---
_id: '3261'
abstract:
- lang: eng
text: Cells in a developing embryo have no direct way of "measuring" their
physical position. Through a variety of processes, however, the expression levels
of multiple genes come to be correlated with position, and these expression levels
thus form a code for "positional information." We show how to measure
this information, in bits, using the gap genes in the Drosophila embryo as an
example. Individual genes carry nearly two bits of information, twice as much
as expected if the expression patterns consisted only of on/off domains separated
by sharp boundaries. Taken together, four gap genes carry enough information to
define a cell's location with an error bar of ~1% along the anterior-posterior
axis of the embryo. This precision is nearly enough for each cell to have a unique
identity, which is the maximum information the system can use, and is nearly constant
along the length of the embryo. We argue that this constancy is a signature of
optimality in the transmission of information from primary morphogen inputs to
the output of the gap gene network.
article_processing_charge: No
author:
- first_name: Julien
full_name: Dubuis, Julien
last_name: Dubuis
- first_name: Gasper
full_name: Tkacik, Gasper
id: 3D494DCA-F248-11E8-B48F-1D18A9856A87
last_name: Tkacik
orcid: 0000-0002-6699-1455
- first_name: Eric
full_name: Wieschaus, Eric
last_name: Wieschaus
- first_name: Thomas
full_name: Gregor, Thomas
last_name: Gregor
- first_name: William
full_name: Bialek, William
last_name: Bialek
citation:
ama: Dubuis J, Tkačik G, Wieschaus E, Gregor T, Bialek W. Positional information,
in bits. PNAS. 2013;110(41):16301-16308. doi:10.1073/pnas.1315642110
apa: Dubuis, J., Tkačik, G., Wieschaus, E., Gregor, T., & Bialek, W. (2013).
Positional information, in bits. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.1315642110
chicago: Dubuis, Julien, Gašper Tkačik, Eric Wieschaus, Thomas Gregor, and William
Bialek. “Positional Information, in Bits.” PNAS. National Academy of Sciences,
2013. https://doi.org/10.1073/pnas.1315642110.
ieee: J. Dubuis, G. Tkačik, E. Wieschaus, T. Gregor, and W. Bialek, “Positional
information, in bits,” PNAS, vol. 110, no. 41. National Academy of Sciences,
pp. 16301–16308, 2013.
ista: Dubuis J, Tkačik G, Wieschaus E, Gregor T, Bialek W. 2013. Positional information,
in bits. PNAS. 110(41), 16301–16308.
mla: Dubuis, Julien, et al. “Positional Information, in Bits.” PNAS, vol.
110, no. 41, National Academy of Sciences, 2013, pp. 16301–08, doi:10.1073/pnas.1315642110.
short: J. Dubuis, G. Tkačik, E. Wieschaus, T. Gregor, W. Bialek, PNAS 110 (2013)
16301–16308.
date_created: 2018-12-11T12:02:19Z
date_published: 2013-10-08T00:00:00Z
date_updated: 2025-09-29T13:24:21Z
day: '08'
ddc:
- '570'
department:
- _id: GaTk
doi: 10.1073/pnas.1315642110
external_id:
isi:
- '000325395600021'
pmid:
- '24089448'
file:
- access_level: open_access
checksum: ecd859fe52a562193027d428b5524a8d
content_type: application/pdf
creator: dernst
date_created: 2019-01-22T13:53:23Z
date_updated: 2020-07-14T12:46:06Z
file_id: '5873'
file_name: 2013_PNAS_Dubuis.pdf
file_size: 1670548
relation: main_file
file_date_updated: 2020-07-14T12:46:06Z
fulldoi: https://doi.org/10.1073/pnas.1315642110
has_accepted_license: '1'
intvolume: ' 110'
isi: 1
issue: '41'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: 16301 - 16308
pmid: 1
publication: PNAS
publication_status: published
publisher: National Academy of Sciences
publist_id: '3387'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Positional information, in bits
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 110
year: '2013'
...
---
_id: '331'
abstract:
- lang: eng
text: We report a procedure to prepare highly monodisperse copper telluride nanocubes,
nanoplates, and nanorods. The procedure is based on the reaction of a copper salt
with trioctylphosphine telluride in the presence of lithium bis(trimethylsilyl)amide
and oleylamine. CuTe nanocrystals display a strong near-infrared optical absorption
associated with localized surface plasmon resonances. We exploit this plasmon
resonance for the design of surface-enhanced Raman scattering sensors for unconventional
optical probes. Furthermore, we also report here our preliminary analysis of the
use of CuTe nanocrystals as cytotoxic and photothermal agents.
article_processing_charge: No
article_type: original
author:
- first_name: Wenhua
full_name: Li, Wenhua
last_name: Li
- first_name: Reza
full_name: Zamani, Reza
last_name: Zamani
- first_name: Pilar
full_name: Rivera Gil, Pilar
last_name: Rivera Gil
- first_name: Beatriz
full_name: Pelaz, Beatriz
last_name: Pelaz
- first_name: Maria
full_name: Ibáñez, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibáñez
orcid: 0000-0001-5013-2843
- first_name: Doris
full_name: Cadavid, Doris
last_name: Cadavid
- first_name: Alexey
full_name: Shavel, Alexey
last_name: Shavel
- first_name: Ramon
full_name: Alvarez Puebla, Ramon
last_name: Alvarez Puebla
- first_name: Wolfgang
full_name: Parak, Wolfgang
last_name: Parak
- first_name: Jordi
full_name: Arbiol, Jordi
last_name: Arbiol
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
citation:
ama: 'Li W, Zamani R, Rivera Gil P, et al. CuTe nanocrystals: Shape and size control,
plasmonic properties, and use as SERS probes and photothermal agents. Journal
of the American Chemical Society. 2013;135(19):7098-7101. doi:10.1021/ja401428e'
apa: 'Li, W., Zamani, R., Rivera Gil, P., Pelaz, B., Ibáñez, M., Cadavid, D., …
Cabot, A. (2013). CuTe nanocrystals: Shape and size control, plasmonic properties,
and use as SERS probes and photothermal agents. Journal of the American Chemical
Society. ACS. https://doi.org/10.1021/ja401428e'
chicago: 'Li, Wenhua, Reza Zamani, Pilar Rivera Gil, Beatriz Pelaz, Maria Ibáñez,
Doris Cadavid, Alexey Shavel, et al. “CuTe Nanocrystals: Shape and Size Control,
Plasmonic Properties, and Use as SERS Probes and Photothermal Agents.” Journal
of the American Chemical Society. ACS, 2013. https://doi.org/10.1021/ja401428e.'
ieee: 'W. Li et al., “CuTe nanocrystals: Shape and size control, plasmonic
properties, and use as SERS probes and photothermal agents,” Journal of the
American Chemical Society, vol. 135, no. 19. ACS, pp. 7098–7101, 2013.'
ista: 'Li W, Zamani R, Rivera Gil P, Pelaz B, Ibáñez M, Cadavid D, Shavel A, Alvarez
Puebla R, Parak W, Arbiol J, Cabot A. 2013. CuTe nanocrystals: Shape and size
control, plasmonic properties, and use as SERS probes and photothermal agents.
Journal of the American Chemical Society. 135(19), 7098–7101.'
mla: 'Li, Wenhua, et al. “CuTe Nanocrystals: Shape and Size Control, Plasmonic Properties,
and Use as SERS Probes and Photothermal Agents.” Journal of the American Chemical
Society, vol. 135, no. 19, ACS, 2013, pp. 7098–101, doi:10.1021/ja401428e.'
short: W. Li, R. Zamani, P. Rivera Gil, B. Pelaz, M. Ibáñez, D. Cadavid, A. Shavel,
R. Alvarez Puebla, W. Parak, J. Arbiol, A. Cabot, Journal of the American Chemical
Society 135 (2013) 7098–7101.
date_created: 2018-12-11T11:45:51Z
date_published: 2013-04-30T00:00:00Z
date_updated: 2021-01-12T07:42:33Z
day: '30'
doi: 10.1021/ja401428e
extern: '1'
fulldoi: https://doi.org/10.1021/ja401428e
intvolume: ' 135'
issue: '19'
language:
- iso: eng
month: '04'
oa_version: None
page: 7098 - 7101
publication: Journal of the American Chemical Society
publication_status: published
publisher: ACS
publist_id: '7521'
quality_controlled: '1'
status: public
title: 'CuTe nanocrystals: Shape and size control, plasmonic properties, and use as
SERS probes and photothermal agents'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 135
year: '2013'
...
---
_id: '3321'
author:
- first_name: Novi
full_name: Quadrianto, Novi
last_name: Quadrianto
- first_name: Christoph
full_name: Lampert, Christoph
id: 40C20FD2-F248-11E8-B48F-1D18A9856A87
last_name: Lampert
orcid: 0000-0001-8622-7887
citation:
ama: 'Quadrianto N, Lampert C. Kernel based learning. In: Dubitzky W, Wolkenhauer
O, Cho K, Yokota H, eds. Encyclopedia of Systems Biology. Vol 3. Springer;
2013:1069-1069. doi:10.1007/978-1-4419-9863-7_604'
apa: Quadrianto, N., & Lampert, C. (2013). Kernel based learning. In W. Dubitzky,
O. Wolkenhauer, K. Cho, & H. Yokota (Eds.), Encyclopedia of Systems Biology
(Vol. 3, pp. 1069–1069). Springer. https://doi.org/10.1007/978-1-4419-9863-7_604
chicago: Quadrianto, Novi, and Christoph Lampert. “Kernel Based Learning.” In Encyclopedia
of Systems Biology, edited by Werner Dubitzky, Olaf Wolkenhauer, Kwang Cho,
and Hiroki Yokota, 3:1069–1069. Springer, 2013. https://doi.org/10.1007/978-1-4419-9863-7_604.
ieee: N. Quadrianto and C. Lampert, “Kernel based learning,” in Encyclopedia
of Systems Biology, vol. 3, W. Dubitzky, O. Wolkenhauer, K. Cho, and H. Yokota,
Eds. Springer, 2013, pp. 1069–1069.
ista: 'Quadrianto N, Lampert C. 2013.Kernel based learning. In: Encyclopedia of
Systems Biology. vol. 3, 1069–1069.'
mla: Quadrianto, Novi, and Christoph Lampert. “Kernel Based Learning.” Encyclopedia
of Systems Biology, edited by Werner Dubitzky et al., vol. 3, Springer, 2013,
pp. 1069–1069, doi:10.1007/978-1-4419-9863-7_604.
short: N. Quadrianto, C. Lampert, in:, W. Dubitzky, O. Wolkenhauer, K. Cho, H. Yokota
(Eds.), Encyclopedia of Systems Biology, Springer, 2013, pp. 1069–1069.
date_created: 2018-12-11T12:02:39Z
date_published: 2013-01-01T00:00:00Z
date_updated: 2021-01-12T07:42:38Z
day: '01'
department:
- _id: ChLa
doi: 10.1007/978-1-4419-9863-7_604
editor:
- first_name: Werner
full_name: Dubitzky, Werner
last_name: Dubitzky
- first_name: Olaf
full_name: Wolkenhauer, Olaf
last_name: Wolkenhauer
- first_name: Kwang
full_name: Cho, Kwang
last_name: Cho
- first_name: Hiroki
full_name: Yokota, Hiroki
last_name: Yokota
fulldoi: https://doi.org/10.1007/978-1-4419-9863-7_604
intvolume: ' 3'
language:
- iso: eng
month: '01'
oa_version: None
page: 1069 - 1069
publication: Encyclopedia of Systems Biology
publication_status: published
publisher: Springer
publist_id: '3314'
quality_controlled: '1'
status: public
title: Kernel based learning
type: encyclopedia_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 3
year: '2013'
...
