---
OA_type: closed access
_id: '19075'
abstract:
- lang: eng
text: Thermoelectric (TE) materials can convert the heat produced during biochemical
reactions into electrical signals, enabling the self-powered detection of biomarkers.
In this work, we design and fabricate a simple Ag2Se nanofilm-based TE biosensor
to precisely quantify hydrogen peroxide (H2O2) levels in liquid samples. A chemical
reaction involving horseradish peroxidase, ABTS and H2O2 in the specimens produces
a photothermal agent—ABTS (2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid))
free radical, which triggers the heat fluctuations at the TE sensor through the
photo-thermal effect, eventually enabling the sensing of H2O2. Consequently, the
constructed sensor can achieve a detection limit of 0.26 μM by a three-leg TE
device design. Further investigations suggest that the application of our TE sensor
can be extended in testing H2O2 in beverages (including milk, soda water, and
lemonade) and evaluating the load of bacterial pathogens relevant to dental diseases
and infections including Streptococcus sanguinis and Methicillin-resistant Staphylococcus
aureus with high analytical accuracy. This strategy utilizes the combination of
high thermoelectric performance with chemical reactions to realize a straightforward
and accurate biomarker detection method, making it suitable for applications in
medical diagnostics, personalized health monitoring, and the food industry.
acknowledgement: This work was supported by the Sichuan Science and Technology Program
(Grant No. 2023YFG0220, 2023ZYD0064, and 2024YFHZ0309) and the Fundamental Research
Funds for the Central Universities and Research Funding from West China School/Hospital
of Stomatology Sichuan University, No. QDJF2022-2.
article_processing_charge: No
article_type: original
author:
- first_name: Huangshui
full_name: Ma, Huangshui
last_name: Ma
- first_name: Shiyu
full_name: Pu, Shiyu
last_name: Pu
- first_name: Shiyu
full_name: Jia, Shiyu
last_name: Jia
- first_name: Shengduo
full_name: Xu, Shengduo
id: 12ab8624-4c8a-11ec-9e11-e1ac2438f22f
last_name: Xu
- first_name: Qiwei
full_name: Yu, Qiwei
last_name: Yu
- first_name: Lei
full_name: Yang, Lei
last_name: Yang
- first_name: Hao
full_name: Wu, Hao
last_name: Wu
- first_name: Qiang
full_name: Sun, Qiang
last_name: Sun
citation:
ama: Ma H, Pu S, Jia S, et al. Laser-assisted thermoelectric-enhanced hydrogen peroxide
biosensors based on Ag2Se nanofilms for sensitive detection of bacterial pathogens.
Nanoscale. 2025;17(10):5858-5868. doi:10.1039/d4nr04860a
apa: Ma, H., Pu, S., Jia, S., Xu, S., Yu, Q., Yang, L., … Sun, Q. (2025). Laser-assisted
thermoelectric-enhanced hydrogen peroxide biosensors based on Ag2Se nanofilms
for sensitive detection of bacterial pathogens. Nanoscale. Royal Society
of Chemistry. https://doi.org/10.1039/d4nr04860a
chicago: Ma, Huangshui, Shiyu Pu, Shiyu Jia, Shengduo Xu, Qiwei Yu, Lei Yang, Hao
Wu, and Qiang Sun. “Laser-Assisted Thermoelectric-Enhanced Hydrogen Peroxide Biosensors
Based on Ag2Se Nanofilms for Sensitive Detection of Bacterial Pathogens.” Nanoscale.
Royal Society of Chemistry, 2025. https://doi.org/10.1039/d4nr04860a.
ieee: H. Ma et al., “Laser-assisted thermoelectric-enhanced hydrogen peroxide
biosensors based on Ag2Se nanofilms for sensitive detection of bacterial pathogens,”
Nanoscale, vol. 17, no. 10. Royal Society of Chemistry, pp. 5858–5868,
2025.
ista: Ma H, Pu S, Jia S, Xu S, Yu Q, Yang L, Wu H, Sun Q. 2025. Laser-assisted thermoelectric-enhanced
hydrogen peroxide biosensors based on Ag2Se nanofilms for sensitive detection
of bacterial pathogens. Nanoscale. 17(10), 5858–5868.
mla: Ma, Huangshui, et al. “Laser-Assisted Thermoelectric-Enhanced Hydrogen Peroxide
Biosensors Based on Ag2Se Nanofilms for Sensitive Detection of Bacterial Pathogens.”
