---
_id: '357'
abstract:
- lang: eng
text: 'Near-resonant Raman scattering measurements of zinc sulfide nanoparticles
and thin films have been made and correlated to grain and particle size, respectively,
using a 325 nm wavelength excitation source. The area ratios between the first,
second, and third order peaks of ZnS identified as the T 2(LO) mode decrease with
increasing ZnS grain size. This is an effect attributed to changes in the bandgap
energy from quantum confinement due to the varying grain size between the films/particles,
as noted by a shift in the room temperature photoluminescence emission corresponding
to the free exciton emission energy. While Raman scattering spectroscopy is typically
limited to identification of phases and their crystalline properties, it is possible
to attain more than such straightforward information by calibrating the spectral
features to variations between sets of samples. These results open the possibility
of making a quantitative grain size estimation in ZnS thin films and nanostructures,
as well as in other material systems where ZnS may be expected as a secondary
phase, such as Cu2ZnSnS4. Additionally, more commonly used excitation wavelengths
for Raman scattering, such as 514 and 532 nm, are shown to be of limited use in
characterizing ZnS thin films due to the extremely low Raman scattering efficiency
of ZnS in films with sub-micron thicknesses. '
acknowledgement: "This research was supported by the People Programme\r\n(Marie Curie
Actions) of the European Union's Seventh Framework\r\nProgramme under REA grant
agreement number 269167\r\n(PVICOKEST) and the Spanish Ministerio de Economía y\r\nCompetividad
(MINECO) under KEST-PV (ref. ENE2010-\r\n121541-C03-01/02). Authors from IREC belong
to the M-2E\r\n(Electronic Materials for Energy) Consolidated Research\r\nGroup
and the XaRMAE Network of Excellence on Materials\r\nfor Energy of the “Generalitat
de Catalunya”. A. Fairbrother\r\nthanks the MINECO for support via the FPU program\r\n(FPU12/05508),
V. Izquierdo for the Juan de la Cierva program\r\n(JCI-2011-10782), and E. Saucedo
for the Ramón y Cajal\r\nprogram (RYC-2011-09212)."
article_processing_charge: No
article_type: original
author:
- first_name: Andrew
full_name: Fairbrother, Andrew
last_name: Fairbrother
- first_name: Victor
full_name: Izquierdo Roca, Victor
last_name: Izquierdo Roca
- first_name: Xavier
full_name: Fontané, Xavier
last_name: Fontané
- 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
- first_name: Edgardo
full_name: Saucedo, Edgardo
last_name: Saucedo
- first_name: Alejandro
full_name: Pérez Rodríguez, Alejandro
last_name: Pérez Rodríguez
citation:
ama: 'Fairbrother A, Izquierdo Roca V, Fontané X, et al. ZnS grain size effects
on near-resonant Raman scattering: Optical non-destructive grain size estimation.
CrystEngComm. 2014;16(20):4120-4125. doi:10.1039/c3ce42578a'
apa: 'Fairbrother, A., Izquierdo Roca, V., Fontané, X., Ibáñez, M., Cabot, A., Saucedo,
E., & Pérez Rodríguez, A. (2014). ZnS grain size effects on near-resonant
Raman scattering: Optical non-destructive grain size estimation. CrystEngComm.
Royal Society of Chemistry. https://doi.org/10.1039/c3ce42578a'
chicago: 'Fairbrother, Andrew, Victor Izquierdo Roca, Xavier Fontané, Maria Ibáñez,
Andreu Cabot, Edgardo Saucedo, and Alejandro Pérez Rodríguez. “ZnS Grain Size
Effects on Near-Resonant Raman Scattering: Optical Non-Destructive Grain Size
Estimation.” CrystEngComm. Royal Society of Chemistry, 2014. https://doi.org/10.1039/c3ce42578a.'
ieee: 'A. Fairbrother et al., “ZnS grain size effects on near-resonant Raman
scattering: Optical non-destructive grain size estimation,” CrystEngComm,
vol. 16, no. 20. Royal Society of Chemistry, pp. 4120–4125, 2014.'