---
_id: '342'
abstract:
- lang: eng
text: Morphology is a key parameter in the design of novel nanocrystals and nanomaterials
with controlled functional properties. Here, we demonstrate the potential of foreign
metal ions to tune the morphology of colloidal semiconductor nanoparticles. We
illustrate the underlying mechanism by preparing copper selenide nanocubes in
the presence of Al ions. We further characterize the plasmonic properties of the
obtained nanocrystals and demonstrate their potential as a platform to produce
cubic nanoparticles with different composition by cation exchange. © 2013 American
Chemical Society.
acknowledgement: The research was supported by the European Regional Development Funds.
M.I. thanks the Spanish MICINN for her Ph.D. grant. J.A. and R.Z. also acknowledge
MAT2010-15138.
article_processing_charge: No
article_type: original
author:
- first_name: Wenhua
full_name: Li, Wenhua
last_name: Li
- first_name: Reza
full_name: Zamani, Reza
last_name: Zamani
- first_name: Maria
full_name: Ibáñez, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibáñez
orcid: 0000-0001-5013-2843
- first_name: Doris
full_name: Cadavid, Doris
last_name: Cadavid
- first_name: Alexey
full_name: Shavel, Alexey
last_name: Shavel
- first_name: Joan
full_name: Morante, Joan
last_name: Morante
- first_name: Jordi
full_name: Arbiol, Jordi
last_name: Arbiol
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
citation:
ama: 'Li W, Zamani R, Ibáñez M, et al. Metal ions to control the morphology of semiconductor
nanoparticles: Copper selenide nanocubes. Journal of the American Chemical
Society. 2013;135(12):4664-4667. doi:10.1021/ja400472m'
apa: 'Li, W., Zamani, R., Ibáñez, M., Cadavid, D., Shavel, A., Morante, J., … Cabot,
A. (2013). Metal ions to control the morphology of semiconductor nanoparticles:
Copper selenide nanocubes. Journal of the American Chemical Society. American
Chemical Society. https://doi.org/10.1021/ja400472m'
chicago: 'Li, Wenhua, Reza Zamani, Maria Ibáñez, Doris Cadavid, Alexey Shavel, Joan
Morante, Jordi Arbiol, and Andreu Cabot. “Metal Ions to Control the Morphology
of Semiconductor Nanoparticles: Copper Selenide Nanocubes.” Journal of the
American Chemical Society. American Chemical Society, 2013. https://doi.org/10.1021/ja400472m.'
ieee: 'W. Li et al., “Metal ions to control the morphology of semiconductor
nanoparticles: Copper selenide nanocubes,” Journal of the American Chemical
Society, vol. 135, no. 12. American Chemical Society, pp. 4664–4667, 2013.'
ista: 'Li W, Zamani R, Ibáñez M, Cadavid D, Shavel A, Morante J, Arbiol J, Cabot
A. 2013. Metal ions to control the morphology of semiconductor nanoparticles:
Copper selenide nanocubes. Journal of the American Chemical Society. 135(12),
4664–4667.'
mla: 'Li, Wenhua, et al. “Metal Ions to Control the Morphology of Semiconductor
Nanoparticles: Copper Selenide Nanocubes.” Journal of the American Chemical
Society, vol. 135, no. 12, American Chemical Society, 2013, pp. 4664–67, doi:10.1021/ja400472m.'
short: W. Li, R. Zamani, M. Ibáñez, D. Cadavid, A. Shavel, J. Morante, J. Arbiol,
A. Cabot, Journal of the American Chemical Society 135 (2013) 4664–4667.
date_created: 2018-12-11T11:45:55Z
date_published: 2013-03-07T00:00:00Z
date_updated: 2021-01-12T07:43:21Z
day: '07'
doi: 10.1021/ja400472m
extern: '1'
fulldoi: https://doi.org/10.1021/ja400472m
intvolume: ' 135'
issue: '12'
language:
- iso: eng
month: '03'
oa_version: None
page: 4664 - 4667
publication: Journal of the American Chemical Society
publication_status: published
publisher: American Chemical Society
publist_id: '7482'
quality_controlled: '1'
status: public
title: 'Metal ions to control the morphology of semiconductor nanoparticles: Copper
selenide nanocubes'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 135
year: '2013'
...
---
_id: '343'
abstract:
- lang: eng
text: The bottom-up assembly of nanocrystals provides access to a three-dimensional
composition control at the nanoscale not attainable by any other technology. In
particular, colloidal nanoheterostructures, with intrinsic multiphase organization,
are especially appealing building blocks for the bottom-up production of nanocomposites.
In the present work, we use PbTe-PbS as the model material system and thermoelectricity
as the paradigmatic application to investigate the potential of the bottom-up
assembly of core-shell nanoparticles to produce functional nanocomposites. With
this goal in mind, a rapid, high-yield and scalable colloidal synthetic route
to prepare grams of PbTe@PbS core-shell nanoparticles with unprecedented narrow
size distributions and exceptional composition control is detailed. PbTe@PbS nanoparticles
were used as building blocks for the bottom-up production of PbTe-PbS nanocomposites
with tuned composition. In such PbTe-PbS nanocomposites, synergistic nanocrystal
doping effects result in up to 10-fold higher electrical conductivities than in
pure PbTe and PbS nanomaterials. At the same time, the acoustic impedance mismatch
between PbTe and PbS phases and a partial phase alloying provide PbTe-PbS nanocomposites
with strongly reduced thermal conductivities. As a result, record thermoelectric
figures of merit (ZT) of ∼1.1 were obtained from undoped PbTe and PbS phases at
710 K. These high ZT values prove the potential of the proposed processes to produce
efficient functional nanomaterials with programmable properties. © 2013 American
Chemical Society.
acknowledgement: "The research was supported by the European Regional Development
Funds (ERDF, “FEDER Programa Competitivitat de Catalunya 2007-2013”) and the Spanish
MICINN Projects MAT2008-05779, MAT2010-15138, CSD2009-00050, and CSD2009-00013.
M.I. thanks the Spanish MICINN for her Ph.D. grant. J.A. and R.Z. also acknowledge
Generalitat de Catalunya 2009-SGR-770 and XaRMAE.\r\n\r\nThe authors declare no
competing financial interest."
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: Reza
full_name: Zamani, Reza
last_name: Zamani
- first_name: Stéphane
full_name: Gorsse, Stéphane
last_name: Gorsse
- first_name: Jiandong
full_name: Fan, Jiandong
last_name: Fan
- first_name: Silvia
full_name: Ortega, Silvia
last_name: Ortega
- first_name: Doris
full_name: Cadavid, Doris
last_name: Cadavid
- first_name: Joan
full_name: Morante, Joan
last_name: Morante
- first_name: Jordi
full_name: Arbiol, Jordi
last_name: Arbiol
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
citation:
ama: 'Ibáñez M, Zamani R, Gorsse S, et al. Core shell nanoparticles as building
blocks for the bottom-up production of functional nanocomposites: PbTe PbS thermoelectric
properties. ACS Nano. 2013;7(3):2573-2586. doi:10.1021/nn305971v'
apa: 'Ibáñez, M., Zamani, R., Gorsse, S., Fan, J., Ortega, S., Cadavid, D., … Cabot,
A. (2013). Core shell nanoparticles as building blocks for the bottom-up production
of functional nanocomposites: PbTe PbS thermoelectric properties. ACS Nano.
American Chemical Society. https://doi.org/10.1021/nn305971v'
chicago: 'Ibáñez, Maria, Reza Zamani, Stéphane Gorsse, Jiandong Fan, Silvia Ortega,
Doris Cadavid, Joan Morante, Jordi Arbiol, and Andreu Cabot. “Core Shell Nanoparticles
as Building Blocks for the Bottom-up Production of Functional Nanocomposites:
PbTe PbS Thermoelectric Properties.” ACS Nano. American Chemical Society,
2013. https://doi.org/10.1021/nn305971v.'
ieee: 'M. Ibáñez et al., “Core shell nanoparticles as building blocks for
the bottom-up production of functional nanocomposites: PbTe PbS thermoelectric
properties,” ACS Nano, vol. 7, no. 3. American Chemical Society, pp. 2573–2586,
2013.'
ista: 'Ibáñez M, Zamani R, Gorsse S, Fan J, Ortega S, Cadavid D, Morante J, Arbiol
J, Cabot A. 2013. Core shell nanoparticles as building blocks for the bottom-up
production of functional nanocomposites: PbTe PbS thermoelectric properties. ACS
Nano. 7(3), 2573–2586.'
mla: 'Ibáñez, Maria, et al. “Core Shell Nanoparticles as Building Blocks for the
Bottom-up Production of Functional Nanocomposites: PbTe PbS Thermoelectric Properties.”
ACS Nano, vol. 7, no. 3, American Chemical Society, 2013, pp. 2573–86,
doi:10.1021/nn305971v.'
short: M. Ibáñez, R. Zamani, S. Gorsse, J. Fan, S. Ortega, D. Cadavid, J. Morante,
J. Arbiol, A. Cabot, ACS Nano 7 (2013) 2573–2586.
date_created: 2018-12-11T11:45:55Z
date_published: 2013-02-28T00:00:00Z
date_updated: 2021-01-12T07:43:25Z
day: '28'
doi: 10.1021/nn305971v
extern: '1'
fulldoi: https://doi.org/10.1021/nn305971v
intvolume: ' 7'
issue: '3'
language:
- iso: eng
month: '02'
oa_version: None
page: 2573 - 2586
publication: ACS Nano
publication_status: published
publisher: American Chemical Society
publist_id: '7483'
quality_controlled: '1'
status: public
title: 'Core shell nanoparticles as building blocks for the bottom-up production of
functional nanocomposites: PbTe PbS thermoelectric properties'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 7
year: '2013'
...