Nanoscale, vol. 17, no. 10, Royal Society of Chemistry, 2025, pp. 5858–68,
doi:10.1039/d4nr04860a.
short: H. Ma, S. Pu, S. Jia, S. Xu, Q. Yu, L. Yang, H. Wu, Q. Sun, Nanoscale 17
(2025) 5858–5868.
date_created: 2025-02-23T23:01:57Z
date_published: 2025-03-14T00:00:00Z
date_updated: 2025-09-30T10:38:50Z
day: '14'
department:
- _id: MaIb
doi: 10.1039/d4nr04860a
external_id:
isi:
- '001416656400001'
pmid:
- '39927897'
intvolume: ' 17'
isi: 1
issue: '10'
language:
- iso: eng
month: '03'
oa_version: None
page: 5858-5868
pmid: 1
publication: Nanoscale
publication_identifier:
eissn:
- 2040-3372
issn:
- 2040-3364
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Laser-assisted thermoelectric-enhanced hydrogen peroxide biosensors based on
Ag2Se nanofilms for sensitive detection of bacterial pathogens
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 17
year: '2025'
...
---
_id: '13368'
abstract:
- lang: eng
text: Scanning nanoscale superconducting quantum interference devices (nanoSQUIDs)
are of growing interest for highly sensitive quantitative imaging of magnetic,
spintronic, and transport properties of low-dimensional systems. Utilizing specifically
designed grooved quartz capillaries pulled into a sharp pipette, we have fabricated
the smallest SQUID-on-tip (SOT) devices with effective diameters down to 39 nm.
Integration of a resistive shunt in close proximity to the pipette apex combined
with self-aligned deposition of In and Sn, has resulted in SOTs with a flux noise
of 42 nΦ0 Hz−1/2, yielding a record low spin noise of 0.29 μB Hz−1/2. In addition,
the new SOTs function at sub-Kelvin temperatures and in high magnetic fields of
over 2.5 T. Integrating the SOTs into a scanning probe microscope allowed us to
image the stray field of a single Fe3O4 nanocube at 300 mK. Our results show that
the easy magnetization axis direction undergoes a transition from the 〈111〉 direction
at room temperature to an in-plane orientation, which could be attributed to the
Verwey phase transition in Fe3O4.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Y.
full_name: Anahory, Y.
last_name: Anahory
- first_name: H. R.
full_name: Naren, H. R.
last_name: Naren
- first_name: E. O.
full_name: Lachman, E. O.
last_name: Lachman
- first_name: S.
full_name: Buhbut Sinai, S.
last_name: Buhbut Sinai
- first_name: A.
full_name: Uri, A.
last_name: Uri
- first_name: L.
full_name: Embon, L.
last_name: Embon
- first_name: E.
full_name: Yaakobi, E.
last_name: Yaakobi
- first_name: Y.
full_name: Myasoedov, Y.
last_name: Myasoedov
- first_name: M. E.
full_name: Huber, M. E.
last_name: Huber
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
- first_name: E.
full_name: Zeldov, E.
last_name: Zeldov
citation:
ama: Anahory Y, Naren HR, Lachman EO, et al. SQUID-on-tip with single-electron spin
sensitivity for high-field and ultra-low temperature nanomagnetic imaging. Nanoscale.
2020;12(5):3174-3182. doi:10.1039/c9nr08578e
apa: Anahory, Y., Naren, H. R., Lachman, E. O., Buhbut Sinai, S., Uri, A., Embon,
L., … Zeldov, E. (2020). SQUID-on-tip with single-electron spin sensitivity for
high-field and ultra-low temperature nanomagnetic imaging. Nanoscale. Royal
Society of Chemistry. https://doi.org/10.1039/c9nr08578e
chicago: Anahory, Y., H. R. Naren, E. O. Lachman, S. Buhbut Sinai, A. Uri, L. Embon,
E. Yaakobi, et al. “SQUID-on-Tip with Single-Electron Spin Sensitivity for High-Field
and Ultra-Low Temperature Nanomagnetic Imaging.” Nanoscale. Royal Society
of Chemistry, 2020. https://doi.org/10.1039/c9nr08578e.
ieee: Y. Anahory et al., “SQUID-on-tip with single-electron spin sensitivity
for high-field and ultra-low temperature nanomagnetic imaging,” Nanoscale,
vol. 12, no. 5. Royal Society of Chemistry, pp. 3174–3182, 2020.
ista: Anahory Y, Naren HR, Lachman EO, Buhbut Sinai S, Uri A, Embon L, Yaakobi E,
Myasoedov Y, Huber ME, Klajn R, Zeldov E. 2020. SQUID-on-tip with single-electron
spin sensitivity for high-field and ultra-low temperature nanomagnetic imaging.
