods
were also evaluated for water denitration. '
article_processing_charge: No
author:
- first_name: Zhishan
full_name: Lu, Zhishan
last_name: Lu
- first_name: Maria
full_name: Ibáñez, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibáñez
orcid: 0000-0001-5013-2843
- first_name: Ana
full_name: Antolín, Ana
last_name: Antolín
- first_name: Aziz
full_name: Genç, Aziz
last_name: Genç
- first_name: Alexey
full_name: Shavel, Alexey
last_name: Shavel
- first_name: Sandra
full_name: Contreras, Sandra
last_name: Contreras
- first_name: Francesc
full_name: Medina, Francesc
last_name: Medina
- first_name: Jordi
full_name: Arbiol, Jordi
last_name: Arbiol
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
citation:
ama: Lu Z, Ibáñez M, Antolín A, et al. Size and aspect ratio control of Pd inf 2
inf Sn nanorods and their water denitration properties. Langmuir. 2015;31(13):3952-3957.
doi:10.1021/la504906q
apa: Lu, Z., Ibáñez, M., Antolín, A., Genç, A., Shavel, A., Contreras, S., … Cabot,
A. (2015). Size and aspect ratio control of Pd inf 2 inf Sn nanorods and their
water denitration properties. Langmuir. American Chemical Society. https://doi.org/10.1021/la504906q
chicago: Lu, Zhishan, Maria Ibáñez, Ana Antolín, Aziz Genç, Alexey Shavel, Sandra
Contreras, Francesc Medina, Jordi Arbiol, and Andreu Cabot. “Size and Aspect Ratio
Control of Pd Inf 2 Inf Sn Nanorods and Their Water Denitration Properties.” Langmuir.
American Chemical Society, 2015. https://doi.org/10.1021/la504906q.
ieee: Z. Lu et al., “Size and aspect ratio control of Pd inf 2 inf Sn nanorods
and their water denitration properties,” Langmuir, vol. 31, no. 13. American
Chemical Society, pp. 3952–3957, 2015.
ista: Lu Z, Ibáñez M, Antolín A, Genç A, Shavel A, Contreras S, Medina F, Arbiol
J, Cabot A. 2015. Size and aspect ratio control of Pd inf 2 inf Sn nanorods and
their water denitration properties. Langmuir. 31(13), 3952–3957.
mla: Lu, Zhishan, et al. “Size and Aspect Ratio Control of Pd Inf 2 Inf Sn Nanorods
and Their Water Denitration Properties.” Langmuir, vol. 31, no. 13, American
Chemical Society, 2015, pp. 3952–57, doi:10.1021/la504906q.
short: Z. Lu, M. Ibáñez, A. Antolín, A. Genç, A. Shavel, S. Contreras, F. Medina,
J. Arbiol, A. Cabot, Langmuir 31 (2015) 3952–3957.
date_created: 2018-12-11T11:46:02Z
date_published: 2015-04-07T00:00:00Z
date_updated: 2021-01-12T07:44:42Z
day: '07'
doi: 10.1021/la504906q
extern: '1'
intvolume: ' 31'
issue: '13'
language:
- iso: eng
month: '04'
oa_version: None
page: 3952 - 3957
publication: Langmuir
publication_status: published
publisher: American Chemical Society
publist_id: '7469'
status: public
title: Size and aspect ratio control of Pd inf 2 inf Sn nanorods and their water denitration
properties
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 31
year: '2015'
...
---
_id: '388'
abstract:
- lang: eng
text: We use ultrafast optical spectroscopy to observe binding of charged single-particle
excitations (SE) in the magnetically frustrated Mott insulator Na2IrO3. Above
the antiferromagnetic ordering temperature (TN) the system response is due to
both Hubbard excitons (HE) and their constituent unpaired SE. The SE response
becomes strongly suppressed immediately below TN. We argue that this increase
in binding energy is due to a unique interplay between the frustrated Kitaev and
the weak Heisenberg-type ordering term in the Hamiltonian, mediating an effective
interaction between the spin-singlet SE. This interaction grows with distance
causing the SE to become trapped in the HE, similar to quark confinement inside
hadrons. This binding of charged particles, induced by magnetic ordering, is a
result of a confinement-deconfinement transition of spin excitations. This observation
provides evidence for spin liquid type behavior which is expected in Na2IrO3.
article_processing_charge: No
article_type: original
author:
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
- first_name: Fahad
full_name: Mahmood, Fahad
last_name: Mahmood
- first_name: Gang
full_name: Cao, Gang
last_name: Cao
- first_name: Nuh
full_name: Gedik, Nuh
last_name: Gedik
citation:
ama: Alpichshev Z, Mahmood F, Cao G, Gedik N. Confinement deconfinement transition
as an indication of spin liquid type behavior in Na2IrO3. Physical Review Letters.
2015;114(1). doi:10.1103/PhysRevLett.114.017203
apa: Alpichshev, Z., Mahmood, F., Cao, G., & Gedik, N. (2015). Confinement deconfinement
transition as an indication of spin liquid type behavior in Na2IrO3. Physical
Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.114.017203
chicago: Alpichshev, Zhanybek, Fahad Mahmood, Gang Cao, and Nuh Gedik. “Confinement
Deconfinement Transition as an Indication of Spin Liquid Type Behavior in Na2IrO3.”
Physical Review Letters. American Physical Society, 2015. https://doi.org/10.1103/PhysRevLett.114.017203.
ieee: Z. Alpichshev, F. Mahmood, G. Cao, and N. Gedik, “Confinement deconfinement
transition as an indication of spin liquid type behavior in Na2IrO3,” Physical
Review Letters, vol. 114, no. 1. American Physical Society, 2015.
ista: Alpichshev Z, Mahmood F, Cao G, Gedik N. 2015. Confinement deconfinement transition
as an indication of spin liquid type behavior in Na2IrO3. Physical Review Letters.
114(1).
mla: Alpichshev, Zhanybek, et al. “Confinement Deconfinement Transition as an Indication
of Spin Liquid Type Behavior in Na2IrO3.” Physical Review Letters, vol.
114, no. 1, American Physical Society, 2015, doi:10.1103/PhysRevLett.114.017203.
short: Z. Alpichshev, F. Mahmood, G. Cao, N. Gedik, Physical Review Letters 114
(2015).
date_created: 2018-12-11T11:46:11Z
date_published: 2015-07-07T00:00:00Z
date_updated: 2021-01-12T07:52:54Z
day: '07'
doi: 10.1103/PhysRevLett.114.017203
extern: '1'
intvolume: ' 114'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://dspace.mit.edu/handle/1721.1/92979
month: '07'
oa: 1
oa_version: Published Version
publication: Physical Review Letters
publication_status: published
publisher: American Physical Society
publist_id: '7441'
quality_controlled: '1'
status: public
title: Confinement deconfinement transition as an indication of spin liquid type behavior
in Na2IrO3
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 114
year: '2015'
...
---
_id: '8183'
abstract:
- lang: eng
text: "We study conditions under which a finite simplicial complex $K$ can be mapped
to $\\mathbb R^d$ without higher-multiplicity intersections. An almost $r$-embedding
is a map $f: K\\to \\mathbb R^d$ such that the images of any $r$\r\npairwise disjoint
simplices of $K$ do not have a common point. We show that if $r$ is not a prime
power and $d\\geq 2r+1$, then there is a counterexample to the topological Tverberg
conjecture, i.e., there is an almost $r$-embedding of\r\nthe $(d+1)(r-1)$-simplex
in $\\mathbb R^d$. This improves on previous constructions of counterexamples
(for $d\\geq 3r$) based on a series of papers by M. \\\"Ozaydin, M. Gromov, P.