---
_id: '344'
abstract:
- lang: eng
text: Copper-based selenides are attracting increasing interest due to their outstanding
optoelectronic and thermoelectric properties. Herein a novel colloidal synthetic
route to prepare Cu2SnSe3 nanocrystals with controlled size, shape and composition
is presented. The high yield of the developed procedure allowed its up-scaling
to the production of grams of colloidal Cu2SnSe3 nanocrystals. These nanocrystals
were used as building blocks for the production of Cu2SnSe3 bulk nanostructured
materials by spark plasma sintering. The thermoelectric properties of the prepared
nanocrystalline Cu2SnSe3 pellets were characterized in the temperature range from
300 to 720 K. The obtained results show the bottom-up production of nanocrystalline
materials from solution-processed nanocrystals to be a potentially advantageous
alternative to conventional methods of production of efficient thermoelectric
materials.
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: Doris
full_name: Cadavid, Doris
last_name: Cadavid
- first_name: Umberto
full_name: Anselmi Tamburini, Umberto
last_name: Anselmi Tamburini
- first_name: Reza
full_name: Zamani, Reza
last_name: Zamani
- first_name: Stéphane
full_name: Gorsse, Stéphane
last_name: Gorsse
- first_name: Wenhua
full_name: Li, Wenhua
last_name: Li
- first_name: Antonio
full_name: López, Antonio
last_name: López
- first_name: Joan
full_name: Morante, Joan
last_name: Morante
- first_name: Jordi
full_name: Arbiol, Jordi
last_name: Arbiol
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
citation:
ama: Ibáñez M, Cadavid D, Anselmi Tamburini U, et al. Colloidal synthesis and thermoelectric
properties of Cu 2SnSe3 nanocrystals. Journal of Materials Chemistry A.
2013;1(4):1421-1426. doi:10.1039/C2TA00419D
apa: Ibáñez, M., Cadavid, D., Anselmi Tamburini, U., Zamani, R., Gorsse, S., Li,
W., … Cabot, A. (2013). Colloidal synthesis and thermoelectric properties of Cu
2SnSe3 nanocrystals. Journal of Materials Chemistry A. Royal Society of
Chemistry. https://doi.org/10.1039/C2TA00419D
chicago: Ibáñez, Maria, Doris Cadavid, Umberto Anselmi Tamburini, Reza Zamani, Stéphane
Gorsse, Wenhua Li, Antonio López, Joan Morante, Jordi Arbiol, and Andreu Cabot.
“Colloidal Synthesis and Thermoelectric Properties of Cu 2SnSe3 Nanocrystals.”
Journal of Materials Chemistry A. Royal Society of Chemistry, 2013. https://doi.org/10.1039/C2TA00419D.
ieee: M. Ibáñez et al., “Colloidal synthesis and thermoelectric properties
of Cu 2SnSe3 nanocrystals,” Journal of Materials Chemistry A, vol. 1, no.
4. Royal Society of Chemistry, pp. 1421–1426, 2013.
ista: Ibáñez M, Cadavid D, Anselmi Tamburini U, Zamani R, Gorsse S, Li W, López
A, Morante J, Arbiol J, Cabot A. 2013. Colloidal synthesis and thermoelectric
properties of Cu 2SnSe3 nanocrystals. Journal of Materials Chemistry A. 1(4),
1421–1426.
mla: Ibáñez, Maria, et al. “Colloidal Synthesis and Thermoelectric Properties of
Cu 2SnSe3 Nanocrystals.” Journal of Materials Chemistry A, vol. 1, no.
4, Royal Society of Chemistry, 2013, pp. 1421–26, doi:10.1039/C2TA00419D.
short: M. Ibáñez, D. Cadavid, U. Anselmi Tamburini, R. Zamani, S. Gorsse, W. Li,
A. López, J. Morante, J. Arbiol, A. Cabot, Journal of Materials Chemistry A 1
(2013) 1421–1426.
date_created: 2018-12-11T11:45:56Z
date_published: 2013-01-28T00:00:00Z
date_updated: 2021-01-12T07:43:28Z
day: '28'
doi: 10.1039/C2TA00419D
extern: '1'
fulldoi: https://doi.org/10.1039/C2TA00419D
intvolume: ' 1'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://hal.archives-ouvertes.fr/hal-00917429/
month: '01'
oa: 1
oa_version: Submitted Version
page: 1421 - 1426
publication: Journal of Materials Chemistry A
publication_status: published
publisher: Royal Society of Chemistry
publist_id: '7484'
quality_controlled: '1'
status: public
title: Colloidal synthesis and thermoelectric properties of Cu 2SnSe3 nanocrystals
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 1
year: '2013'
...
---
_id: '351'
abstract:
- lang: eng
text: 'A multistrategy approach to overcome the main challenges of nanoparticle-based
solution-processed Cu2ZnSnSe4 thin film solar cells is presented. We developed
an efficient ligand exchange strategy, using an antimony salt, to displace organic
ligands from the surface of Cu 2ZnSnS4 nanoparticles. An automated pulsed spray-deposition
system was used to deposit the nanoparticles into homogeneous and crack-free films
with controlled thickness. After annealing the film in a Se-rich atmosphere, carbon-free
and crystalline Cu2ZnSnSe4 absorber layers were obtained. Not only was crystallization
promoted by the complete removal of organics, but also Sb itself played a critical
role. The Sb-assisted crystal growth is associated with the formation of a Sb-based
compound at the grain boundaries, which locally reduces the melting point, thus
promoting the film diffusion-limited crystallization. '
acknowledgement: This work was supported by the European Regional Development Funds
and the Framework 7 program under project SCALENANO (FP7-NMP-ENERGY-2011-284486).
E.S. thanks the Spanish government for the “Ramon y Cajal” fellowship (RYC-2011-09212).
article_processing_charge: No
article_type: original
author:
- first_name: Alex
full_name: Carrete, Alex
last_name: Carrete
- first_name: Alexey
full_name: Shavel, Alexey
last_name: Shavel
- first_name: Xavier
full_name: Fontané, Xavier
last_name: Fontané
- first_name: Joana
full_name: Montserrat, Joana
last_name: Montserrat
- first_name: Jiandong
full_name: Fan, Jiandong
last_name: Fan
- first_name: Maria
full_name: Ibáñez, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibáñez
orcid: 0000-0001-5013-2843
- first_name: Edgardo
full_name: Saucedo, Edgardo
last_name: Saucedo
- first_name: Alejandro
full_name: Pérez Rodríguez, Alejandro
last_name: Pérez Rodríguez
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
citation:
ama: Carrete A, Shavel A, Fontané X, et al. Antimony-based ligand exchange to promote
crystallization in spray-deposited Cu2ZnSnSe4 solar cells. Journal of the American
Chemical Society. 2013;135(43):15982-15985. doi:10.1021/ja4068639
apa: Carrete, A., Shavel, A., Fontané, X., Montserrat, J., Fan, J., Ibáñez, M.,
… Cabot, A. (2013). Antimony-based ligand exchange to promote crystallization
in spray-deposited Cu2ZnSnSe4 solar cells. Journal of the American Chemical
Society. American Chemical Society. https://doi.org/10.1021/ja4068639
chicago: Carrete, Alex, Alexey Shavel, Xavier Fontané, Joana Montserrat, Jiandong
Fan, Maria Ibáñez, Edgardo Saucedo, Alejandro Pérez Rodríguez, and Andreu Cabot.
“Antimony-Based Ligand Exchange to Promote Crystallization in Spray-Deposited
Cu2ZnSnSe4 Solar Cells.” Journal of the American Chemical Society. American
Chemical Society, 2013. https://doi.org/10.1021/ja4068639.
ieee: A. Carrete et al., “Antimony-based ligand exchange to promote crystallization
in spray-deposited Cu2ZnSnSe4 solar cells,” Journal of the American Chemical
Society, vol. 135, no. 43. American Chemical Society, pp. 15982–15985, 2013.
ista: Carrete A, Shavel A, Fontané X, Montserrat J, Fan J, Ibáñez M, Saucedo E,
Pérez Rodríguez A, Cabot A. 2013. Antimony-based ligand exchange to promote crystallization
in spray-deposited Cu2ZnSnSe4 solar cells. Journal of the American Chemical Society.
135(43), 15982–15985.
mla: Carrete, Alex, et al. “Antimony-Based Ligand Exchange to Promote Crystallization
in Spray-Deposited Cu2ZnSnSe4 Solar Cells.” Journal of the American Chemical
Society, vol. 135, no. 43, American Chemical Society, 2013, pp. 15982–85,
doi:10.1021/ja4068639.
short: A. Carrete, A. Shavel, X. Fontané, J. Montserrat, J. Fan, M. Ibáñez, E. Saucedo,
A. Pérez Rodríguez, A. Cabot, Journal of the American Chemical Society 135 (2013)
15982–15985.
date_created: 2018-12-11T11:45:58Z
date_published: 2013-10-30T00:00:00Z
date_updated: 2021-01-12T07:43:57Z
day: '30'
doi: 10.1021/ja4068639
extern: '1'
fulldoi: https://doi.org/10.1021/ja4068639
intvolume: ' 135'
issue: '43'
language:
- iso: eng
month: '10'
oa_version: None
page: 15982 - 15985
publication: Journal of the American Chemical Society
publication_status: published
publisher: American Chemical Society
publist_id: '7479'
quality_controlled: '1'
status: public
title: Antimony-based ligand exchange to promote crystallization in spray-deposited
Cu2ZnSnSe4 solar cells
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 135
year: '2013'
...