Nanoscale. 12(5), 3174–3182.
mla: Anahory, Y., et al. “SQUID-on-Tip with Single-Electron Spin Sensitivity for
High-Field and Ultra-Low Temperature Nanomagnetic Imaging.” Nanoscale,
vol. 12, no. 5, Royal Society of Chemistry, 2020, pp. 3174–82, doi:10.1039/c9nr08578e.
short: Y. Anahory, H.R. Naren, E.O. Lachman, S. Buhbut Sinai, A. Uri, L. Embon,
E. Yaakobi, Y. Myasoedov, M.E. Huber, R. Klajn, E. Zeldov, Nanoscale 12 (2020)
3174–3182.
date_created: 2023-08-01T09:37:53Z
date_published: 2020-01-10T00:00:00Z
date_updated: 2023-08-07T10:32:15Z
day: '10'
doi: 10.1039/c9nr08578e
extern: '1'
external_id:
arxiv:
- '2001.03342'
pmid:
- '31967152'
intvolume: ' 12'
issue: '5'
keyword:
- General Materials Science
language:
- iso: eng
main_file_link:
- url: https://doi.org/10.48550/arXiv.2001.03342
month: '01'
oa_version: Preprint
page: 3174-3182
pmid: 1
publication: Nanoscale
publication_identifier:
eissn:
- 2040-3372
issn:
- 2040-3364
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low
temperature nanomagnetic imaging
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 12
year: '2020'
...
---
OA_place: publisher
OA_type: hybrid
_id: '17911'
abstract:
- lang: eng
text: Single-molecule break junction measurements deliver a huge number of conductance
vs. electrode separation traces. During such measurements, the target molecules
may bind to the electrodes in different geometries, and the evolution and rupture
of the single-molecule junction may also follow distinct trajectories. The unraveling
of the various typical trace classes is a prerequisite to the proper physical
interpretation of the data. Here we exploit the efficient feature recognition
properties of neural networks to automatically find the relevant trace classes.
To eliminate the need for manually labeled training data we apply a combined method,
which automatically selects training traces according to the extreme values of
principal component projections or some auxiliary measured quantities. Then the
network captures the features of these characteristic traces and generalizes its
inference to the entire dataset. The use of a simple neural network structure
also enables a direct insight into the decision-making mechanism. We demonstrate
that this combined machine learning method is efficient in the unsupervised recognition
of unobvious, but highly relevant trace classes within low and room temperature
gold–4,4′ bipyridine–gold single-molecule break junction data.
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: András
full_name: Magyarkuti, András
last_name: Magyarkuti
- first_name: Nóra
full_name: Balogh, Nóra
last_name: Balogh
- first_name: Zoltán
full_name: Balogh, Zoltán
last_name: Balogh
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
- first_name: András
full_name: Halbritter, András
last_name: Halbritter
citation:
ama: Magyarkuti A, Balogh N, Balogh Z, Venkataraman L, Halbritter A. Unsupervised
feature recognition in single-molecule break junction data. Nanoscale.
2020;12(15):8355-8363. doi:10.1039/d0nr00467g
apa: Magyarkuti, A., Balogh, N., Balogh, Z., Venkataraman, L., & Halbritter,
A. (2020). Unsupervised feature recognition in single-molecule break junction
data. Nanoscale. Royal Society of Chemistry. https://doi.org/10.1039/d0nr00467g
chicago: Magyarkuti, András, Nóra Balogh, Zoltán Balogh, Latha Venkataraman, and
András Halbritter. “Unsupervised Feature Recognition in Single-Molecule Break
Junction Data.” Nanoscale. Royal Society of Chemistry, 2020. https://doi.org/10.1039/d0nr00467g.
ieee: A. Magyarkuti, N. Balogh, Z. Balogh, L. Venkataraman, and A. Halbritter, “Unsupervised
feature recognition in single-molecule break junction data,” Nanoscale,
vol. 12, no. 15. Royal Society of Chemistry, pp. 8355–8363, 2020.
ista: Magyarkuti A, Balogh N, Balogh Z, Venkataraman L, Halbritter A. 2020. Unsupervised
feature recognition in single-molecule break junction data. Nanoscale. 12(15),
8355–8363.
mla: Magyarkuti, András, et al. “Unsupervised Feature Recognition in Single-Molecule
Break Junction Data.” Nanoscale, vol. 12, no. 15, Royal Society of Chemistry,
2020, pp. 8355–63, doi:10.1039/d0nr00467g.
short: A. Magyarkuti, N. Balogh, Z. Balogh, L. Venkataraman, A. Halbritter, Nanoscale
12 (2020) 8355–8363.