Blagojevi\\'c, F. Frick, G. Ziegler, and the second and fourth present authors.
The counterexamples are obtained by proving the following algebraic criterion
in codimension 2: If $r\\ge3$ and if $K$ is a finite $2(r-1)$-complex then there
exists an almost $r$-embedding $K\\to \\mathbb R^{2r}$ if and only if there exists
a general position PL map $f:K\\to \\mathbb R^{2r}$ such that the algebraic intersection
number of the $f$-images of any $r$ pairwise disjoint simplices of $K$ is zero.
This result can be restated in terms of cohomological obstructions or equivariant
maps, and extends an analogous codimension 3 criterion by the second and fourth
authors. As another application we classify ornaments $f:S^3 \\sqcup S^3\\sqcup
S^3\\to \\mathbb R^5$ up to ornament\r\nconcordance. It follows from work of M.
Freedman, V. Krushkal and P. Teichner that the analogous criterion for $r=2$ is
false. We prove a lemma on singular higher-dimensional Borromean rings, yielding
an elementary proof of the counterexample."
acknowledgement: We would like to thank A. Klyachko, V. Krushkal, S. Melikhov, M.
Tancer, P. Teichner and anonymous referees for helpful discussions.
article_number: '1511.03501'
article_processing_charge: No
arxiv: 1
author:
- first_name: Sergey
full_name: Avvakumov, Sergey
id: 3827DAC8-F248-11E8-B48F-1D18A9856A87
last_name: Avvakumov
orcid: 0000-0002-7840-5062
- first_name: Isaac
full_name: Mabillard, Isaac
id: 32BF9DAA-F248-11E8-B48F-1D18A9856A87
last_name: Mabillard
- first_name: A.
full_name: Skopenkov, A.
last_name: Skopenkov
- first_name: Uli
full_name: Wagner, Uli
id: 36690CA2-F248-11E8-B48F-1D18A9856A87
last_name: Wagner
orcid: 0000-0002-1494-0568
citation:
ama: Avvakumov S, Mabillard I, Skopenkov A, Wagner U. Eliminating higher-multiplicity
intersections, III. Codimension 2. arXiv. doi:10.48550/arXiv.1511.03501
apa: Avvakumov, S., Mabillard, I., Skopenkov, A., & Wagner, U. (n.d.). Eliminating
higher-multiplicity intersections, III. Codimension 2. arXiv. https://doi.org/10.48550/arXiv.1511.03501
chicago: Avvakumov, Sergey, Isaac Mabillard, A. Skopenkov, and Uli Wagner. “Eliminating
Higher-Multiplicity Intersections, III. Codimension 2.” ArXiv, n.d. https://doi.org/10.48550/arXiv.1511.03501.
ieee: S. Avvakumov, I. Mabillard, A. Skopenkov, and U. Wagner, “Eliminating higher-multiplicity
intersections, III. Codimension 2,” arXiv. .
ista: Avvakumov S, Mabillard I, Skopenkov A, Wagner U. Eliminating higher-multiplicity
intersections, III. Codimension 2. arXiv, 1511.03501.
mla: Avvakumov, Sergey, et al. “Eliminating Higher-Multiplicity Intersections, III.
Codimension 2.” ArXiv, 1511.03501, doi:10.48550/arXiv.1511.03501.
short: S. Avvakumov, I. Mabillard, A. Skopenkov, U. Wagner, ArXiv (n.d.).
corr_author: '1'
date_created: 2020-07-30T10:45:19Z
date_published: 2015-11-15T00:00:00Z
date_updated: 2026-04-08T07:25:54Z
day: '15'
department:
- _id: UlWa
doi: 10.48550/arXiv.1511.03501
external_id:
arxiv:
- '1511.03501'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1511.03501
month: '11'
oa: 1
oa_version: Preprint
publication: arXiv
publication_status: draft
related_material:
record:
- id: '9308'
relation: later_version
status: public
- id: '10220'
relation: later_version
status: public
- id: '8156'
relation: dissertation_contains
status: public
status: public
title: Eliminating higher-multiplicity intersections, III. Codimension 2
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2015'
...
---
_id: '1576'
abstract:
- lang: eng
text: 'Gene expression is controlled primarily by interactions between transcription
factor proteins (TFs) and the regulatory DNA sequence, a process that can be captured
well by thermodynamic models of regulation. These models, however, neglect regulatory
crosstalk: the possibility that noncognate TFs could initiate transcription, with
potentially disastrous effects for the cell. Here, we estimate the importance
of crosstalk, suggest that its avoidance strongly constrains equilibrium models
of TF binding, and propose an alternative nonequilibrium scheme that implements
kinetic proofreading to suppress erroneous initiation. This proposal is consistent
with the observed covalent modifications of the transcriptional apparatus and
predicts increased noise in gene expression as a trade-off for improved specificity.
Using information theory, we quantify this trade-off to find when optimal proofreading
architectures are favored over their equilibrium counterparts. Such architectures
exhibit significant super-Poisson noise at low expression in steady state.'
article_number: '248101'
article_processing_charge: No
arxiv: 1
author:
- first_name: Sarah A
full_name: Cepeda Humerez, Sarah A
id: 3DEE19A4-F248-11E8-B48F-1D18A9856A87
last_name: Cepeda Humerez
- first_name: Georg
full_name: Rieckh, Georg
id: 34DA8BD6-F248-11E8-B48F-1D18A9856A87
last_name: Rieckh
- first_name: Gasper
full_name: Tkacik, Gasper
id: 3D494DCA-F248-11E8-B48F-1D18A9856A87
last_name: Tkacik
orcid: 0000-0002-6699-1455
citation:
ama: Cepeda Humerez SA, Rieckh G, Tkačik G. Stochastic proofreading mechanism alleviates
crosstalk in transcriptional regulation. Physical Review Letters. 2015;115(24).
doi:10.1103/PhysRevLett.115.248101
apa: Cepeda Humerez, S. A., Rieckh, G., & Tkačik, G. (2015). Stochastic proofreading
mechanism alleviates crosstalk in transcriptional regulation. Physical Review
Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.115.248101
chicago: Cepeda Humerez, Sarah A, Georg Rieckh, and Gašper Tkačik. “Stochastic Proofreading
Mechanism Alleviates Crosstalk in Transcriptional Regulation.” Physical Review
Letters. American Physical Society, 2015. https://doi.org/10.1103/PhysRevLett.115.248101.
ieee: S. A. Cepeda Humerez, G. Rieckh, and G. Tkačik, “Stochastic proofreading mechanism
alleviates crosstalk in transcriptional regulation,” Physical Review Letters,
vol. 115, no. 24. American Physical Society, 2015.
ista: Cepeda Humerez SA, Rieckh G, Tkačik G. 2015. Stochastic proofreading mechanism
alleviates crosstalk in transcriptional regulation. Physical Review Letters. 115(24),
248101.
mla: Cepeda Humerez, Sarah A., et al. “Stochastic Proofreading Mechanism Alleviates
Crosstalk in Transcriptional Regulation.” Physical Review Letters, vol.