---
_id: '352'
abstract:
- lang: eng
text: The presence of organic ligands on the surface of colloidal nanoparticles
strongly limits their performance in technological applications where charge carrier
transfer/transport plays an important role. We use metal salts, matched with the
nanoparticle composition, to eliminate the surface organic ligands without introducing
extrinsic impurities in the final nanomaterial. The potential of the simple, general
and scalable processes presented here is demonstrated by characterizing the thermoelectric
properties of nanostructured Ag2Te produced by the bottom up assembly of Ag2Te
nanocrystals. A 6-fold increase of the thermoelectric figure of merit of Ag2Te
was obtained when organic ligands were displaced by AgNO3. The same procedure
can enhance the performance of nanocrystals and nanocrystal-based devices in a
broad range of applications, from photovoltaics and thermoelectrics to catalysis.
article_processing_charge: No
article_type: original
author:
- first_name: Doris
full_name: Cadavid, Doris
last_name: Cadavid
- first_name: Maria
full_name: Ibáñez, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibáñez
orcid: 0000-0001-5013-2843
- first_name: Alexey
full_name: Shavel, Alexey
last_name: Shavel
- first_name: Oscar
full_name: Durá, Oscar
last_name: Durá
- first_name: Marco
full_name: López De La Torre, Marco
last_name: López De La Torre
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
citation:
ama: 'Cadavid D, Ibáñez M, Shavel A, Durá O, López De La Torre M, Cabot A. Organic
ligand displacement by metal salts to enhance nanoparticle functionality: Thermoelectric
properties of Ag inf 2 inf Te. Journal of Materials Chemistry A. 2013;1(15):4864-4870.
doi:10.1039/C3TA01455J'
apa: 'Cadavid, D., Ibáñez, M., Shavel, A., Durá, O., López De La Torre, M., &
Cabot, A. (2013). Organic ligand displacement by metal salts to enhance nanoparticle
functionality: Thermoelectric properties of Ag inf 2 inf Te. Journal of Materials
Chemistry A. Royal Society of Chemistry. https://doi.org/10.1039/C3TA01455J'
chicago: 'Cadavid, Doris, Maria Ibáñez, Alexey Shavel, Oscar Durá, Marco López De
La Torre, and Andreu Cabot. “Organic Ligand Displacement by Metal Salts to Enhance
Nanoparticle Functionality: Thermoelectric Properties of Ag Inf 2 Inf Te.” Journal
of Materials Chemistry A. Royal Society of Chemistry, 2013. https://doi.org/10.1039/C3TA01455J.'
ieee: 'D. Cadavid, M. Ibáñez, A. Shavel, O. Durá, M. López De La Torre, and A. Cabot,
“Organic ligand displacement by metal salts to enhance nanoparticle functionality:
Thermoelectric properties of Ag inf 2 inf Te,” Journal of Materials Chemistry
A, vol. 1, no. 15. Royal Society of Chemistry, pp. 4864–4870, 2013.'
ista: 'Cadavid D, Ibáñez M, Shavel A, Durá O, López De La Torre M, Cabot A. 2013.
Organic ligand displacement by metal salts to enhance nanoparticle functionality:
Thermoelectric properties of Ag inf 2 inf Te. Journal of Materials Chemistry A.
1(15), 4864–4870.'
mla: 'Cadavid, Doris, et al. “Organic Ligand Displacement by Metal Salts to Enhance
Nanoparticle Functionality: Thermoelectric Properties of Ag Inf 2 Inf Te.” Journal
of Materials Chemistry A, vol. 1, no. 15, Royal Society of Chemistry, 2013,
pp. 4864–70, doi:10.1039/C3TA01455J.'
short: D. Cadavid, M. Ibáñez, A. Shavel, O. Durá, M. López De La Torre, A. Cabot,
Journal of Materials Chemistry A 1 (2013) 4864–4870.
date_created: 2018-12-11T11:45:58Z
date_published: 2013-02-13T00:00:00Z
date_updated: 2021-01-12T07:44:02Z
day: '13'
doi: 10.1039/C3TA01455J
extern: '1'
fulldoi: https://doi.org/10.1039/C3TA01455J
intvolume: ' 1'
issue: '15'
language:
- iso: eng
month: '02'
oa_version: None
page: 4864 - 4870
publication: Journal of Materials Chemistry A
publication_status: published
publisher: Royal Society of Chemistry
publist_id: '7481'
quality_controlled: '1'
status: public
title: 'Organic ligand displacement by metal salts to enhance nanoparticle functionality:
Thermoelectric properties of Ag inf 2 inf Te'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 1
year: '2013'
...
---
_id: '376'
abstract:
- lang: eng
text: The compositional versatility of I2–II–IV–VI4 tetrahedrally-coordinated compounds
allows for accommodating their functional properties to numerous technological
applications. Among them, Cu2ZnSnSe4 is an emerging photovoltaic material and
Cu2CdSnSe4 displays excellent thermoelectric properties. The third compound of
this family, Cu2HgSnSe4, remains relatively unexplored. Herein, a synthetic route
to produce Cu2HgSnSe4 nanoparticles with narrow size distribution and controlled
composition is presented. Cu2HgSnSe4 nanoparticles were subsequently used as building
blocks to produce bulk nanocrystalline materials, whose thermoelectric properties
were analyzed. A very preliminary adjustment of the material composition yielded
Seebeck coefficients up to 160 μV K−1, electrical conductivities close to 104
S m−1 and thermal conductivities down to 0.5 W m−1 K−1.
author:
- first_name: Wenhua
full_name: Li, Wenhua
last_name: Li
- first_name: Maria
full_name: Ibáñez, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibáñez
orcid: 0000-0001-5013-2843
- first_name: Reza
full_name: Zamani, Reza
last_name: Zamani
- first_name: Nuria
full_name: García Castelló, Nuria
last_name: García Castelló
- first_name: Grosse
full_name: Stéphane, Grosse
last_name: Stéphane
- first_name: Doris
full_name: Cadavid, Doris
last_name: Cadavid
- first_name: Joan
full_name: Prades, Joan
last_name: Prades
- first_name: Jordi
full_name: Arbiol, Jordi
last_name: Arbiol
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
citation:
ama: 'Li W, Ibáñez M, Zamani R, et al. Cu2HgSnSe4 nanoparticles: synthesis and thermoelectric
properties. CrystEngComm. 2013;44:8966-8971. doi:10.1039/C3CE41583J'
apa: 'Li, W., Ibáñez, M., Zamani, R., García Castelló, N., Stéphane, G., Cadavid,
D., … Cabot, A. (2013). Cu2HgSnSe4 nanoparticles: synthesis and thermoelectric
properties. CrystEngComm. Royal Society of Chemistry. https://doi.org/10.1039/C3CE41583J'
chicago: 'Li, Wenhua, Maria Ibáñez, Reza Zamani, Nuria García Castelló, Grosse Stéphane,
Doris Cadavid, Joan Prades, Jordi Arbiol, and Andreu Cabot. “Cu2HgSnSe4 Nanoparticles:
Synthesis and Thermoelectric Properties.” CrystEngComm. Royal Society of
Chemistry, 2013. https://doi.org/10.1039/C3CE41583J.'
ieee: 'W. Li et al., “Cu2HgSnSe4 nanoparticles: synthesis and thermoelectric
properties,” CrystEngComm, vol. 44. Royal Society of Chemistry, pp. 8966–8971,
2013.'
ista: 'Li W, Ibáñez M, Zamani R, García Castelló N, Stéphane G, Cadavid D, Prades
J, Arbiol J, Cabot A. 2013. Cu2HgSnSe4 nanoparticles: synthesis and thermoelectric
properties. CrystEngComm. 44, 8966–8971.'
mla: 'Li, Wenhua, et al. “Cu2HgSnSe4 Nanoparticles: Synthesis and Thermoelectric
Properties.” CrystEngComm, vol. 44, Royal Society of Chemistry, 2013, pp.
8966–71, doi:10.1039/C3CE41583J.'
short: W. Li, M. Ibáñez, R. Zamani, N. García Castelló, G. Stéphane, D. Cadavid,
J. Prades, J. Arbiol, A. Cabot, CrystEngComm 44 (2013) 8966–8971.
date_created: 2018-12-11T11:46:07Z
date_published: 2013-09-23T00:00:00Z
date_updated: 2021-01-12T07:52:00Z
day: '23'
doi: 10.1039/C3CE41583J
extern: '1'
fulldoi: https://doi.org/10.1039/C3CE41583J
intvolume: ' 44'
language:
- iso: eng
month: '09'
oa_version: None
page: 8966 - 8971
publication: CrystEngComm
publication_status: published
publisher: Royal Society of Chemistry
publist_id: '7453'
quality_controlled: '1'
status: public
title: 'Cu2HgSnSe4 nanoparticles: synthesis and thermoelectric properties'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 44
year: '2013'
...
---
_id: '378'
abstract:
- lang: eng
text: Until recently, to prepare nanocrystals of a new material, scientists searched
their shelves for the appropriate molecular precursors, surfactants, and solvents.
They then optimized the reaction conditions for the atoms to self-assemble into
monodisperse nanocrystals (1). This approach is being replaced by a simpler strategy,
in which preformed nanocrystals serve as templates to produce nanoparticles with
a different composition through chemical transformation. On page 964 of this issue,
Oh et al. (2) report a powerful mechanism that allows the composition of oxide
nanoparticles to be transformed in solution and at low temperatures.
article_processing_charge: No
author:
- first_name: Maria
full_name: Ibáñez, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibáñez
orcid: 0000-0001-5013-2843
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
citation:
ama: Ibáñez M, Cabot A. All change for nanocrystals. Science. 2013;340(6135):935-936.
doi:10.1126/science.1239221
apa: Ibáñez, M., & Cabot, A. (2013). All change for nanocrystals. Science.
American Association for the Advancement of Science. https://doi.org/10.1126/science.1239221
chicago: Ibáñez, Maria, and Andreu Cabot. “All Change for Nanocrystals.” Science.
American Association for the Advancement of Science, 2013. https://doi.org/10.1126/science.1239221.
ieee: M. Ibáñez and A. Cabot, “All change for nanocrystals,” Science, vol.
340, no. 6135. American Association for the Advancement of Science, pp. 935–936,
2013.
ista: Ibáñez M, Cabot A. 2013. All change for nanocrystals. Science. 340(6135),
935–936.
mla: Ibáñez, Maria, and Andreu Cabot. “All Change for Nanocrystals.” Science,
vol. 340, no. 6135, American Association for the Advancement of Science, 2013,
pp. 935–36, doi:10.1126/science.1239221.
short: M. Ibáñez, A. Cabot, Science 340 (2013) 935–936.
date_created: 2018-12-11T11:46:08Z
date_published: 2013-05-24T00:00:00Z
date_updated: 2021-01-12T07:52:09Z
day: '24'
doi: 10.1126/science.1239221
extern: '1'
fulldoi: https://doi.org/10.1126/science.1239221
intvolume: ' 340'
issue: '6135'
language:
- iso: eng
month: '05'
oa_version: None
page: 935 - 936
publication: Science
publication_status: published
publisher: American Association for the Advancement of Science
publist_id: '7451'
status: public
title: All change for nanocrystals
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 340
year: '2013'
...
---
_id: '1726'
abstract:
- lang: eng
text: The development of a functional tissue requires coordination of the amplification
of progenitors and their differentiation into specific cell types. The molecular
basis for this coordination during myotome ontogeny is not well understood. Dermomytome
progenitors that colonize the myotome first acquire myocyte identity and subsequently
proliferate as Pax7-expressing progenitors before undergoing terminal differentiation.