date_created: 2024-09-09T07:21:34Z
date_published: 2020-03-25T00:00:00Z
date_updated: 2024-12-10T12:13:16Z
day: '25'
doi: 10.1039/d0nr00467g
extern: '1'
external_id:
arxiv:
- '2001.03006'
intvolume: ' 12'
issue: '15'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc/3.0/
main_file_link:
- open_access: '1'
url: https://doi.org/10.1039/D0NR00467G
month: '03'
oa: 1
oa_version: Published Version
page: 8355-8363
publication: Nanoscale
publication_identifier:
eissn:
- 2040-3372
issn:
- 2040-3364
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Unsupervised feature recognition in single-molecule break junction data
tmp:
image: /images/cc_by_nc.png
legal_code_url: https://creativecommons.org/licenses/by-nc/3.0/legalcode
name: Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
short: CC BY-NC (3.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 12
year: '2020'
...
---
_id: '13341'
abstract:
- lang: eng
text: "Scanning nanoscale superconducting quantum interference devices (nanoSQUIDs)\r\nare
of growing interest for highly sensitive quantitative imaging of magnetic,\r\nspintronic,
and transport properties of low-dimensional systems. Utilizing\r\nspecifically
designed grooved quartz capillaries pulled into a sharp pipette,\r\nwe have fabricated
the smallest SQUID-on-tip (SOT) devices with effective\r\ndiameters down to 39
nm. Integration of a resistive shunt in close proximity to\r\nthe pipette apex
combined with self-aligned deposition of In and Sn, have\r\nresulted in SOT with
a flux noise of 42 n$\\Phi_0$Hz$^{-1/2}$, yielding a record\r\nlow spin noise
of 0.29 $\\mu_B$Hz$^{-1/2}$. In addition, the new SOTs function\r\nat sub-Kelvin
temperatures and in high magnetic fields of over 2.5 T.\r\nIntegrating the SOTs
into a scanning probe microscope allowed us to image the\r\nstray field of a single
Fe$_3$O$_4$ nanocube at 300 mK. Our results show that\r\nthe easy magnetization
axis direction undergoes a transition from the (111)\r\ndirection at room temperature
to an in-plane orientation, which could be\r\nattributed to the Verwey phase transition
in Fe$_3$O$_4$."
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Y.
full_name: Anahory, Y.
last_name: Anahory
- first_name: H. R.
full_name: Naren, H. R.
last_name: Naren
- first_name: E. O.
full_name: Lachman, E. O.
last_name: Lachman
- first_name: S. Buhbut
full_name: Sinai, S. Buhbut
last_name: Sinai
- first_name: A.
full_name: Uri, A.
last_name: Uri
- first_name: L.
full_name: Embon, L.
last_name: Embon
- first_name: E.
full_name: Yaakobi, E.
last_name: Yaakobi
- first_name: Y.
full_name: Myasoedov, Y.
last_name: Myasoedov
- first_name: M. E.
full_name: Huber, M. E.
last_name: Huber
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
- first_name: E.
full_name: Zeldov, E.
last_name: Zeldov
citation:
ama: Anahory Y, Naren HR, Lachman EO, et al. SQUID-on-tip with single-electron spin
sensitivity for high-field and ultra-low temperature nanomagnetic imaging. Nanoscale.
2020;12(5):3174-3182. doi:10.1039/C9NR08578E
apa: Anahory, Y., Naren, H. R., Lachman, E. O., Sinai, S. B., Uri, A., Embon, L.,
… Zeldov, E. (2020). SQUID-on-tip with single-electron spin sensitivity for high-field
and ultra-low temperature nanomagnetic imaging. Nanoscale. Royal Society
of Chemistry. https://doi.org/10.1039/C9NR08578E
chicago: Anahory, Y., H. R. Naren, E. O. Lachman, S. Buhbut Sinai, A. Uri, L. Embon,
E. Yaakobi, et al. “SQUID-on-Tip with Single-Electron Spin Sensitivity for High-Field
and Ultra-Low Temperature Nanomagnetic Imaging.” Nanoscale. Royal Society
of Chemistry, 2020. https://doi.org/10.1039/C9NR08578E.
ieee: Y. Anahory et al., “SQUID-on-tip with single-electron spin sensitivity
for high-field and ultra-low temperature nanomagnetic imaging,” Nanoscale,
vol. 12, no. 5. Royal Society of Chemistry, pp. 3174–3182, 2020.