115, no. 24, 248101, American Physical Society, 2015, doi:10.1103/PhysRevLett.115.248101.
short: S.A. Cepeda Humerez, G. Rieckh, G. Tkačik, Physical Review Letters 115 (2015).
corr_author: '1'
date_created: 2018-12-11T11:52:49Z
date_published: 2015-12-08T00:00:00Z
date_updated: 2026-04-08T13:55:46Z
day: '08'
department:
- _id: GaTk
doi: 10.1103/PhysRevLett.115.248101
ec_funded: 1
external_id:
arxiv:
- '1504.05716'
isi:
- '000366106700014'
intvolume: ' 115'
isi: 1
issue: '24'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1504.05716
month: '12'
oa: 1
oa_version: Preprint
project:
- _id: 25B07788-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '250152'
name: Limits to selection in biology and in evolutionary computation
publication: Physical Review Letters
publication_status: published
publisher: American Physical Society
publist_id: '5595'
quality_controlled: '1'
related_material:
record:
- id: '6473'
relation: part_of_dissertation
status: public
scopus_import: '1'
status: public
title: Stochastic proofreading mechanism alleviates crosstalk in transcriptional regulation
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 115
year: '2015'
...
---
_id: '1677'
abstract:
- lang: eng
text: We consider real symmetric and complex Hermitian random matrices with the
additional symmetry hxy = hN-y,N-x. The matrix elements are independent (up to
the fourfold symmetry) and not necessarily identically distributed. This ensemble
naturally arises as the Fourier transform of a Gaussian orthogonal ensemble. Italso
occurs as the flip matrix model - an approximation of the two-dimensional Anderson
model at small disorder. We show that the density of states converges to the Wigner
semicircle law despite the new symmetry type. We also prove the local version
of the semicircle law on the optimal scale.
article_number: '103301'
article_processing_charge: No
arxiv: 1
author:
- first_name: Johannes
full_name: Alt, Johannes
id: 36D3D8B6-F248-11E8-B48F-1D18A9856A87
last_name: Alt
citation:
ama: Alt J. The local semicircle law for random matrices with a fourfold symmetry.
Journal of Mathematical Physics. 2015;56(10). doi:10.1063/1.4932606
apa: Alt, J. (2015). The local semicircle law for random matrices with a fourfold
symmetry. Journal of Mathematical Physics. American Institute of Physics.
https://doi.org/10.1063/1.4932606
chicago: Alt, Johannes. “The Local Semicircle Law for Random Matrices with a Fourfold
Symmetry.” Journal of Mathematical Physics. American Institute of Physics,
2015. https://doi.org/10.1063/1.4932606.
ieee: J. Alt, “The local semicircle law for random matrices with a fourfold symmetry,”
Journal of Mathematical Physics, vol. 56, no. 10. American Institute of
Physics, 2015.
ista: Alt J. 2015. The local semicircle law for random matrices with a fourfold
symmetry. Journal of Mathematical Physics. 56(10), 103301.
mla: Alt, Johannes. “The Local Semicircle Law for Random Matrices with a Fourfold
Symmetry.” Journal of Mathematical Physics, vol. 56, no. 10, 103301, American
Institute of Physics, 2015, doi:10.1063/1.4932606.
short: J. Alt, Journal of Mathematical Physics 56 (2015).
corr_author: '1'
date_created: 2018-12-11T11:53:25Z
date_published: 2015-10-09T00:00:00Z
date_updated: 2026-04-08T14:11:36Z
day: '09'
department:
- _id: LaEr
doi: 10.1063/1.4932606
ec_funded: 1
external_id:
arxiv:
- '1506.04683'
isi:
- '000364237000026'
intvolume: ' 56'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1506.04683
month: '10'
oa: 1
oa_version: Preprint
project:
- _id: 258DCDE6-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '338804'
name: Random matrices, universality and disordered quantum systems
publication: Journal of Mathematical Physics
publication_status: published
publisher: American Institute of Physics
publist_id: '5472'
quality_controlled: '1'
related_material:
record:
- id: '149'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: The local semicircle law for random matrices with a fourfold symmetry
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 56
year: '2015'
...
---
_id: '1678'
abstract:
- lang: eng
text: High-throughput live-cell screens are intricate elements of systems biology
studies and drug discovery pipelines. Here, we demonstrate an optogenetics-assisted
method that avoids the need for chemical activators and reporters, reduces the
number of operational steps and increases information content in a cell-based
small-molecule screen against human protein kinases, including an orphan receptor
tyrosine kinase. This blueprint for all-optical screening can be adapted to many
drug targets and cellular processes.
acknowledgement: 'This work was supported by grants from the European Union Seventh
Framework Programme (CIG-303564 to H.J. and ERC-StG-311166 to S.M.B.N.), the Human
Frontier Science Program (RGY0084_2012 to H.J.) and the Herzfelder Foundation (to
M.G.). A.I.-P. was supported by a Ramon Areces fellowship, and E.R. by the graduate
program MolecularDrugTargets (Austrian Science Fund (FWF): W 1232) and a FemTech
fellowship (3580812 Austrian Research Promotion Agency).'
author:
- first_name: Álvaro
full_name: Inglés Prieto, Álvaro
id: 2A9DB292-F248-11E8-B48F-1D18A9856A87
last_name: Inglés Prieto
orcid: 0000-0002-5409-8571
- first_name: Eva
full_name: Gschaider-Reichhart, Eva
id: 3FEE232A-F248-11E8-B48F-1D18A9856A87
last_name: Gschaider-Reichhart
orcid: 0000-0002-7218-7738
- first_name: Markus
full_name: Muellner, Markus
last_name: Muellner
- first_name: Matthias
full_name: Nowak, Matthias
id: 30845DAA-F248-11E8-B48F-1D18A9856A87
last_name: Nowak
- first_name: Sebastian
full_name: Nijman, Sebastian
last_name: Nijman
- first_name: Michael
full_name: Grusch, Michael
last_name: Grusch
- first_name: Harald L
full_name: Janovjak, Harald L
id: 33BA6C30-F248-11E8-B48F-1D18A9856A87
last_name: Janovjak
orcid: 0000-0002-8023-9315
citation:
ama: Inglés Prieto Á, Gschaider-Reichhart E, Muellner M, et al. Light-assisted small-molecule
screening against protein kinases. Nature Chemical Biology. 2015;11(12):952-954.
doi:10.1038/nchembio.1933
apa: Inglés Prieto, Á., Gschaider-Reichhart, E., Muellner, M., Nowak, M., Nijman,
S., Grusch, M., & Janovjak, H. L. (2015). Light-assisted small-molecule screening
against protein kinases. Nature Chemical Biology. Nature Publishing Group.
https://doi.org/10.1038/nchembio.1933
chicago: Inglés Prieto, Álvaro, Eva Gschaider-Reichhart, Markus Muellner, Matthias
Nowak, Sebastian Nijman, Michael Grusch, and Harald L Janovjak. “Light-Assisted
Small-Molecule Screening against Protein Kinases.” Nature Chemical Biology.