ista: 'Fairbrother A, Izquierdo Roca V, Fontané X, Ibáñez M, Cabot A, Saucedo E,
Pérez Rodríguez A. 2014. ZnS grain size effects on near-resonant Raman scattering:
Optical non-destructive grain size estimation. CrystEngComm. 16(20), 4120–4125.'
mla: 'Fairbrother, Andrew, et al. “ZnS Grain Size Effects on Near-Resonant Raman
Scattering: Optical Non-Destructive Grain Size Estimation.” CrystEngComm,
vol. 16, no. 20, Royal Society of Chemistry, 2014, pp. 4120–25, doi:10.1039/c3ce42578a.'
short: A. Fairbrother, V. Izquierdo Roca, X. Fontané, M. Ibáñez, A. Cabot, E. Saucedo,
A. Pérez Rodríguez, CrystEngComm 16 (2014) 4120–4125.
date_created: 2018-12-11T11:46:00Z
date_published: 2014-05-28T00:00:00Z
date_updated: 2021-01-12T07:44:22Z
day: '28'
doi: 10.1039/c3ce42578a
extern: '1'
intvolume: ' 16'
issue: '20'
language:
- iso: eng
month: '05'
oa_version: None
page: 4120 - 4125
publication: CrystEngComm
publication_status: published
publisher: Royal Society of Chemistry
publist_id: '7473'
quality_controlled: '1'
status: public
title: 'ZnS grain size effects on near-resonant Raman scattering: Optical non-destructive
grain size estimation'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 16
year: '2014'
...
---
_id: '359'
abstract:
- lang: eng
text: An appropriate way of realizing property nanoengineering in complex quaternary
chalcogenide nanocrystals is presented for Cu2Cd xSnSey(CCTSe) polypods. The pivotal
role of the polarity in determining morphology, growth, and the polytypic branching
mechanism is demonstrated. Polarity is considered to be responsible for the formation
of an initial seed that takes the form of a tetrahedron with four cation-polar
facets. Size and shape confinement of the intermediate pentatetrahedral seed is
also attributed to polarity, as their external facets are anion-polar. The final
polypod extensions also branch out as a result of a cation-polarity-driven mechanism.
Aberration-corrected scanning transmission electron microscopy is used to identify
stannite cation ordering, while ab initio studies are used to show the influence
of cation ordering/distortion, stoichiometry, and polytypic structural change
on the electronic band structure.
acknowledgement: The research leading to these results has received funding from the
European Union Seventh Framework Programme under grant agreement 312483-ESTEEM2
(Integrated Infrastructure InitiativeI3) for using advance electron microscopes
at ER-C Jülich. J.A. acknowledges the funding from the Spanish MICINN project MAT2010-15138
(COPEON) and Generalitat de Catalunya 2009 SGR 770. R.R.Z. acknowledges the former.
The authors would also like to thank the TEM facilities in Serveis Cientificotecnics
from Universitat de Barcelona. N.G.-C. acknowledges the Spanish MECD for her Ph.D.
grant in the FPU program. JR and RZ acknowledge funding from MULTICAT and NANOENESTO
projects.
article_processing_charge: No
article_type: original
author:
- 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: Martina
full_name: Luysberg, Martina
last_name: Luysberg
- first_name: Nuria
full_name: García Castelló, Nuria
last_name: García Castelló
- first_name: Lothar
full_name: Houben, Lothar
last_name: Houben
- first_name: Joan
full_name: Prades, Joan
last_name: Prades
- first_name: Vincenzo
full_name: Grillo, Vincenzo
last_name: Grillo
- first_name: Rafal
full_name: Dunin Borkowski, Rafal
last_name: Dunin Borkowski
- first_name: Joan
full_name: Morante, Joan
last_name: Morante
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
- first_name: Jordi
full_name: Arbiol, Jordi
last_name: Arbiol
citation:
ama: Zamani R, Ibáñez M, Luysberg M, et al. Polarity-driven polytypic branching
in Cu-based quaternary chalcogenide nanostructures. ACS Nano. 2014;8(3):2290-2301.