ista: Anahory Y, Naren HR, Lachman EO, Sinai SB, Uri A, Embon L, Yaakobi E, Myasoedov
Y, Huber ME, Klajn R, Zeldov E. 2020. SQUID-on-tip with single-electron spin sensitivity
for high-field and ultra-low temperature nanomagnetic imaging. Nanoscale. 12(5),
3174–3182.
mla: Anahory, Y., et al. “SQUID-on-Tip with Single-Electron Spin Sensitivity for
High-Field and Ultra-Low Temperature Nanomagnetic Imaging.” Nanoscale,
vol. 12, no. 5, Royal Society of Chemistry, 2020, pp. 3174–82, doi:10.1039/C9NR08578E.
short: Y. Anahory, H.R. Naren, E.O. Lachman, S.B. Sinai, A. Uri, L. Embon, E. Yaakobi,
Y. Myasoedov, M.E. Huber, R. Klajn, E. Zeldov, Nanoscale 12 (2020) 3174–3182.
date_created: 2023-08-01T08:27:12Z
date_published: 2020-01-10T00:00:00Z
date_updated: 2023-08-02T09:35:52Z
day: '10'
doi: 10.1039/C9NR08578E
extern: '1'
external_id:
arxiv:
- '2001.03342'
intvolume: ' 12'
issue: '5'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2001.03342
month: '01'
oa: 1
oa_version: Preprint
page: 3174-3182
publication: Nanoscale
publication_identifier:
eissn:
- 2040-3372
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low
temperature nanomagnetic imaging
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 12
year: '2020'
...
---
OA_type: closed access
_id: '17932'
abstract:
- lang: eng
text: We compare the ultrafast charge transfer dynamics of molecules on epitaxial
graphene and bilayer graphene grown on Ni(111) interfaces through first principles
calculations and X-ray resonant photoemission spectroscopy. We use 4,4′-bipyridine
as a prototypical molecule for these explorations as the energy level alignment
of core-excited molecular orbitals allows ultrafast injection of electrons from
a substrate to a molecule on a femtosecond timescale. We show that the ultrafast
injection of electrons from the substrate to the molecule is ∼4 times slower on
weakly coupled bilayer graphene than on epitaxial graphene. Through our experiments
and calculations, we can attribute this to a difference in the density of states
close to the Fermi level between graphene and bilayer graphene. We therefore show
how graphene coupling with the substrate influences charge transfer dynamics between
organic molecules and graphene interfaces.
article_processing_charge: No
article_type: original
author:
- first_name: Abhilash
full_name: Ravikumar, Abhilash
last_name: Ravikumar
- first_name: Gregor
full_name: Kladnik, Gregor
last_name: Kladnik
- first_name: Moritz
full_name: Müller, Moritz
last_name: Müller
- first_name: Albano
full_name: Cossaro, Albano
last_name: Cossaro
- first_name: Gregor
full_name: Bavdek, Gregor
last_name: Bavdek
- first_name: Laerte L.
full_name: Patera, Laerte L.
last_name: Patera
- first_name: Daniel
full_name: Sánchez-Portal, Daniel
last_name: Sánchez-Portal
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
- first_name: Alberto
full_name: Morgante, Alberto
last_name: Morgante
- first_name: Gian Paolo
full_name: Brivio, Gian Paolo
last_name: Brivio
- first_name: Dean
full_name: Cvetko, Dean
last_name: Cvetko
- first_name: Guido
full_name: Fratesi, Guido
last_name: Fratesi
citation:
ama: Ravikumar A, Kladnik G, Müller M, et al. Tuning ultrafast electron injection
dynamics at organic-graphene/metal interfaces. Nanoscale. 2018;10(17):8014-8022.
doi:10.1039/c7nr08737c
apa: Ravikumar, A., Kladnik, G., Müller, M., Cossaro, A., Bavdek, G., Patera, L.
L., … Fratesi, G. (2018). Tuning ultrafast electron injection dynamics at organic-graphene/metal
interfaces. Nanoscale. Royal Society of Chemistry. https://doi.org/10.1039/c7nr08737c
chicago: Ravikumar, Abhilash, Gregor Kladnik, Moritz Müller, Albano Cossaro, Gregor
Bavdek, Laerte L. Patera, Daniel Sánchez-Portal, et al. “Tuning Ultrafast Electron
Injection Dynamics at Organic-Graphene/Metal Interfaces.” Nanoscale. Royal
Society of Chemistry, 2018. https://doi.org/10.1039/c7nr08737c.
ieee: A. Ravikumar et al., “Tuning ultrafast electron injection dynamics
at organic-graphene/metal interfaces,” Nanoscale, vol. 10, no. 17. Royal
Society of Chemistry, pp. 8014–8022, 2018.