Nature Publishing Group, 2015. https://doi.org/10.1038/nchembio.1933.
ieee: Á. Inglés Prieto et al., “Light-assisted small-molecule screening against
protein kinases,” Nature Chemical Biology, vol. 11, no. 12. Nature Publishing
Group, pp. 952–954, 2015.
ista: Inglés Prieto Á, Gschaider-Reichhart E, Muellner M, Nowak M, Nijman S, Grusch
M, Janovjak HL. 2015. Light-assisted small-molecule screening against protein
kinases. Nature Chemical Biology. 11(12), 952–954.
mla: Inglés Prieto, Álvaro, et al. “Light-Assisted Small-Molecule Screening against
Protein Kinases.” Nature Chemical Biology, vol. 11, no. 12, Nature Publishing
Group, 2015, pp. 952–54, doi:10.1038/nchembio.1933.
short: Á. Inglés Prieto, E. Gschaider-Reichhart, M. Muellner, M. Nowak, S. Nijman,
M. Grusch, H.L. Janovjak, Nature Chemical Biology 11 (2015) 952–954.
corr_author: '1'
date_created: 2018-12-11T11:53:25Z
date_published: 2015-10-12T00:00:00Z
date_updated: 2026-04-08T14:11:53Z
day: '12'
ddc:
- '571'
department:
- _id: HaJa
- _id: LifeSc
doi: 10.1038/nchembio.1933
ec_funded: 1
file:
- access_level: open_access
checksum: e9fb251dfcb7cd209b83f17867e61321
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:10:51Z
date_updated: 2020-07-14T12:45:12Z
file_id: '4842'
file_name: IST-2017-837-v1+1_ingles-prieto.pdf
file_size: 1308364
relation: main_file
file_date_updated: 2020-07-14T12:45:12Z
has_accepted_license: '1'
intvolume: ' 11'
issue: '12'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Submitted Version
page: 952 - 954
project:
- _id: 25548C20-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '303564'
name: Microbial Ion Channels for Synthetic Neurobiology
- _id: 255BFFFA-B435-11E9-9278-68D0E5697425
grant_number: RGY0084/2012
name: In situ real-time imaging of neurotransmitter signaling using designer optical
sensors
- _id: 255A6082-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: W1232-B24
name: Molecular Drug Targets
publication: Nature Chemical Biology
publication_status: published
publisher: Nature Publishing Group
publist_id: '5471'
pubrep_id: '837'
quality_controlled: '1'
related_material:
record:
- id: '418'
relation: dissertation_contains
status: public
scopus_import: 1
status: public
title: Light-assisted small-molecule screening against protein kinases
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 11
year: '2015'
...
---
_id: '1633'
abstract:
- lang: eng
text: "We present a method for simulating brittle fracture under the assumptions
of quasi-static linear elastic fracture mechanics (LEFM). Using the boundary element
method (BEM) and Lagrangian crack-fronts, we produce highly detailed fracture
surfaces. The computational cost of the BEM is alleviated by using a low-resolution
mesh and interpolating the resulting stress intensity factors when propagating
the high-resolution crack-front.\r\n\r\nOur system produces physics-based fracture
surfaces with high spatial and temporal resolution, taking spatial variation of
material toughness and/or strength into account. It also allows for crack initiation
to be handled separately from crack propagation, which is not only more reasonable
from a physics perspective, but can also be used to control the simulation.\r\n\r\nSeparating
the resolution of the crack-front from the resolution of the computational mesh
increases the efficiency and therefore the amount of visual detail on the resulting
fracture surfaces. The BEM also allows us to re-use previously computed blocks
of the system matrix."
article_number: '151'
article_processing_charge: No
author:
- first_name: David
full_name: Hahn, David
id: 357A6A66-F248-11E8-B48F-1D18A9856A87
last_name: Hahn
- first_name: Christopher J
full_name: Wojtan, Christopher J
id: 3C61F1D2-F248-11E8-B48F-1D18A9856A87
last_name: Wojtan
orcid: 0000-0001-6646-5546
citation:
ama: 'Hahn D, Wojtan C. High-resolution brittle fracture simulation with boundary
elements. In: Vol 34. ACM; 2015. doi:10.1145/2766896'
apa: 'Hahn, D., & Wojtan, C. (2015). High-resolution brittle fracture simulation
with boundary elements (Vol. 34). Presented at the SIGGRAPH: Special Interest
Group on Computer Graphics and Interactive Techniques, Los Angeles, CA, United
States: ACM. https://doi.org/10.1145/2766896'
chicago: Hahn, David, and Chris Wojtan. “High-Resolution Brittle Fracture Simulation
with Boundary Elements,” Vol. 34. ACM, 2015. https://doi.org/10.1145/2766896.
ieee: 'D. Hahn and C. Wojtan, “High-resolution brittle fracture simulation with
boundary elements,” presented at the SIGGRAPH: Special Interest Group on Computer
Graphics and Interactive Techniques, Los Angeles, CA, United States, 2015, vol.
34, no. 4.'
ista: 'Hahn D, Wojtan C. 2015. High-resolution brittle fracture simulation with
boundary elements. SIGGRAPH: Special Interest Group on Computer Graphics and Interactive
Techniques vol. 34, 151.'
mla: Hahn, David, and Chris Wojtan. High-Resolution Brittle Fracture Simulation
with Boundary Elements. Vol. 34, no. 4, 151, ACM, 2015, doi:10.1145/2766896.
short: D. Hahn, C. Wojtan, in:, ACM, 2015.
conference:
end_date: 2015-08-13
location: Los Angeles, CA, United States
name: 'SIGGRAPH: Special Interest Group on Computer Graphics and Interactive Techniques'
start_date: 2015-08-09
corr_author: '1'
date_created: 2018-12-11T11:53:09Z
date_published: 2015-07-27T00:00:00Z
date_updated: 2026-04-08T14:20:15Z
day: '27'
ddc:
- '000'
department:
- _id: ChWo
doi: 10.1145/2766896
ec_funded: 1
external_id:
isi:
- '000358786600117'
file:
- access_level: open_access
checksum: 955aee971983f6b6152bcc1c9b4a7c20
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:15:13Z
date_updated: 2020-07-14T12:45:07Z
file_id: '5131'
file_name: IST-2016-609-v1+1_FractureBEM.pdf
file_size: 20154270
relation: main_file
file_date_updated: 2020-07-14T12:45:07Z
has_accepted_license: '1'
intvolume: ' 34'
isi: 1
issue: '4'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Submitted Version
project:
- _id: 2533E772-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '638176'
name: 'Big Splash: Efficient Simulation of Natural Phenomena at Extremely Large
Scales'
publication_status: published
publisher: ACM
publist_id: '5522'
pubrep_id: '609'
quality_controlled: '1'
related_material:
record:
- id: '839'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: High-resolution brittle fracture simulation with boundary elements
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 34
year: '2015'
...