We show that the dynamics of sonic hedgehog (Shh) signaling is crucial for this
transition in both avian and mouse embryos. Initially, Shh ligand emanating from
notochord/floor plate reaches the dermomyotome, where it both maintains the proliferation
of dermomyotome cells and promotes myogenic differentiation of progenitors that
colonized the myotome. Interfering with Shh signaling at this stage produces small
myotomes and accumulation of Pax7-expressing progenitors. An in vivo reporter
of Shh activity combined with mouse genetics revealed the existence of both activator
and repressor Shh activities operating on distinct subsets of cells during the
epaxial myotomal maturation. In contrast to observations in mice, in avians Shh
promotes the differentiation of both epaxial and hypaxial myotome domains. Subsequently,
myogenic progenitors become refractory to Shh; this is likely to occur at the
level of, or upstream of, smoothened signaling. The end of responsiveness to Shh
coincides with, and is thus likely to enable, the transition into the growth phase
of the myotome.
acknowledgement: This study was supported by grants from the Israel Science Foundation
(ISF) [11/09 to C.K.]; the Association Francaise contre les Myopathies (AFM) [15642
to C.K.]; the German Research Foundation (DFG) [UN 34/27-1 to C.K.]; the UK Medical
Research Council (MRC) [U117560541 to J.B. and A.K.]; Fondation Pour la Recherche
Médicale (FRM) (post-doctoral fellowship to V.R.). Deposited in PMC for release
after 6 months
author:
- first_name: Nitza
full_name: Kahane, Nitza
last_name: Kahane
- first_name: Vanessa
full_name: Ribes, Vanessa
last_name: Ribes
- first_name: Anna
full_name: Anna Kicheva
id: 3959A2A0-F248-11E8-B48F-1D18A9856A87
last_name: Kicheva
orcid: 0000-0003-4509-4998
- first_name: James
full_name: Briscoe, James
last_name: Briscoe
- first_name: Chaya
full_name: Kalcheim, Chaya
last_name: Kalcheim
citation:
ama: Kahane N, Ribes V, Kicheva A, Briscoe J, Kalcheim C. The transition from differentiation
to growth during dermomyotome-derived myogenesis depends on temporally restricted
hedgehog signaling. Development. 2013;140(8):1740-1750. doi:10.1242/dev.092726
apa: Kahane, N., Ribes, V., Kicheva, A., Briscoe, J., & Kalcheim, C. (2013).
The transition from differentiation to growth during dermomyotome-derived myogenesis
depends on temporally restricted hedgehog signaling. Development. Company
of Biologists. https://doi.org/10.1242/dev.092726
chicago: Kahane, Nitza, Vanessa Ribes, Anna Kicheva, James Briscoe, and Chaya Kalcheim.
“The Transition from Differentiation to Growth during Dermomyotome-Derived Myogenesis
Depends on Temporally Restricted Hedgehog Signaling.” Development. Company
of Biologists, 2013. https://doi.org/10.1242/dev.092726.
ieee: N. Kahane, V. Ribes, A. Kicheva, J. Briscoe, and C. Kalcheim, “The transition
from differentiation to growth during dermomyotome-derived myogenesis depends
on temporally restricted hedgehog signaling,” Development, vol. 140, no.
8. Company of Biologists, pp. 1740–1750, 2013.
ista: Kahane N, Ribes V, Kicheva A, Briscoe J, Kalcheim C. 2013. The transition
from differentiation to growth during dermomyotome-derived myogenesis depends
on temporally restricted hedgehog signaling. Development. 140(8), 1740–1750.
mla: Kahane, Nitza, et al. “The Transition from Differentiation to Growth during
Dermomyotome-Derived Myogenesis Depends on Temporally Restricted Hedgehog Signaling.”
Development, vol. 140, no. 8, Company of Biologists, 2013, pp. 1740–50,
doi:10.1242/dev.092726.
short: N. Kahane, V. Ribes, A. Kicheva, J. Briscoe, C. Kalcheim, Development 140
(2013) 1740–1750.
date_created: 2018-12-11T11:53:41Z
date_published: 2013-04-18T00:00:00Z
date_updated: 2021-01-12T06:52:47Z
day: '18'
doi: 10.1242/dev.092726
extern: 1
fulldoi: https://doi.org/10.1242/dev.092726
intvolume: ' 140'
issue: '8'
month: '04'
page: 1740 - 1750
publication: Development
publication_status: published
publisher: Company of Biologists
publist_id: '5402'
quality_controlled: 0
status: public
title: The transition from differentiation to growth during dermomyotome-derived myogenesis
depends on temporally restricted hedgehog signaling
type: journal_article
volume: 140
year: '2013'
...
---
_id: '1727'
abstract:
- lang: eng
text: 'Cells at different positions in a developing tissue receive different concentrations
of signaling molecules, called morphogens, and this influences their cell fate.
Morphogen concentration gradients have been proposed to control patterning as
well as growth in many developing tissues. Some outstanding questions about tissue
patterning by morphogen gradients are the following: What are the mechanisms that
regulate gradient formation and shape? Is the positional information encoded in
the gradient sufficiently precise to determine the positions of target gene domain
boundaries? What are the temporal dynamics of gradients and how do they relate
to patterning and growth? These questions are inherently quantitative in nature
and addressing them requires measuring morphogen concentrations in cells, levels
of downstream signaling activity, and kinetics of morphogen transport. Here we
first present methods for quantifying morphogen gradient shape in which the measurements
can be calibrated to reflect actual morphogen concentrations. We then discuss
using fluorescence recovery after photobleaching to study the kinetics of morphogen
transport at the tissue level. Finally, we present particle tracking as a method
to study morphogen intracellular trafficking.'
author:
- first_name: Anna
full_name: Anna Kicheva
id: 3959A2A0-F248-11E8-B48F-1D18A9856A87
last_name: Kicheva
orcid: 0000-0003-4509-4998
- first_name: Laurent
full_name: Holtzer, Laurent
last_name: Holtzer
- first_name: Ortrud
full_name: Wartlick, Ortrud
last_name: Wartlick
- first_name: Thomas
full_name: Schmidt, Thomas S
last_name: Schmidt
- first_name: Marcos
full_name: González-Gaitán, Marcos A
last_name: González Gaitán
citation:
ama: Kicheva A, Holtzer L, Wartlick O, Schmidt T, González Gaitán M. Quantitative
imaging of morphogen gradients in drosophila imaginal discs. Cold Spring Harbor
Protocols. 2013;8(5):387-403. doi:10.1101/pdb.top074237
apa: Kicheva, A., Holtzer, L., Wartlick, O., Schmidt, T., & González Gaitán,
M. (2013). Quantitative imaging of morphogen gradients in drosophila imaginal
discs. Cold Spring Harbor Protocols. Cold Spring Harbor Laboratory Press.
https://doi.org/10.1101/pdb.top074237
chicago: Kicheva, Anna, Laurent Holtzer, Ortrud Wartlick, Thomas Schmidt, and Marcos
González Gaitán. “Quantitative Imaging of Morphogen Gradients in Drosophila Imaginal
Discs.” Cold Spring Harbor Protocols. Cold Spring Harbor Laboratory Press,
2013. https://doi.org/10.1101/pdb.top074237.
ieee: A. Kicheva, L. Holtzer, O. Wartlick, T. Schmidt, and M. González Gaitán, “Quantitative
imaging of morphogen gradients in drosophila imaginal discs,” Cold Spring Harbor
Protocols, vol. 8, no. 5. Cold Spring Harbor Laboratory Press, pp. 387–403,
2013.
ista: Kicheva A, Holtzer L, Wartlick O, Schmidt T, González Gaitán M. 2013. Quantitative
imaging of morphogen gradients in drosophila imaginal discs. Cold Spring Harbor
Protocols. 8(5), 387–403.
mla: Kicheva, Anna, et al. “Quantitative Imaging of Morphogen Gradients in Drosophila
Imaginal Discs.” Cold Spring Harbor Protocols, vol. 8, no. 5, Cold Spring
Harbor Laboratory Press, 2013, pp. 387–403, doi:10.1101/pdb.top074237.
short: A. Kicheva, L. Holtzer, O. Wartlick, T. Schmidt, M. González Gaitán, Cold
Spring Harbor Protocols 8 (2013) 387–403.
date_created: 2018-12-11T11:53:41Z
date_published: 2013-05-01T00:00:00Z
date_updated: 2021-01-12T06:52:47Z
day: '01'
doi: 10.1101/pdb.top074237
extern: 1
fulldoi: https://doi.org/10.1101/pdb.top074237
intvolume: ' 8'
issue: '5'
month: '05'
page: 387 - 403
publication: Cold Spring Harbor Protocols
publication_status: published
publisher: Cold Spring Harbor Laboratory Press
publist_id: '5401'
quality_controlled: 0
status: public
title: Quantitative imaging of morphogen gradients in drosophila imaginal discs
type: journal_article
volume: 8
year: '2013'
...
---
_id: '1759'
abstract:
- lang: eng
text: We report an electric-field-induced giant modulation of the hole g factor
in SiGe nanocrystals. The observed effect is ascribed to a so-far overlooked contribution
to the g factor that stems from the mixing between heavy- and light-hole wave
functions. We show that the relative displacement between the confined heavy-
and light-hole states, occurring upon application of the electric field, alters
their mixing strength leading to a strong nonmonotonic modulation of the g factor.
acknowledgement: We acknowledge financial support from the Nanosciences Foundation
(Grenoble, France), DOE under Contract No. DEFG02-08ER46482 (Yale), the Agence Nationale
de la Recherche, and the European Starting Grant. G. K. acknowledges support from
the European Commission via a Marie Curie Carrer Integration Grant and the FWF for
a Lise-Meitner Fellowship
author:
- first_name: Natalia
full_name: Ares, Natalia
last_name: Ares
- first_name: Vitaly
full_name: Golovach, Vitaly N
last_name: Golovach
- first_name: Georgios
full_name: Georgios Katsaros
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
- first_name: Mathieu
full_name: Stoffel, Mathieu
last_name: Stoffel
- first_name: Frank
full_name: Fournel, Frank
last_name: Fournel
- first_name: Leonid
full_name: Glazman, Leonid I
last_name: Glazman
- first_name: Oliver
full_name: Schmidt, Oliver G
last_name: Schmidt
- first_name: Silvano
full_name: De Franceschi, Silvano
last_name: De Franceschi
citation:
ama: Ares N, Golovach V, Katsaros G, et al. Nature of tunable hole g factors in
quantum dots. Physical Review Letters. 2013;110(4). doi:10.1103/PhysRevLett.110.046602
apa: Ares, N., Golovach, V., Katsaros, G., Stoffel, M., Fournel, F., Glazman, L.,
… De Franceschi, S. (2013). Nature of tunable hole g factors in quantum dots.
Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.110.046602
chicago: Ares, Natalia, Vitaly Golovach, Georgios Katsaros, Mathieu Stoffel, Frank
Fournel, Leonid Glazman, Oliver Schmidt, and Silvano De Franceschi. “Nature of
Tunable Hole g Factors in Quantum Dots.” Physical Review Letters. American
Physical Society, 2013. https://doi.org/10.1103/PhysRevLett.110.046602.
ieee: N. Ares et al., “Nature of tunable hole g factors in quantum dots,”
Physical Review Letters, vol. 110, no. 4. American Physical Society, 2013.
ista: Ares N, Golovach V, Katsaros G, Stoffel M, Fournel F, Glazman L, Schmidt O,
De Franceschi S. 2013. Nature of tunable hole g factors in quantum dots. Physical
Review Letters. 110(4).
mla: Ares, Natalia, et al. “Nature of Tunable Hole g Factors in Quantum Dots.” Physical
Review Letters, vol. 110, no. 4, American Physical Society, 2013, doi:10.1103/PhysRevLett.110.046602.
short: N. Ares, V. Golovach, G. Katsaros, M. Stoffel, F. Fournel, L. Glazman, O.
Schmidt, S. De Franceschi, Physical Review Letters 110 (2013).
date_created: 2018-12-11T11:53:51Z
date_published: 2013-01-23T00:00:00Z
date_updated: 2021-01-12T06:53:01Z
day: '23'
doi: 10.1103/PhysRevLett.110.046602
extern: 1
fulldoi: https://doi.org/10.1103/PhysRevLett.110.046602
intvolume: ' 110'
issue: '4'
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1208.0476
month: '01'
oa: 1
publication: Physical Review Letters
publication_status: published
publisher: American Physical Society
publist_id: '5365'
quality_controlled: 0
status: public
title: Nature of tunable hole g factors in quantum dots
type: journal_article
volume: 110
year: '2013'
...
---
_id: '1760'
abstract:
- lang: eng
text: We report on hole g-factor measurements in three terminal SiGe self-assembled
quantum dot devices with a top gate electrode positioned very close to the nanostructure.
Measurements of both the perpendicular as well as the parallel g-factor reveal
significant changes for a small modulation of the top gate voltage. From the observed
modulations, we estimate that, for realistic experimental conditions, hole spins
can be electrically manipulated with Rabi frequencies in the order of 100 MHz.
This work emphasises the potential of hole-based nano-devices for efficient spin
manipulation by means of the g-tensor modulation technique.
acknowledgement: We acknowledge the financial support from the Nanosciences Foundation
(Grenoble, France), the Commission for a Marie Curie Carrer Integration Grant, the
Austrian Science Fund (FWF) for a Lise-Meitner Fellowship (M1435-N30), the DOE under
Contract No. DE-FG02-08ER46482 (Yale), the European Starting Grant program, and
the Agence Nationale de la Recherche
author:
- first_name: Natalia
full_name: Ares, Natalia
last_name: Ares
- first_name: Georgios
full_name: Georgios Katsaros
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
- first_name: Vitaly
full_name: Golovach, Vitaly N
last_name: Golovach
- first_name: Jianjun
full_name: Zhang, Jianjun
last_name: Zhang
- first_name: Aaron
full_name: Prager, Aaron A
last_name: Prager
- first_name: Leonid
full_name: Glazman, Leonid I
last_name: Glazman
- first_name: Oliver
full_name: Schmidt, Oliver G
last_name: Schmidt
- first_name: Silvano
full_name: De Franceschi, Silvano
last_name: De Franceschi
citation:
ama: Ares N, Katsaros G, Golovach V, et al. SiGe quantum dots for fast hole spin
Rabi oscillations. Applied Physics Letters. 2013;103(26). doi:10.1063/1.4858959
apa: Ares, N., Katsaros, G., Golovach, V., Zhang, J., Prager, A., Glazman, L., …
De Franceschi, S. (2013). SiGe quantum dots for fast hole spin Rabi oscillations.
Applied Physics Letters. American Institute of Physics. https://doi.org/10.1063/1.4858959
chicago: Ares, Natalia, Georgios Katsaros, Vitaly Golovach, Jianjun Zhang, Aaron
Prager, Leonid Glazman, Oliver Schmidt, and Silvano De Franceschi. “SiGe Quantum
Dots for Fast Hole Spin Rabi Oscillations.” Applied Physics Letters. American
Institute of Physics, 2013. https://doi.org/10.1063/1.4858959.
ieee: N. Ares et al., “SiGe quantum dots for fast hole spin Rabi oscillations,”
Applied Physics Letters, vol. 103, no. 26. American Institute of Physics,
2013.
ista: Ares N, Katsaros G, Golovach V, Zhang J, Prager A, Glazman L, Schmidt O, De
Franceschi S. 2013. SiGe quantum dots for fast hole spin Rabi oscillations. Applied
Physics Letters. 103(26).
mla: Ares, Natalia, et al. “SiGe Quantum Dots for Fast Hole Spin Rabi Oscillations.”
Applied Physics Letters, vol. 103, no. 26, American Institute of Physics,
2013, doi:10.1063/1.4858959.
short: N. Ares, G. Katsaros, V. Golovach, J. Zhang, A. Prager, L. Glazman, O. Schmidt,
S. De Franceschi, Applied Physics Letters 103 (2013).
date_created: 2018-12-11T11:53:52Z
date_published: 2013-01-23T00:00:00Z
date_updated: 2021-01-12T06:53:02Z
day: '23'
doi: 10.1063/1.4858959
extern: 1
fulldoi: https://doi.org/10.1063/1.4858959
intvolume: ' 103'
issue: '26'
main_file_link:
- open_access: '1'
url: http://arxiv.org/abs/1307.7196
month: '01'
oa: 1
publication: Applied Physics Letters
publication_status: published
publisher: American Institute of Physics
publist_id: '5364'
quality_controlled: 0
status: public
title: SiGe quantum dots for fast hole spin Rabi oscillations
type: journal_article
volume: 103
year: '2013'
...
---
_id: '17624'
abstract:
- lang: eng
text: 'A near-equal-mass binary black hole (BH) can clear a central cavity in a
circumbinary accretion disc; however, previous works have revealed accretion streams
entering this cavity. Here we use 2D hydrodynamical simulations to study the accretion
streams and their periodic behaviour. In particular, we perform a suite of simulations,
covering different binary mass ratios q = M2/M1 in the range 0.003 ≤ q ≤ 1. In
each case, we follow the system for several thousand binary orbits, until it relaxes
to a stable accretion pattern. We find the following results: (i) the binary is
efficient in maintaining a low-density cavity. However, the time-averaged mass
accretion rate into the cavity, through narrow coherent accretion streams, is
suppressed by at most a factor of a few compared to a disc with a single BH with
the same mass; (ii) for q ≳ 0.05, the accretion rate is strongly modulated by
the binary, and depending on the precise value of q, the power spectrum of the
accretion rate shows either one, two or three distinct periods; and (iii) for
q ≲ 0.05, the accretion rate becomes steady, with no time variations. Most binaries
produced in galactic mergers are expected to have q ≳ 0.05. If the luminosity
of these binaries tracks their accretion rate, then a periodogram of their light
curve could help in their identification, and to constrain their mass ratio and
disc properties.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Daniel J.
full_name: D'Orazio, Daniel J.
last_name: D'Orazio
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Andrew
full_name: MacFadyen, Andrew
last_name: MacFadyen
citation:
ama: D’Orazio DJ, Haiman Z, MacFadyen A. Accretion into the central cavity of a
circumbinary disc. Monthly Notices of the Royal Astronomical Society. 2013;436(4):2997-3020.
doi:10.1093/mnras/stt1787
apa: D’Orazio, D. J., Haiman, Z., & MacFadyen, A. (2013). Accretion into the
central cavity of a circumbinary disc. Monthly Notices of the Royal Astronomical
Society. Oxford University Press. https://doi.org/10.1093/mnras/stt1787
chicago: D’Orazio, Daniel J., Zoltán Haiman, and Andrew MacFadyen. “Accretion into
the Central Cavity of a Circumbinary Disc.” Monthly Notices of the Royal Astronomical
Society. Oxford University Press, 2013. https://doi.org/10.1093/mnras/stt1787.
ieee: D. J. D’Orazio, Z. Haiman, and A. MacFadyen, “Accretion into the central cavity
of a circumbinary disc,” Monthly Notices of the Royal Astronomical Society,
vol. 436, no. 4. Oxford University Press, pp. 2997–3020, 2013.
ista: D’Orazio DJ, Haiman Z, MacFadyen A. 2013. Accretion into the central cavity
of a circumbinary disc. Monthly Notices of the Royal Astronomical Society. 436(4),
2997–3020.
mla: D’Orazio, Daniel J., et al. “Accretion into the Central Cavity of a Circumbinary
Disc.” Monthly Notices of the Royal Astronomical Society, vol. 436, no.
4, Oxford University Press, 2013, pp. 2997–3020, doi:10.1093/mnras/stt1787.
short: D.J. D’Orazio, Z. Haiman, A. MacFadyen, Monthly Notices of the Royal Astronomical
Society 436 (2013) 2997–3020.
date_created: 2024-09-05T13:53:11Z
date_published: 2013-10-18T00:00:00Z
date_updated: 2024-09-24T08:47:58Z
day: '18'
doi: 10.1093/mnras/stt1787
extern: '1'
external_id:
arxiv:
- '1210.0536'
fulldoi: https://doi.org/10.1093/mnras/stt1787
intvolume: ' 436'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1210.0536'
month: '10'
oa: 1
oa_version: Preprint
page: 2997-3020
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
issn:
- 1365-2966
- 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Accretion into the central cavity of a circumbinary disc
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 436
year: '2013'
...
---
_id: '17631'
abstract:
- lang: eng
text: We propose a novel use of high-redshift galaxies, discovered in deep Hubble
Space Telescope (HST) fields around strong lensing clusters. These fields probe
small comoving volumes (∼103 Mpc3) at high magnification (μ ≳ 10) and can detect
otherwise inaccessible ultra-faint galaxies. Even a few galaxies found in such
small volumes require a very high number density of collapsed dark matter (DM)
haloes. This implies significant primordial power on small scales, allowing these
observations to rule out popular alternatives to standard cold dark matter (CDM)
models, such as warm dark matter (WDM). In this work, we analytically compute
WDM halo mass functions at z = 10, including the effects of both particle free-streaming
and residual velocity dispersion. We show that the two z ≈ 10 galaxies already
detected by the Cluster Lensing And Supernova survey with Hubble (CLASH) survey
are sufficient to constrain the WDM particle mass to mx > 1 (0.9) keV at 68 per cent
(95 per cent) confidence limit (for a thermal relic relativistic at decoupling).