ista: Ravikumar A, Kladnik G, Müller M, Cossaro A, Bavdek G, Patera LL, Sánchez-Portal
D, Venkataraman L, Morgante A, Brivio GP, Cvetko D, Fratesi G. 2018. Tuning ultrafast
electron injection dynamics at organic-graphene/metal interfaces. Nanoscale. 10(17),
8014–8022.
mla: Ravikumar, Abhilash, et al. “Tuning Ultrafast Electron Injection Dynamics at
Organic-Graphene/Metal Interfaces.” Nanoscale, vol. 10, no. 17, Royal Society
of Chemistry, 2018, pp. 8014–22, doi:10.1039/c7nr08737c.
short: A. Ravikumar, G. Kladnik, M. Müller, A. Cossaro, G. Bavdek, L.L. Patera,
D. Sánchez-Portal, L. Venkataraman, A. Morgante, G.P. Brivio, D. Cvetko, G. Fratesi,
Nanoscale 10 (2018) 8014–8022.
date_created: 2024-09-09T08:19:10Z
date_published: 2018-03-26T00:00:00Z
date_updated: 2024-12-11T08:56:09Z
day: '26'
doi: 10.1039/c7nr08737c
extern: '1'
external_id:
pmid:
- '29667672'
intvolume: ' 10'
issue: '17'
language:
- iso: eng
month: '03'
oa_version: None
page: 8014-8022
pmid: 1
publication: Nanoscale
publication_identifier:
eissn:
- 2040-3372
issn:
- 2040-3364
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Tuning ultrafast electron injection dynamics at organic-graphene/metal interfaces
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 10
year: '2018'
...
---
OA_place: publisher
OA_type: hybrid
_id: '17933'
abstract:
- lang: eng
text: Break-junction measurements are typically aimed at characterizing electronic
properties of single molecules bound between two metal electrodes. Although these
measurements have provided structure–function relationships for such devices,
there is little work that studies the impact of molecule-molecule interactions
on junction characteristics. Here, we use a scanning tunneling microscope based
break-junction technique to study pi-stacked dimer junctions formed with two amine-terminated
conjugated molecules. We show that the conductance, force and flicker noise of
such dimers differ dramatically when compared with the corresponding monomer junctions
and discuss the implications of these results on intra- and inter-molecular charge
transport.
article_processing_charge: No
article_type: original
author:
- first_name: András
full_name: Magyarkuti, András
last_name: Magyarkuti
- first_name: Olgun
full_name: Adak, Olgun
last_name: Adak
- first_name: Andras
full_name: Halbritter, Andras
last_name: Halbritter
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: Magyarkuti A, Adak O, Halbritter A, Venkataraman L. Electronic and mechanical
characteristics of stacked dimer molecular junctions. Nanoscale. 2018;10(7):3362-3368.
doi:10.1039/c7nr08354h
apa: Magyarkuti, A., Adak, O., Halbritter, A., & Venkataraman, L. (2018). Electronic
and mechanical characteristics of stacked dimer molecular junctions. Nanoscale.
Royal Society of Chemistry. https://doi.org/10.1039/c7nr08354h
chicago: Magyarkuti, András, Olgun Adak, Andras Halbritter, and Latha Venkataraman.
“Electronic and Mechanical Characteristics of Stacked Dimer Molecular Junctions.”
Nanoscale. Royal Society of Chemistry, 2018. https://doi.org/10.1039/c7nr08354h.
ieee: A. Magyarkuti, O. Adak, A. Halbritter, and L. Venkataraman, “Electronic and
mechanical characteristics of stacked dimer molecular junctions,” Nanoscale,
vol. 10, no. 7. Royal Society of Chemistry, pp. 3362–3368, 2018.
ista: Magyarkuti A, Adak O, Halbritter A, Venkataraman L. 2018. Electronic and mechanical
characteristics of stacked dimer molecular junctions. Nanoscale. 10(7), 3362–3368.
mla: Magyarkuti, András, et al. “Electronic and Mechanical Characteristics of Stacked
Dimer Molecular Junctions.” Nanoscale, vol. 10, no. 7, Royal Society of
Chemistry, 2018, pp. 3362–68, doi:10.1039/c7nr08354h.
short: A. Magyarkuti, O. Adak, A. Halbritter, L. Venkataraman, Nanoscale 10 (2018)
3362–3368.
date_created: 2024-09-09T08:30:14Z
date_published: 2018-01-09T00:00:00Z
date_updated: 2024-12-17T10:00:20Z
day: '09'
doi: 10.1039/c7nr08354h
extern: '1'
external_id:
pmid:
- '29388658'
intvolume: ' 10'
issue: '7'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: "DOI\thttps://doi.org/10.1039/C7NR08354H"
month: '01'
oa: 1
oa_version: Published Version
page: 3362-3368
pmid: 1
publication: Nanoscale
publication_identifier:
eissn:
- 2040-3372
issn:
- 2040-3364
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Electronic and mechanical characteristics of stacked dimer molecular junctions
tmp:
image: /images/cc_by_nc.png
legal_code_url: https://creativecommons.org/licenses/by-nc/3.0/legalcode
name: Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
short: CC BY-NC (3.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 10
year: '2018'
...