---
_id: '1591'
abstract:
- lang: eng
text: Auxin participates in a multitude of developmental processes, as well as responses
to environmental cues. Compared with other plant hormones, auxin exhibits a unique
property, as it undergoes directional, cell-to-cell transport facilitated by plasma
membrane-localized transport proteins. Among them, a prominent role has been ascribed
to the PIN family of auxin efflux facilitators. PIN proteins direct polar auxin
transport on account of their asymmetric subcellular localizations. In this review,
we provide an overview of the multiple developmental roles of PIN proteins, including
the atypical endoplasmic reticulum-localized members of the family, and look at
the family from an evolutionary perspective. Next, we cover the cell biological
and molecular aspects of PIN function, in particular the establishment of their
polar subcellular localization. Hormonal and environmental inputs into the regulation
of PIN action are summarized as well.
article_processing_charge: No
author:
- first_name: Maciek
full_name: Adamowski, Maciek
id: 45F536D2-F248-11E8-B48F-1D18A9856A87
last_name: Adamowski
orcid: 0000-0001-6463-5257
- first_name: Jirí
full_name: Friml, Jirí
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: 'Adamowski M, Friml J. PIN-dependent auxin transport: Action, regulation, and
evolution. Plant Cell. 2015;27(1):20-32. doi:10.1105/tpc.114.134874'
apa: 'Adamowski, M., & Friml, J. (2015). PIN-dependent auxin transport: Action,
regulation, and evolution. Plant Cell. American Society of Plant Biologists.
https://doi.org/10.1105/tpc.114.134874'
chicago: 'Adamowski, Maciek, and Jiří Friml. “PIN-Dependent Auxin Transport: Action,
Regulation, and Evolution.” Plant Cell. American Society of Plant Biologists,
2015. https://doi.org/10.1105/tpc.114.134874.'
ieee: 'M. Adamowski and J. Friml, “PIN-dependent auxin transport: Action, regulation,
and evolution,” Plant Cell, vol. 27, no. 1. American Society of Plant Biologists,
pp. 20–32, 2015.'
ista: 'Adamowski M, Friml J. 2015. PIN-dependent auxin transport: Action, regulation,
and evolution. Plant Cell. 27(1), 20–32.'
mla: 'Adamowski, Maciek, and Jiří Friml. “PIN-Dependent Auxin Transport: Action,
Regulation, and Evolution.” Plant Cell, vol. 27, no. 1, American Society
of Plant Biologists, 2015, pp. 20–32, doi:10.1105/tpc.114.134874.'
short: M. Adamowski, J. Friml, Plant Cell 27 (2015) 20–32.
corr_author: '1'
date_created: 2018-12-11T11:52:54Z
date_published: 2015-01-20T00:00:00Z
date_updated: 2026-04-08T14:20:44Z
day: '20'
department:
- _id: JiFr
doi: 10.1105/tpc.114.134874
external_id:
isi:
- '000350764700007'
pmid:
- '25604445'
intvolume: ' 27'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4330589/
month: '01'
oa: 1
oa_version: Submitted Version
page: 20 - 32
pmid: 1
publication: Plant Cell
publication_status: published
publisher: American Society of Plant Biologists
publist_id: '5580'
quality_controlled: '1'
related_material:
record:
- id: '938'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: 'PIN-dependent auxin transport: Action, regulation, and evolution'
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 27
year: '2015'
...
---
_id: '1607'
abstract:
- lang: eng
text: We consider the core algorithmic problems related to verification of systems
with respect to three classical quantitative properties, namely, the mean-payoff
property, the ratio property, and the minimum initial credit for energy property.
The algorithmic problem given a graph and a quantitative property asks to compute
the optimal value (the infimum value over all traces) from every node of the graph.
We consider graphs with constant treewidth, and it is well-known that the control-flow
graphs of most programs have constant treewidth. Let n denote the number of nodes
of a graph, m the number of edges (for constant treewidth graphs m=O(n)) and W
the largest absolute value of the weights. Our main theoretical results are as
follows. First, for constant treewidth graphs we present an algorithm that approximates
the mean-payoff value within a multiplicative factor of ϵ in time O(n⋅log(n/ϵ))
and linear space, as compared to the classical algorithms that require quadratic
time. Second, for the ratio property we present an algorithm that for constant
treewidth graphs works in time O(n⋅log(|a⋅b|))=O(n⋅log(n⋅W)), when the output
is ab, as compared to the previously best known algorithm with running time O(n2⋅log(n⋅W)).
Third, for the minimum initial credit problem we show that (i) for general graphs
the problem can be solved in O(n2⋅m) time and the associated decision problem
can be solved in O(n⋅m) time, improving the previous known O(n3⋅m⋅log(n⋅W)) and
O(n2⋅m) bounds, respectively; and (ii) for constant treewidth graphs we present
an algorithm that requires O(n⋅logn) time, improving the previous known O(n4⋅log(n⋅W))
bound. We have implemented some of our algorithms and show that they present a
significant speedup on standard benchmarks.
acknowledgement: 'The research was partly supported by Austrian Science Fund (FWF)
Grant No P23499- N23, FWF NFN Grant No S11407-N23 (RiSE/SHiNE), ERC Start grant
(279307: Graph Games), and Microsoft faculty fellows award.'
alternative_title:
- LNCS
article_processing_charge: No
arxiv: 1
author:
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
- first_name: Rasmus
full_name: Ibsen-Jensen, Rasmus
id: 3B699956-F248-11E8-B48F-1D18A9856A87
last_name: Ibsen-Jensen
orcid: 0000-0003-4783-0389
- first_name: Andreas
full_name: Pavlogiannis, Andreas
id: 49704004-F248-11E8-B48F-1D18A9856A87
last_name: Pavlogiannis
orcid: 0000-0002-8943-0722
citation:
ama: 'Chatterjee K, Ibsen-Jensen R, Pavlogiannis A. Faster algorithms for quantitative
verification in constant treewidth graphs. In: Vol 9206. Springer; 2015:140-157.
doi:10.1007/978-3-319-21690-4_9'
apa: 'Chatterjee, K., Ibsen-Jensen, R., & Pavlogiannis, A. (2015). Faster algorithms
for quantitative verification in constant treewidth graphs (Vol. 9206, pp. 140–157).
Presented at the CAV: Computer Aided Verification, San Francisco, CA, United States:
Springer. https://doi.org/10.1007/978-3-319-21690-4_9'
chicago: Chatterjee, Krishnendu, Rasmus Ibsen-Jensen, and Andreas Pavlogiannis.
“Faster Algorithms for Quantitative Verification in Constant Treewidth Graphs,”
9206:140–57. Springer, 2015. https://doi.org/10.1007/978-3-319-21690-4_9.
ieee: 'K. Chatterjee, R. Ibsen-Jensen, and A. Pavlogiannis, “Faster algorithms for
quantitative verification in constant treewidth graphs,” presented at the CAV:
Computer Aided Verification, San Francisco, CA, United States, 2015, vol. 9206,
pp. 140–157.'
ista: 'Chatterjee K, Ibsen-Jensen R, Pavlogiannis A. 2015. Faster algorithms for
quantitative verification in constant treewidth graphs. CAV: Computer Aided Verification,
LNCS, vol. 9206, 140–157.'
mla: Chatterjee, Krishnendu, et al. Faster Algorithms for Quantitative Verification
in Constant Treewidth Graphs. Vol. 9206, Springer, 2015, pp. 140–57, doi:10.1007/978-3-319-21690-4_9.
short: K. Chatterjee, R. Ibsen-Jensen, A. Pavlogiannis, in:, Springer, 2015, pp.