This limit depends only on the WDM halo mass function and, unlike previous constraints
on mx, is independent of any astrophysical modelling. The forthcoming HST Frontier
Fields can significantly tighten these constraints.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Fabio
full_name: Pacucci, Fabio
last_name: Pacucci
- first_name: Andrei
full_name: Mesinger, Andrei
last_name: Mesinger
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
citation:
ama: 'Pacucci F, Mesinger A, Haiman Z. Focusing on warm dark matter with lensed
high-redshift galaxies. Monthly Notices of the Royal Astronomical Society:
Letters. 2013;435(1):L53-L57. doi:10.1093/mnrasl/slt093'
apa: 'Pacucci, F., Mesinger, A., & Haiman, Z. (2013). Focusing on warm dark
matter with lensed high-redshift galaxies. Monthly Notices of the Royal Astronomical
Society: Letters. Oxford University Press. https://doi.org/10.1093/mnrasl/slt093'
chicago: 'Pacucci, Fabio, Andrei Mesinger, and Zoltán Haiman. “Focusing on Warm
Dark Matter with Lensed High-Redshift Galaxies.” Monthly Notices of the Royal
Astronomical Society: Letters. Oxford University Press, 2013. https://doi.org/10.1093/mnrasl/slt093.'
ieee: 'F. Pacucci, A. Mesinger, and Z. Haiman, “Focusing on warm dark matter with
lensed high-redshift galaxies,” Monthly Notices of the Royal Astronomical Society:
Letters, vol. 435, no. 1. Oxford University Press, pp. L53–L57, 2013.'
ista: 'Pacucci F, Mesinger A, Haiman Z. 2013. Focusing on warm dark matter with
lensed high-redshift galaxies. Monthly Notices of the Royal Astronomical Society:
Letters. 435(1), L53–L57.'
mla: 'Pacucci, Fabio, et al. “Focusing on Warm Dark Matter with Lensed High-Redshift
Galaxies.” Monthly Notices of the Royal Astronomical Society: Letters,
vol. 435, no. 1, Oxford University Press, 2013, pp. L53–57, doi:10.1093/mnrasl/slt093.'
short: 'F. Pacucci, A. Mesinger, Z. Haiman, Monthly Notices of the Royal Astronomical
Society: Letters 435 (2013) L53–L57.'
date_created: 2024-09-05T14:00:29Z
date_published: 2013-08-09T00:00:00Z
date_updated: 2024-09-24T09:59:26Z
day: '09'
doi: 10.1093/mnrasl/slt093
extern: '1'
external_id:
arxiv:
- '1306.0009'
fulldoi: https://doi.org/10.1093/mnrasl/slt093
intvolume: ' 435'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1306.0009'
month: '08'
oa: 1
oa_version: Preprint
page: L53-L57
publication: 'Monthly Notices of the Royal Astronomical Society: Letters'
publication_identifier:
issn:
- 1745-3933
- 1745-3925
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Focusing on warm dark matter with lensed high-redshift galaxies
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 435
year: '2013'
...
---
_id: '17638'
abstract:
- lang: eng
text: Pulsar timing arrays (PTAs) may eventually be able to detect not only the
stochastic gravitational-wave (GW) background of SMBH binaries, but also individual,
particularly massive binaries whose signals stick out above the background. In
this contribution, we discuss the possibility of identifying and studying such
'resolved' binaries through their electromagnetic emission. The host galaxies
of such binaries are themselves expected to be also very massive and rare, so
that out to redshifts z ≈ 0.2 a unique massive galaxy may be identified as the
host. At higher redshifts, the PTA error boxes are larger and may contain as many
as several hundred massive-galaxy interlopers. In this case, the true counterpart
may be identified, if it is accreting gas efficiently, as an active galactic nucleus
(AGN) with a peculiar spectrum and variable emission features. Specifically, the
binary's tidal torques expel the gas from the inner part of the accretion disc,
making it unusually dim in x-ray and UV bands and in broad optical emission lines.
The tails of the broad wings of any FeKα emission line may also be 'clipped' and
missing. The binary's orbital motion, as well as the gas motions it induces, may
trigger quasiperiodic variations. These include coherent flux variability, such
as luminous, multi-wavelength flares, as well as Doppler shifts of broad emission
lines and 'see-saw' oscillations in the FeKα line. Additional features, such as
evidence for a recent major merger or dual collimated jets, could also corroborate
the counterpart. These properties would make resolved PTA sources stand out among
AGN with similar overall luminosities and allow their identification.
article_number: '224012'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Takamitsu L
full_name: Tanaka, Takamitsu L
last_name: Tanaka
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
citation:
ama: Tanaka TL, Haiman Z. Electromagnetic signatures of supermassive black hole
binaries resolved by PTAs. Classical and Quantum Gravity. 2013;30(22).
doi:10.1088/0264-9381/30/22/224012
apa: Tanaka, T. L., & Haiman, Z. (2013). Electromagnetic signatures of supermassive
black hole binaries resolved by PTAs. Classical and Quantum Gravity. IOP
Publishing. https://doi.org/10.1088/0264-9381/30/22/224012
chicago: Tanaka, Takamitsu L, and Zoltán Haiman. “Electromagnetic Signatures of
Supermassive Black Hole Binaries Resolved by PTAs.” Classical and Quantum Gravity.
IOP Publishing, 2013. https://doi.org/10.1088/0264-9381/30/22/224012.
ieee: T. L. Tanaka and Z. Haiman, “Electromagnetic signatures of supermassive black
hole binaries resolved by PTAs,” Classical and Quantum Gravity, vol. 30,
no. 22. IOP Publishing, 2013.
ista: Tanaka TL, Haiman Z. 2013. Electromagnetic signatures of supermassive black
hole binaries resolved by PTAs. Classical and Quantum Gravity. 30(22), 224012.
mla: Tanaka, Takamitsu L., and Zoltán Haiman. “Electromagnetic Signatures of Supermassive
Black Hole Binaries Resolved by PTAs.” Classical and Quantum Gravity, vol.
30, no. 22, 224012, IOP Publishing, 2013, doi:10.1088/0264-9381/30/22/224012.
short: T.L. Tanaka, Z. Haiman, Classical and Quantum Gravity 30 (2013).
date_created: 2024-09-06T07:16:12Z
date_published: 2013-11-04T00:00:00Z
date_updated: 2024-09-24T11:39:17Z
day: '04'
doi: 10.1088/0264-9381/30/22/224012
extern: '1'
external_id:
arxiv:
- '1309.2302'
fulldoi: https://doi.org/10.1088/0264-9381/30/22/224012
intvolume: ' 30'
issue: '22'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1309.2302'
month: '11'
oa: 1
oa_version: Preprint
publication: Classical and Quantum Gravity
publication_identifier:
issn:
- 0264-9381
- 1361-6382
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Electromagnetic signatures of supermassive black hole binaries resolved by
PTAs
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 30
year: '2013'
...
---
_id: '17646'
abstract:
- lang: eng
text: Structures in Warm Dark Matter (WDM) models are exponentially suppressed below
a certain scale, characterized by the dark matter particle mass, mx. Since structures
form hierarchically, the presence of collapsed objects at high-redshifts can set
strong lower limits on mx. We place robust constraints on mx using recent results
from the {\it Swift} database of high-redshift gamma-ray bursts (GRBs). We parameterize
the redshift evolution of the ratio between the cosmic GRB rate and star formation
rate (SFR) as ∝(1+z)α, thereby allowing astrophysical uncertainties to partially
mimic the cosmological suppression of structures in WDM models. Using a maximum
likelihood estimator on two different z>4 GRB subsamples (including two bursts
at z>8), we constrain mx≳1.6-1.8 keV at 95% C.L., when marginalized over a flat
prior in α. We further estimate that 5 years of a SVOM-like mission would tighten
these constraints to mx≳2.3 keV. Our results show that GRBs are a powerful probe
of high-redshift structures, providing robust and competitive constraints on mx.
article_processing_charge: No
article_type: original
author:
- first_name: R. S.
full_name: de Souza, R. S.
last_name: de Souza
- first_name: A.
full_name: Mesinger, A.
last_name: Mesinger
- first_name: A.
full_name: Ferrara, A.
last_name: Ferrara
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: R.
full_name: Perna, R.
last_name: Perna
- first_name: N.
full_name: Yoshida, N.
last_name: Yoshida
citation:
ama: de Souza RS, Mesinger A, Ferrara A, Haiman Z, Perna R, Yoshida N. Constraints
on warm dark matter models from high-redshift long gamma-ray bursts. Monthly
Notices of the Royal Astronomical Society. 2013;432(4):3218-3227. doi:10.1093/mnras/stt674
apa: de Souza, R. S., Mesinger, A., Ferrara, A., Haiman, Z., Perna, R., & Yoshida,
N. (2013). Constraints on warm dark matter models from high-redshift long gamma-ray
bursts. Monthly Notices of the Royal Astronomical Society. Oxford University
Press. https://doi.org/10.1093/mnras/stt674
chicago: Souza, R. S. de, A. Mesinger, A. Ferrara, Zoltán Haiman, R. Perna, and
N. Yoshida. “Constraints on Warm Dark Matter Models from High-Redshift Long Gamma-Ray
Bursts.” Monthly Notices of the Royal Astronomical Society. Oxford University
Press, 2013. https://doi.org/10.1093/mnras/stt674.
ieee: R. S. de Souza, A. Mesinger, A. Ferrara, Z. Haiman, R. Perna, and N. Yoshida,
“Constraints on warm dark matter models from high-redshift long gamma-ray bursts,”
Monthly Notices of the Royal Astronomical Society, vol. 432, no. 4. Oxford
University Press, pp. 3218–3227, 2013.
ista: de Souza RS, Mesinger A, Ferrara A, Haiman Z, Perna R, Yoshida N. 2013. Constraints
on warm dark matter models from high-redshift long gamma-ray bursts. Monthly Notices
of the Royal Astronomical Society. 432(4), 3218–3227.
mla: de Souza, R. S., et al. “Constraints on Warm Dark Matter Models from High-Redshift
Long Gamma-Ray Bursts.” Monthly Notices of the Royal Astronomical Society,
vol. 432, no. 4, Oxford University Press, 2013, pp. 3218–27, doi:10.1093/mnras/stt674.
short: R.S. de Souza, A. Mesinger, A. Ferrara, Z. Haiman, R. Perna, N. Yoshida,
Monthly Notices of the Royal Astronomical Society 432 (2013) 3218–3227.
date_created: 2024-09-06T07:25:13Z
date_published: 2013-05-09T00:00:00Z
date_updated: 2024-09-24T12:40:52Z
day: '09'
doi: 10.1093/mnras/stt674
extern: '1'
fulldoi: https://doi.org/10.1093/mnras/stt674
intvolume: ' 432'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1093/mnras/stt674
month: '05'
oa: 1
oa_version: Published Version
page: 3218-3227
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
issn:
- 0035-8711
- 1365-2966
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Constraints on warm dark matter models from high-redshift long gamma-ray bursts
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 432
year: '2013'
...