---
_id: '13385'
abstract:
- lang: eng
text: Novel light-responsive nanoparticles were synthesized by decorating the surfaces
of gold and silver nanoparticles with a nitrospiropyran molecular photoswitch.
Upon exposure to UV light in nonpolar solvents, these nanoparticles self-assembled
to afford spherical aggregates, which disassembled rapidly when the UV stimulus
was turned off. The sizes of these aggregates depended on the nanoparticle concentration,
and their lifetimes could be controlled by adjusting the surface concentration
of nitrospiropyran on the nanoparticles. The conformational flexibility of nitrospiropyran,
which was altered by modifying the structure of the background ligand, had a profound
impact on the self-assembly process. By coating the nanoparticles with a spiropyran
lacking the nitro group, a conceptually different self-assembly system, relying
on a reversible proton transfer, was realized. The resulting particles spontaneously
(in the dark) assembled into aggregates that could be readily disassembled upon
exposure to blue light.
article_processing_charge: No
article_type: original
author:
- first_name: Pintu K.
full_name: Kundu, Pintu K.
last_name: Kundu
- first_name: Sanjib
full_name: Das, Sanjib
last_name: Das
- first_name: Johannes
full_name: Ahrens, Johannes
last_name: Ahrens
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Kundu PK, Das S, Ahrens J, Klajn R. Controlling the lifetimes of dynamic nanoparticle
aggregates by spiropyran functionalization. Nanoscale. 2016;8(46):19280-19286.
doi:10.1039/c6nr05959g
apa: Kundu, P. K., Das, S., Ahrens, J., & Klajn, R. (2016). Controlling the
lifetimes of dynamic nanoparticle aggregates by spiropyran functionalization.
Nanoscale. Royal Society of Chemistry. https://doi.org/10.1039/c6nr05959g
chicago: Kundu, Pintu K., Sanjib Das, Johannes Ahrens, and Rafal Klajn. “Controlling
the Lifetimes of Dynamic Nanoparticle Aggregates by Spiropyran Functionalization.”
Nanoscale. Royal Society of Chemistry, 2016. https://doi.org/10.1039/c6nr05959g.
ieee: P. K. Kundu, S. Das, J. Ahrens, and R. Klajn, “Controlling the lifetimes of
dynamic nanoparticle aggregates by spiropyran functionalization,” Nanoscale,
vol. 8, no. 46. Royal Society of Chemistry, pp. 19280–19286, 2016.
ista: Kundu PK, Das S, Ahrens J, Klajn R. 2016. Controlling the lifetimes of dynamic
nanoparticle aggregates by spiropyran functionalization. Nanoscale. 8(46), 19280–19286.
mla: Kundu, Pintu K., et al. “Controlling the Lifetimes of Dynamic Nanoparticle
Aggregates by Spiropyran Functionalization.” Nanoscale, vol. 8, no. 46,
Royal Society of Chemistry, 2016, pp. 19280–86, doi:10.1039/c6nr05959g.
short: P.K. Kundu, S. Das, J. Ahrens, R. Klajn, Nanoscale 8 (2016) 19280–19286.
date_created: 2023-08-01T09:42:22Z
date_published: 2016-10-19T00:00:00Z
date_updated: 2024-10-14T12:16:21Z
day: '19'
doi: 10.1039/c6nr05959g
extern: '1'
external_id:
pmid:
- '27830865'
intvolume: ' 8'
issue: '46'
keyword:
- General Materials Science
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1039/C6NR05959G
month: '10'
oa: 1
oa_version: Published Version
page: 19280-19286
pmid: 1
publication: Nanoscale
publication_identifier:
eissn:
- 2040-3372
issn:
- 2040-3364
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Controlling the lifetimes of dynamic nanoparticle aggregates by spiropyran
functionalization
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 8
year: '2016'
...