140–157.
conference:
end_date: 2015-07-24
location: San Francisco, CA, United States
name: 'CAV: Computer Aided Verification'
start_date: 2015-07-18
corr_author: '1'
date_created: 2018-12-11T11:52:59Z
date_published: 2015-07-16T00:00:00Z
date_updated: 2026-04-08T14:22:16Z
day: '16'
department:
- _id: KrCh
doi: 10.1007/978-3-319-21690-4_9
ec_funded: 1
external_id:
arxiv:
- '1504.07384'
isi:
- '000364182900009'
intvolume: ' 9206'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1504.07384
month: '07'
oa: 1
oa_version: Preprint
page: 140 - 157
project:
- _id: 2584A770-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P 23499-N23
name: Modern Graph Algorithmic Techniques in Formal Verification
- _id: 25832EC2-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: S 11407_N23
name: Rigorous Systems Engineering
- _id: 2581B60A-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '279307'
name: 'Quantitative Graph Games: Theory and Applications'
- _id: 2587B514-B435-11E9-9278-68D0E5697425
name: Microsoft Research Faculty Fellowship
publication_status: published
publisher: Springer
publist_id: '5560'
quality_controlled: '1'
related_material:
record:
- id: '5430'
relation: earlier_version
status: public
- id: '5437'
relation: earlier_version
status: public
- id: '821'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Faster algorithms for quantitative verification in constant treewidth graphs
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 9206
year: '2015'
...
---
_id: '1602'
abstract:
- lang: eng
text: Interprocedural analysis is at the heart of numerous applications in programming
languages, such as alias analysis, constant propagation, etc. Recursive state
machines (RSMs) are standard models for interprocedural analysis. We consider
a general framework with RSMs where the transitions are labeled from a semiring,
and path properties are algebraic with semiring operations. RSMs with algebraic
path properties can model interprocedural dataflow analysis problems, the shortest
path problem, the most probable path problem, etc. The traditional algorithms
for interprocedural analysis focus on path properties where the starting point
is fixed as the entry point of a specific method. In this work, we consider possible
multiple queries as required in many applications such as in alias analysis. The
study of multiple queries allows us to bring in a very important algorithmic distinction
between the resource usage of the one-time preprocessing vs for each individual
query. The second aspect that we consider is that the control flow graphs for
most programs have constant treewidth. Our main contributions are simple and implementable
algorithms that supportmultiple queries for algebraic path properties for RSMs
that have constant treewidth. Our theoretical results show that our algorithms
have small additional one-time preprocessing, but can answer subsequent queries
significantly faster as compared to the current best-known solutions for several
important problems, such as interprocedural reachability and shortest path. We
provide a prototype implementation for interprocedural reachability and intraprocedural
shortest path that gives a significant speed-up on several benchmarks.
acknowledgement: We thank anonymous reviewers for helpful comments to improve the
presentation of the paper.
arxiv: 1
author:
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
- first_name: Rasmus
full_name: Ibsen-Jensen, Rasmus
id: 3B699956-F248-11E8-B48F-1D18A9856A87
last_name: Ibsen-Jensen
orcid: 0000-0003-4783-0389
- first_name: Andreas
full_name: Pavlogiannis, Andreas
id: 49704004-F248-11E8-B48F-1D18A9856A87
last_name: Pavlogiannis
orcid: 0000-0002-8943-0722
- first_name: Prateesh
full_name: Goyal, Prateesh
last_name: Goyal
citation:
ama: Chatterjee K, Ibsen-Jensen R, Pavlogiannis A, Goyal P. Faster algorithms for
algebraic path properties in recursive state machines with constant treewidth.
ACM SIGPLAN Notices. 2015;50(1):97-109. doi:10.1145/2676726.2676979
apa: 'Chatterjee, K., Ibsen-Jensen, R., Pavlogiannis, A., & Goyal, P. (2015).
Faster algorithms for algebraic path properties in recursive state machines with
constant treewidth. ACM SIGPLAN Notices. Mumbai, India: ACM. https://doi.org/10.1145/2676726.2676979'
chicago: Chatterjee, Krishnendu, Rasmus Ibsen-Jensen, Andreas Pavlogiannis, and
Prateesh Goyal. “Faster Algorithms for Algebraic Path Properties in Recursive
State Machines with Constant Treewidth.” ACM SIGPLAN Notices. ACM, 2015.
https://doi.org/10.1145/2676726.2676979.
ieee: K. Chatterjee, R. Ibsen-Jensen, A. Pavlogiannis, and P. Goyal, “Faster algorithms
for algebraic path properties in recursive state machines with constant treewidth,”
ACM SIGPLAN Notices, vol. 50, no. 1. ACM, pp. 97–109, 2015.
ista: Chatterjee K, Ibsen-Jensen R, Pavlogiannis A, Goyal P. 2015. Faster algorithms
for algebraic path properties in recursive state machines with constant treewidth.
ACM SIGPLAN Notices. 50(1), 97–109.
mla: Chatterjee, Krishnendu, et al. “Faster Algorithms for Algebraic Path Properties
in Recursive State Machines with Constant Treewidth.” ACM SIGPLAN Notices,
vol. 50, no. 1, ACM, 2015, pp. 97–109, doi:10.1145/2676726.2676979.
short: K. Chatterjee, R. Ibsen-Jensen, A. Pavlogiannis, P. Goyal, ACM SIGPLAN Notices
50 (2015) 97–109.
conference:
end_date: 2015-01-17
location: Mumbai, India
name: 'SIGPLAN: Symposium on Principles of Programming Languages'
start_date: 2015-01-15
date_created: 2018-12-11T11:52:58Z
date_published: 2015-01-01T00:00:00Z
date_updated: 2026-04-08T14:22:16Z
day: '01'
department:
- _id: KrCh
doi: 10.1145/2676726.2676979
ec_funded: 1
external_id:
arxiv:
- '1410.7724'
intvolume: ' 50'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1410.7724
month: '01'
oa: 1
oa_version: Preprint
page: 97 - 109
project:
- _id: 25832EC2-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: S 11407_N23
name: Rigorous Systems Engineering
- _id: 2584A770-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P 23499-N23
name: Modern Graph Algorithmic Techniques in Formal Verification
- _id: 2581B60A-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '279307'
name: 'Quantitative Graph Games: Theory and Applications'
- _id: 2587B514-B435-11E9-9278-68D0E5697425
name: Microsoft Research Faculty Fellowship
publication: ACM SIGPLAN Notices
publication_status: published
publisher: ACM
publist_id: '5565'
quality_controlled: '1'
related_material:
record:
- id: '821'
relation: dissertation_contains
status: public
scopus_import: 1
status: public
title: Faster algorithms for algebraic path properties in recursive state machines
with constant treewidth
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 50
year: '2015'
...
---
_id: '1604'
abstract:
- lang: eng
text: We consider the quantitative analysis problem for interprocedural control-flow
graphs (ICFGs). The input consists of an ICFG, a positive weight function that
assigns every transition a positive integer-valued number, and a labelling of
the transitions (events) as good, bad, and neutral events. The weight function
assigns to each transition a numerical value that represents ameasure of how good
or bad an event is. The quantitative analysis problem asks whether there is a
run of the ICFG where the ratio of the sum of the numerical weights of good events
versus the sum of weights of bad events in the long-run is at least a given threshold
(or equivalently, to compute the maximal ratio among all valid paths in the ICFG).
The quantitative analysis problem for ICFGs can be solved in polynomial time,
and we present an efficient and practical algorithm for the problem. We show that
several problems relevant for static program analysis, such as estimating the
worst-case execution time of a program or the average energy consumption of a
mobile application, can be modeled in our framework. We have implemented our algorithm
as a tool in the Java Soot framework. We demonstrate the effectiveness of our
approach with two case studies. First, we show that our framework provides a sound
approach (no false positives) for the analysis of inefficiently-used containers.