---
_id: '17653'
abstract:
- lang: eng
text: Observations of quasars at redshifts z > 6 reveal that 10^9 Msol supermassive
black holes (SMBHs) had already formed when the Universe was < 0.9 Gyr old. One
hypothesis for the origins of these SMBHs is that they grew from the remnants
of the first generation of massive stars, which formed in low-mass (~ 10^5 to
10^6 Msol) dark matter minihaloes at z > 20. This is the regime where baryonic
streaming motions--the relative velocities of baryons with respect to dark matter
in the early Universe--most strongly inhibit star formation by suppressing gas
infall and cooling. We investigate the impact of this effect on the growth of
the first SMBHs using a suite of high-fidelity, ellipsoidal-collapse Monte Carlo
merger-tree simulations. We find that the suppression of seed BH formation by
the streaming motions significantly reduces the number density of the most massive
BHs at z > 15, but the residual effect at lower redshifts is essentially negligible.
The streaming motions can reduce by a factor of few the number density of the
most luminous quasars at z ~ 10-11, where such objects could be detected by the
James Webb Space Telescope. We conclude, with minor theoretical caveats, that
baryonic streaming motions are unlikely to pose a significant additional obstacle
to the formation of the observed high-redshift quasar SMBHs. Nor do they appreciably
affect the heating and reionization histories of the Universe or the merger rates
of nuclear BHs in the mass and redshift ranges of interest for proposed gravitational-wave
detectors.
article_processing_charge: No
article_type: original
author:
- first_name: Takamitsu L.
full_name: Tanaka, Takamitsu L.
last_name: Tanaka
- first_name: Miao
full_name: Li, Miao
last_name: Li
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
citation:
ama: Tanaka TL, Li M, Haiman Z. The effect of baryonic streaming motions on the
formation of the first supermassive black holes. Monthly Notices of the Royal
Astronomical Society. 2013;435(4):3559-3567. doi:10.1093/mnras/stt1553
apa: Tanaka, T. L., Li, M., & Haiman, Z. (2013). The effect of baryonic streaming
motions on the formation of the first supermassive black holes. Monthly Notices
of the Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/stt1553
chicago: Tanaka, Takamitsu L., Miao Li, and Zoltán Haiman. “The Effect of Baryonic
Streaming Motions on the Formation of the First Supermassive Black Holes.” Monthly
Notices of the Royal Astronomical Society. Oxford University Press, 2013.
https://doi.org/10.1093/mnras/stt1553.
ieee: T. L. Tanaka, M. Li, and Z. Haiman, “The effect of baryonic streaming motions
on the formation of the first supermassive black holes,” Monthly Notices of
the Royal Astronomical Society, vol. 435, no. 4. Oxford University Press,
pp. 3559–3567, 2013.
ista: Tanaka TL, Li M, Haiman Z. 2013. The effect of baryonic streaming motions
on the formation of the first supermassive black holes. Monthly Notices of the
Royal Astronomical Society. 435(4), 3559–3567.
mla: Tanaka, Takamitsu L., et al. “The Effect of Baryonic Streaming Motions on the
Formation of the First Supermassive Black Holes.” Monthly Notices of the Royal
Astronomical Society, vol. 435, no. 4, Oxford University Press, 2013, pp.
3559–67, doi:10.1093/mnras/stt1553.
short: T.L. Tanaka, M. Li, Z. Haiman, Monthly Notices of the Royal Astronomical
Society 435 (2013) 3559–3567.
date_created: 2024-09-06T07:31:32Z
date_published: 2013-09-10T00:00:00Z
date_updated: 2024-09-24T13:26:36Z
day: '10'
doi: 10.1093/mnras/stt1553
extern: '1'
fulldoi: https://doi.org/10.1093/mnras/stt1553
intvolume: ' 435'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1093/mnras/stt1553
month: '09'
oa: 1
oa_version: Published Version
page: 3559-3567
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
issn:
- 1365-2966
- 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: The effect of baryonic streaming motions on the formation of the first supermassive
black holes
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 435
year: '2013'
...
---
_id: '17657'
abstract:
- lang: eng
text: We present observations of a luminous galaxy at z = 6.573—the end of the reionization
epoch—which has been spectroscopically confirmed twice. The first spectroscopic
confirmation comes from slitless Hubble Space Telescope Advanced Camera for Surveys
grism spectra from the PEARS survey (Probing Evolution And Reionization Spectroscopically),
which show a dramatic continuum break in the spectrum at rest frame 1216 Å. The
second confirmation is done with Keck + DEIMOS. The continuum is not clearly detected
with ground-based spectra, but high wavelength resolution enables the Lyα emission
line profile to be determined. We compare the line profile to composite line profiles
at z = 4.5. The Lyα line profile shows no signature of a damping wing attenuation,
confirming that the intergalactic gas is ionized at z = 6.57. Spectra of Lyman
breaks at yet higher redshifts will be possible using comparably deep observations
with IR-sensitive grisms, even at redshifts where Lyα is too attenuated by the
neutral intergalactic medium to be detectable using traditional spectroscopy from
the ground.
article_number: '32'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: James E.
full_name: Rhoads, James E.
last_name: Rhoads
- first_name: Sangeeta
full_name: Malhotra, Sangeeta
last_name: Malhotra
- first_name: Daniel
full_name: Stern, Daniel
last_name: Stern
- first_name: Mark
full_name: Dickinson, Mark
last_name: Dickinson
- first_name: Norbert
full_name: Pirzkal, Norbert
last_name: Pirzkal
- first_name: Hyron
full_name: Spinrad, Hyron
last_name: Spinrad
- first_name: Naveen
full_name: Reddy, Naveen
last_name: Reddy
- first_name: Nimish
full_name: Hathi, Nimish
last_name: Hathi
- first_name: Norman
full_name: Grogin, Norman
last_name: Grogin
- first_name: Anton
full_name: Koekemoer, Anton
last_name: Koekemoer
- first_name: Michael A.
full_name: Peth, Michael A.
last_name: Peth
- first_name: Seth
full_name: Cohen, Seth
last_name: Cohen
- first_name: Zhenya
full_name: Zheng, Zhenya
last_name: Zheng
- first_name: Tamas
full_name: Budavari, Tamas
last_name: Budavari
- first_name: Ignacio
full_name: Ferreras, Ignacio
last_name: Ferreras
- first_name: Jonathan P.
full_name: Gardner, Jonathan P.
last_name: Gardner
- first_name: Caryl
full_name: Gronwall, Caryl
last_name: Gronwall
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Martin
full_name: Kümmel, Martin
last_name: Kümmel
- first_name: Gerhardt
full_name: Meurer, Gerhardt
last_name: Meurer
- first_name: Leonidas
full_name: Moustakas, Leonidas
last_name: Moustakas
- first_name: Nino
full_name: Panagia, Nino
last_name: Panagia
- first_name: Anna
full_name: Pasquali, Anna
last_name: Pasquali
- first_name: Kailash
full_name: Sahu, Kailash
last_name: Sahu
- first_name: Sperello
full_name: di Serego Alighieri, Sperello
last_name: di Serego Alighieri
- first_name: Rachel
full_name: Somerville, Rachel
last_name: Somerville
- first_name: Amber
full_name: Straughn, Amber
last_name: Straughn
- first_name: Jeremy
full_name: Walsh, Jeremy
last_name: Walsh
- first_name: Rogier
full_name: Windhorst, Rogier
last_name: Windhorst
- first_name: Chun
full_name: Xu, Chun
last_name: Xu
- first_name: Haojing
full_name: Yan, Haojing
last_name: Yan
citation:
ama: Rhoads JE, Malhotra S, Stern D, et al. A Lyman break galaxy in the epoch of
reionization from hubble space telescope grism spectroscopy. The Astrophysical
Journal. 2013;773(1). doi:10.1088/0004-637x/773/1/32
apa: Rhoads, J. E., Malhotra, S., Stern, D., Dickinson, M., Pirzkal, N., Spinrad,
H., … Yan, H. (2013). A Lyman break galaxy in the epoch of reionization from hubble
space telescope grism spectroscopy. The Astrophysical Journal. American
Astronomical Society. https://doi.org/10.1088/0004-637x/773/1/32
chicago: Rhoads, James E., Sangeeta Malhotra, Daniel Stern, Mark Dickinson, Norbert
Pirzkal, Hyron Spinrad, Naveen Reddy, et al. “A Lyman Break Galaxy in the Epoch
of Reionization from Hubble Space Telescope Grism Spectroscopy.” The Astrophysical
Journal. American Astronomical Society, 2013. https://doi.org/10.1088/0004-637x/773/1/32.
ieee: J. E. Rhoads et al., “A Lyman break galaxy in the epoch of reionization
from hubble space telescope grism spectroscopy,” The Astrophysical Journal,
vol. 773, no. 1. American Astronomical Society, 2013.
ista: Rhoads JE, Malhotra S, Stern D, Dickinson M, Pirzkal N, Spinrad H, Reddy N,
Hathi N, Grogin N, Koekemoer A, Peth MA, Cohen S, Zheng Z, Budavari T, Ferreras
I, Gardner JP, Gronwall C, Haiman Z, Kümmel M, Meurer G, Moustakas L, Panagia
N, Pasquali A, Sahu K, di Serego Alighieri S, Somerville R, Straughn A, Walsh
J, Windhorst R, Xu C, Yan H. 2013. A Lyman break galaxy in the epoch of reionization
from hubble space telescope grism spectroscopy. The Astrophysical Journal. 773(1),
32.
mla: Rhoads, James E., et al. “A Lyman Break Galaxy in the Epoch of Reionization
from Hubble Space Telescope Grism Spectroscopy.” The Astrophysical Journal,
vol. 773, no. 1, 32, American Astronomical Society, 2013, doi:10.1088/0004-637x/773/1/32.
short: J.E. Rhoads, S. Malhotra, D. Stern, M. Dickinson, N. Pirzkal, H. Spinrad,
N. Reddy, N. Hathi, N. Grogin, A. Koekemoer, M.A. Peth, S. Cohen, Z. Zheng, T.
Budavari, I. Ferreras, J.P. Gardner, C. Gronwall, Z. Haiman, M. Kümmel, G. Meurer,
L. Moustakas, N. Panagia, A. Pasquali, K. Sahu, S. di Serego Alighieri, R. Somerville,
A. Straughn, J. Walsh, R. Windhorst, C. Xu, H. Yan, The Astrophysical Journal
773 (2013).
date_created: 2024-09-06T07:35:50Z
date_published: 2013-07-22T00:00:00Z
date_updated: 2024-09-25T07:11:08Z
day: '22'
doi: 10.1088/0004-637x/773/1/32
extern: '1'
external_id:
arxiv:
- '1302.7005'
fulldoi: https://doi.org/10.1088/0004-637x/773/1/32
intvolume: ' 773'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.1302.7005'
month: '07'
oa: 1
oa_version: Preprint
publication: The Astrophysical Journal
publication_identifier:
issn:
- 0004-637X
- 1538-4357
publication_status: published
publisher: American Astronomical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: A Lyman break galaxy in the epoch of reionization from hubble space telescope
grism spectroscopy
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 773
year: '2013'
...