---
OA_place: publisher
OA_type: hybrid
_id: '17955'
abstract:
- lang: eng
text: The development of molecular components functioning as switches, rectifiers
or amplifiers is a great challenge in molecular electronics. A desirable property
of such components is functional robustness, meaning that the intrinsic functionality
of components must be preserved regardless of the strategy used to integrate them
into the final assemblies. Here, this issue is investigated for molecular diodes
based on N-phenylbenzamide (NPBA) backbones. The transport properties of molecular
junctions derived from NPBA are characterized while varying the nature of the
functional groups interfacing the backbone and the gold electrodes required for
break-junction measurements. Combining experimental and theoretical methods, it
is shown that at low bias (<0.85 V) transport is determined by the same frontier
molecular orbital originating from the NPBA core, regardless of the anchoring
group employed. The magnitude of rectification, however, is strongly dependent
on the strength of the electronic coupling at the gold–NPBA interface and on the
spatial distribution of the local density of states of the dominant transport
channel of the molecular junction.
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Matthieu
full_name: Koepf, Matthieu
last_name: Koepf
- first_name: Christopher
full_name: Koenigsmann, Christopher
last_name: Koenigsmann
- first_name: Wendu
full_name: Ding, Wendu
last_name: Ding
- first_name: Arunbah
full_name: Batra, Arunbah
last_name: Batra
- first_name: Christian F. A.
full_name: Negre, Christian F. A.
last_name: Negre
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
- first_name: Gary W.
full_name: Brudvig, Gary W.
last_name: Brudvig
- first_name: Victor S.
full_name: Batista, Victor S.
last_name: Batista
- first_name: Charles A.
full_name: Schmuttenmaer, Charles A.
last_name: Schmuttenmaer
- first_name: Robert H.
full_name: Crabtree, Robert H.
last_name: Crabtree
citation:
ama: Koepf M, Koenigsmann C, Ding W, et al. Controlling the rectification properties
of molecular junctions through molecule–electrode coupling. Nanoscale.
2016;8(36):16357-16362. doi:10.1039/c6nr04830g
apa: Koepf, M., Koenigsmann, C., Ding, W., Batra, A., Negre, C. F. A., Venkataraman,
L., … Crabtree, R. H. (2016). Controlling the rectification properties of molecular
junctions through molecule–electrode coupling. Nanoscale. Royal Society
of Chemistry. https://doi.org/10.1039/c6nr04830g
chicago: Koepf, Matthieu, Christopher Koenigsmann, Wendu Ding, Arunbah Batra, Christian
F. A. Negre, Latha Venkataraman, Gary W. Brudvig, Victor S. Batista, Charles A.
Schmuttenmaer, and Robert H. Crabtree. “Controlling the Rectification Properties
of Molecular Junctions through Molecule–Electrode Coupling.” Nanoscale.
Royal Society of Chemistry, 2016. https://doi.org/10.1039/c6nr04830g.
ieee: M. Koepf et al., “Controlling the rectification properties of molecular
junctions through molecule–electrode coupling,” Nanoscale, vol. 8, no.
36. Royal Society of Chemistry, pp. 16357–16362, 2016.
ista: Koepf M, Koenigsmann C, Ding W, Batra A, Negre CFA, Venkataraman L, Brudvig
GW, Batista VS, Schmuttenmaer CA, Crabtree RH. 2016. Controlling the rectification
properties of molecular junctions through molecule–electrode coupling. Nanoscale.
8(36), 16357–16362.
mla: Koepf, Matthieu, et al. “Controlling the Rectification Properties of Molecular
Junctions through Molecule–Electrode Coupling.” Nanoscale, vol. 8, no.
36, Royal Society of Chemistry, 2016, pp. 16357–62, doi:10.1039/c6nr04830g.
short: M. Koepf, C. Koenigsmann, W. Ding, A. Batra, C.F.A. Negre, L. Venkataraman,
G.W. Brudvig, V.S. Batista, C.A. Schmuttenmaer, R.H. Crabtree, Nanoscale 8 (2016)
16357–16362.
date_created: 2024-09-09T09:23:39Z
date_published: 2016-08-16T00:00:00Z
date_updated: 2024-12-18T08:50:22Z
day: '16'
doi: 10.1039/c6nr04830g
extern: '1'
intvolume: ' 8'
issue: '36'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1039/C6NR04830G
month: '08'
oa: 1
oa_version: Published Version
page: 16357-16362
publication: Nanoscale
publication_identifier:
eissn:
- 2040-3372
issn:
- 2040-3364
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Controlling the rectification properties of molecular junctions through molecule–electrode
coupling
tmp:
image: /images/cc_by_nc.png
legal_code_url: https://creativecommons.org/licenses/by-nc/3.0/legalcode
name: Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
short: CC BY-NC (3.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 8
year: '2016'
...