Second, we show that our approach can also be used for static profiling of programs
which reasons about methods that are frequently invoked. Our experimental results
show that our tool scales to relatively large benchmarks, and discovers relevant
and useful information that can be used to optimize performance of the programs.
author:
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
- first_name: Andreas
full_name: Pavlogiannis, Andreas
id: 49704004-F248-11E8-B48F-1D18A9856A87
last_name: Pavlogiannis
orcid: 0000-0002-8943-0722
- first_name: Yaron
full_name: Velner, Yaron
last_name: Velner
citation:
ama: Chatterjee K, Pavlogiannis A, Velner Y. Quantitative interprocedural analysis.
Proceedings of the 42nd Annual ACM SIGPLAN-SIGACT . 2015;50(1):539-551.
doi:10.1145/2676726.2676968
apa: 'Chatterjee, K., Pavlogiannis, A., & Velner, Y. (2015). Quantitative interprocedural
analysis. Proceedings of the 42nd Annual ACM SIGPLAN-SIGACT . Mumbai, India:
ACM. https://doi.org/10.1145/2676726.2676968'
chicago: Chatterjee, Krishnendu, Andreas Pavlogiannis, and Yaron Velner. “Quantitative
Interprocedural Analysis.” Proceedings of the 42nd Annual ACM SIGPLAN-SIGACT
. ACM, 2015. https://doi.org/10.1145/2676726.2676968.
ieee: K. Chatterjee, A. Pavlogiannis, and Y. Velner, “Quantitative interprocedural
analysis,” Proceedings of the 42nd Annual ACM SIGPLAN-SIGACT , vol. 50,
no. 1. ACM, pp. 539–551, 2015.
ista: Chatterjee K, Pavlogiannis A, Velner Y. 2015. Quantitative interprocedural
analysis. Proceedings of the 42nd Annual ACM SIGPLAN-SIGACT . 50(1), 539–551.
mla: Chatterjee, Krishnendu, et al. “Quantitative Interprocedural Analysis.” Proceedings
of the 42nd Annual ACM SIGPLAN-SIGACT , vol. 50, no. 1, ACM, 2015, pp. 539–51,
doi:10.1145/2676726.2676968.
short: K. Chatterjee, A. Pavlogiannis, Y. Velner, Proceedings of the 42nd Annual
ACM SIGPLAN-SIGACT 50 (2015) 539–551.
conference:
end_date: 2015-01-17
location: Mumbai, India
name: 'SIGPLAN: Symposium on Principles of Programming Languages'
start_date: 2015-01-15
corr_author: '1'
date_created: 2018-12-11T11:52:59Z
date_published: 2015-01-01T00:00:00Z
date_updated: 2026-04-08T14:22:16Z
day: '01'
department:
- _id: KrCh
doi: 10.1145/2676726.2676968
ec_funded: 1
intvolume: ' 50'
issue: '1'
language:
- iso: eng
month: '01'
oa_version: None
page: 539 - 551
project:
- _id: 25832EC2-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: S 11407_N23
name: Rigorous Systems Engineering
- _id: 2584A770-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P 23499-N23
name: Modern Graph Algorithmic Techniques in Formal Verification
- _id: 2581B60A-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '279307'
name: 'Quantitative Graph Games: Theory and Applications'
- _id: 2587B514-B435-11E9-9278-68D0E5697425
name: Microsoft Research Faculty Fellowship
publication: 'Proceedings of the 42nd Annual ACM SIGPLAN-SIGACT '
publication_identifier:
isbn:
- 978-1-4503-3300-9
publication_status: published
publisher: ACM
publist_id: '5563'
pubrep_id: '523'
quality_controlled: '1'
related_material:
record:
- id: '5445'
relation: earlier_version
status: public
- id: '821'
relation: dissertation_contains
status: public
scopus_import: 1
status: public
title: Quantitative interprocedural analysis
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 50
year: '2015'
...
---
_id: '1714'
abstract:
- lang: eng
text: 'We present a flexible framework for the automated competitive analysis of
on-line scheduling algorithms for firm-deadline real-time tasks based on multi-objective
graphs: Given a task set and an on-line scheduling algorithm specified as a labeled
transition system, along with some optional safety, liveness, and/or limit-average
constraints for the adversary, we automatically compute the competitive ratio
of the algorithm w.r.t. A clairvoyant scheduler. We demonstrate the flexibility
and power of our approach by comparing the competitive ratio of several on-line
algorithms, including Dover, that have been proposed in the past, for various
task sets. Our experimental results reveal that none of these algorithms is universally
optimal, in the sense that there are task sets where other schedulers provide
better performance. Our framework is hence a very useful design tool for selecting
optimal algorithms for a given application.'
article_processing_charge: No
author:
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
- first_name: Andreas
full_name: Pavlogiannis, Andreas
id: 49704004-F248-11E8-B48F-1D18A9856A87
last_name: Pavlogiannis
orcid: 0000-0002-8943-0722
- first_name: Alexander
full_name: Kößler, Alexander
last_name: Kößler
- first_name: Ulrich
full_name: Schmid, Ulrich
last_name: Schmid
citation:
ama: 'Chatterjee K, Pavlogiannis A, Kößler A, Schmid U. A framework for automated
competitive analysis of on-line scheduling of firm-deadline tasks. In: Real-Time
Systems Symposium. Vol 2015. IEEE; 2015:118-127. doi:10.1109/RTSS.2014.9'
apa: 'Chatterjee, K., Pavlogiannis, A., Kößler, A., & Schmid, U. (2015). A framework
for automated competitive analysis of on-line scheduling of firm-deadline tasks.
In Real-Time Systems Symposium (Vol. 2015, pp. 118–127). Rome, Italy: IEEE.
https://doi.org/10.1109/RTSS.2014.9'
chicago: Chatterjee, Krishnendu, Andreas Pavlogiannis, Alexander Kößler, and Ulrich
Schmid. “A Framework for Automated Competitive Analysis of On-Line Scheduling
of Firm-Deadline Tasks.” In Real-Time Systems Symposium, 2015:118–27. IEEE,
2015. https://doi.org/10.1109/RTSS.2014.9.
ieee: K. Chatterjee, A. Pavlogiannis, A. Kößler, and U. Schmid, “A framework for
automated competitive analysis of on-line scheduling of firm-deadline tasks,”
in Real-Time Systems Symposium, Rome, Italy, 2015, vol. 2015, no. January,
pp. 118–127.
ista: 'Chatterjee K, Pavlogiannis A, Kößler A, Schmid U. 2015. A framework for automated
competitive analysis of on-line scheduling of firm-deadline tasks. Real-Time Systems
Symposium. RTSS: Real-Time Systems Symposium vol. 2015, 118–127.'
mla: Chatterjee, Krishnendu, et al. “A Framework for Automated Competitive Analysis
of On-Line Scheduling of Firm-Deadline Tasks.” Real-Time Systems Symposium,
vol. 2015, no. January, IEEE, 2015, pp. 118–27, doi:10.1109/RTSS.2014.9.
short: K. Chatterjee, A. Pavlogiannis, A. Kößler, U. Schmid, in:, Real-Time Systems
Symposium, IEEE, 2015, pp. 118–127.
conference:
end_date: 2014-12-05
location: Rome, Italy
name: 'RTSS: Real-Time Systems Symposium'
start_date: 2014-12-02
date_created: 2018-12-11T11:53:37Z
date_published: 2015-01-15T00:00:00Z
date_updated: 2026-04-08T14:22:16Z
day: '15'
department:
- _id: KrCh
doi: 10.1109/RTSS.2014.9
external_id:
isi:
- '000569750000012'
intvolume: ' 2015'
isi: 1
issue: January
language:
- iso: eng
month: '01'
oa_version: None
page: 118 - 127
publication: Real-Time Systems Symposium
publication_status: published
publisher: IEEE
publist_id: '5417'
quality_controlled: '1'
related_material:
record:
- id: '5423'
relation: earlier_version
status: public
- id: '821'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: A framework for automated competitive analysis of on-line scheduling of firm-deadline
tasks
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 2015
year: '2015'
...
---
_id: '1537'
abstract:
- lang: eng
text: 3D amoeboid cell migration is central to many developmental and disease-related
processes such as cancer metastasis. Here, we identify a unique prototypic amoeboid
cell migration mode in early zebrafish embryos, termed stable-bleb migration.
Stable-bleb cells display an invariant polarized balloon-like shape with exceptional
migration speed and persistence. Progenitor cells can be reversibly transformed
into stable-bleb cells irrespective of their primary fate and motile characteristics
by increasing myosin II activity through biochemical or mechanical stimuli. Using
a combination of theory and experiments, we show that, in stable-bleb cells, cortical
contractility fluctuations trigger a stochastic switch into amoeboid motility,
and a positive feedback between cortical flows and gradients in contractility
maintains stable-bleb cell polarization. We further show that rearward cortical
flows drive stable-bleb cell migration in various adhesive and non-adhesive environments,
unraveling a highly versatile amoeboid migration phenotype.
acknowledged_ssus:
- _id: SSU
acknowledgement: 'We would like to thank R. Hausschild and E. Papusheva for technical
assistance and the service facilities at the IST Austria for continuous support.
The caRhoA plasmid was a kind gift of T. Kudoh and A. Takesono. We thank M. Piel
and E. Paluch for exchanging unpublished data. '
article_processing_charge: No
author:
- first_name: Verena
full_name: Ruprecht, Verena
id: 4D71A03A-F248-11E8-B48F-1D18A9856A87
last_name: Ruprecht
orcid: 0000-0003-4088-8633
- first_name: Stefan
full_name: Wieser, Stefan
id: 355AA5A0-F248-11E8-B48F-1D18A9856A87
last_name: Wieser
orcid: 0000-0002-2670-2217
- first_name: Andrew
full_name: Callan Jones, Andrew
last_name: Callan Jones
- first_name: Michael
full_name: Smutny, Michael
id: 3FE6E4E8-F248-11E8-B48F-1D18A9856A87
last_name: Smutny
orcid: 0000-0002-5920-9090
- first_name: Hitoshi
full_name: Morita, Hitoshi
id: 4C6E54C6-F248-11E8-B48F-1D18A9856A87
last_name: Morita
- first_name: Keisuke
full_name: Sako, Keisuke
id: 3BED66BE-F248-11E8-B48F-1D18A9856A87
last_name: Sako
orcid: 0000-0002-6453-8075
- first_name: Vanessa
full_name: Barone, Vanessa
id: 419EECCC-F248-11E8-B48F-1D18A9856A87
last_name: Barone
orcid: 0000-0003-2676-3367
- first_name: Monika
full_name: Ritsch Marte, Monika
last_name: Ritsch Marte
- first_name: Michael K
full_name: Sixt, Michael K
id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87
last_name: Sixt
orcid: 0000-0002-6620-9179
- first_name: Raphaël
full_name: Voituriez, Raphaël
last_name: Voituriez
- first_name: Carl-Philipp J
full_name: Heisenberg, Carl-Philipp J
id: 39427864-F248-11E8-B48F-1D18A9856A87
last_name: Heisenberg
orcid: 0000-0002-0912-4566
citation:
ama: Ruprecht V, Wieser S, Callan Jones A, et al. Cortical contractility triggers
a stochastic switch to fast amoeboid cell motility. Cell. 2015;160(4):673-685.
doi:10.1016/j.cell.2015.01.008
apa: Ruprecht, V., Wieser, S., Callan Jones, A., Smutny, M., Morita, H., Sako, K.,
… Heisenberg, C.-P. J. (2015). Cortical contractility triggers a stochastic switch
to fast amoeboid cell motility. Cell. Cell Press. https://doi.org/10.1016/j.cell.2015.01.008
chicago: Ruprecht, Verena, Stefan Wieser, Andrew Callan Jones, Michael Smutny, Hitoshi
Morita, Keisuke Sako, Vanessa Barone, et al. “Cortical Contractility Triggers
a Stochastic Switch to Fast Amoeboid Cell Motility.” Cell. Cell Press,
2015. https://doi.org/10.1016/j.cell.2015.01.008.
ieee: V. Ruprecht et al., “Cortical contractility triggers a stochastic switch
to fast amoeboid cell motility,” Cell, vol. 160, no. 4. Cell Press, pp.
673–685, 2015.
ista: Ruprecht V, Wieser S, Callan Jones A, Smutny M, Morita H, Sako K, Barone V,
Ritsch Marte M, Sixt MK, Voituriez R, Heisenberg C-PJ. 2015. Cortical contractility
triggers a stochastic switch to fast amoeboid cell motility. Cell. 160(4), 673–685.
mla: Ruprecht, Verena, et al. “Cortical Contractility Triggers a Stochastic Switch
to Fast Amoeboid Cell Motility.” Cell, vol. 160, no. 4, Cell Press, 2015,
pp. 673–85, doi:10.1016/j.cell.2015.01.008.
short: V. Ruprecht, S. Wieser, A. Callan Jones, M. Smutny, H. Morita, K. Sako, V.
Barone, M. Ritsch Marte, M.K. Sixt, R. Voituriez, C.-P.J. Heisenberg, Cell 160
(2015) 673–685.
corr_author: '1'
date_created: 2018-12-11T11:52:35Z
date_published: 2015-02-12T00:00:00Z
date_updated: 2026-04-08T14:22:39Z
day: '12'
ddc:
- '570'
department:
- _id: CaHe
- _id: MiSi
doi: 10.1016/j.cell.2015.01.008
external_id:
isi:
- '000349208800011'
file:
- access_level: open_access
checksum: 228d3edf40627d897b3875088a0ac51f
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:13:21Z
date_updated: 2020-07-14T12:45:01Z
file_id: '5003'
file_name: IST-2016-484-v1+1_1-s2.0-S0092867415000094-main.pdf
file_size: 4362653
relation: main_file
file_date_updated: 2020-07-14T12:45:01Z
has_accepted_license: '1'
intvolume: ' 160'
isi: 1
issue: '4'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '02'
oa: 1
oa_version: Published Version
page: 673 - 685
project:
- _id: 2529486C-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: T 560-B17
name: Cell- and Tissue Mechanics in Zebrafish Germ Layer Formation
- _id: 2527D5CC-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I812-B12
name: Cell Cortex and Germ Layer Formation in Zebrafish Gastrulation
publication: Cell
publication_status: published
publisher: Cell Press
publist_id: '5634'
pubrep_id: '484'
quality_controlled: '1'
related_material:
record:
- id: '961'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Cortical contractility triggers a stochastic switch to fast amoeboid cell motility
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 160
year: '2015'
...