doi:10.1021/nn405747h
apa: Zamani, R., Ibáñez, M., Luysberg, M., García Castelló, N., Houben, L., Prades,
J., … Arbiol, J. (2014). Polarity-driven polytypic branching in Cu-based quaternary
chalcogenide nanostructures. ACS Nano. American Chemical Society. https://doi.org/10.1021/nn405747h
chicago: Zamani, Reza, Maria Ibáñez, Martina Luysberg, Nuria García Castelló, Lothar
Houben, Joan Prades, Vincenzo Grillo, et al. “Polarity-Driven Polytypic Branching
in Cu-Based Quaternary Chalcogenide Nanostructures.” ACS Nano. American
Chemical Society, 2014. https://doi.org/10.1021/nn405747h.
ieee: R. Zamani et al., “Polarity-driven polytypic branching in Cu-based
quaternary chalcogenide nanostructures,” ACS Nano, vol. 8, no. 3. American
Chemical Society, pp. 2290–2301, 2014.
ista: Zamani R, Ibáñez M, Luysberg M, García Castelló N, Houben L, Prades J, Grillo
V, Dunin Borkowski R, Morante J, Cabot A, Arbiol J. 2014. Polarity-driven polytypic
branching in Cu-based quaternary chalcogenide nanostructures. ACS Nano. 8(3),
2290–2301.
mla: Zamani, Reza, et al. “Polarity-Driven Polytypic Branching in Cu-Based Quaternary
Chalcogenide Nanostructures.” ACS Nano, vol. 8, no. 3, American Chemical
Society, 2014, pp. 2290–301, doi:10.1021/nn405747h.
short: R. Zamani, M. Ibáñez, M. Luysberg, N. García Castelló, L. Houben, J. Prades,
V. Grillo, R. Dunin Borkowski, J. Morante, A. Cabot, J. Arbiol, ACS Nano 8 (2014)
2290–2301.
date_created: 2018-12-11T11:46:01Z
date_published: 2014-03-25T00:00:00Z
date_updated: 2021-01-12T07:44:30Z
day: '25'
doi: 10.1021/nn405747h
extern: '1'
intvolume: ' 8'
issue: '3'
language:
- iso: eng
month: '03'
oa_version: None
page: 2290 - 2301
publication: ACS Nano
publication_status: published
publisher: American Chemical Society
publist_id: '7475'
quality_controlled: '1'
status: public
title: Polarity-driven polytypic branching in Cu-based quaternary chalcogenide nanostructures
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 8
year: '2014'
...
---
_id: '2852'
abstract:
- lang: eng
text: A robust combiner for hash functions takes two candidate implementations and
constructs a hash function which is secure as long as at least one of the candidates
is secure. So far, hash function combiners only aim at preserving a single property
such as collision-resistance or pseudorandomness. However, when hash functions
are used in protocols like TLS they are often required to provide several properties
simultaneously. We therefore put forward the notion of robust multi-property combiners
and elaborate on different definitions for such combiners. We then propose a combiner
that provably preserves (target) collision-resistance, pseudorandomness, and being
a secure message authentication code. This combiner satisfies the strongest notion
we propose, which requires that the combined function satisfies every security
property which is satisfied by at least one of the underlying hash function. If
the underlying hash functions have output length n, the combiner has output length
2 n. This basically matches a known lower bound for black-box combiners for collision-resistance
only, thus the other properties can be achieved without penalizing the length
of the hash values. We then propose a combiner which also preserves the property
of being indifferentiable from a random oracle, slightly increasing the output
length to 2 n+ω(log n). Moreover, we show how to augment our constructions in
order to make them also robust for the one-wayness property, but in this case
require an a priory upper bound on the input length.
author:
- first_name: Marc
full_name: Fischlin, Marc
last_name: Fischlin
- first_name: Anja
full_name: Lehmann, Anja
last_name: Lehmann
- first_name: Krzysztof Z
full_name: Pietrzak, Krzysztof Z
id: 3E04A7AA-F248-11E8-B48F-1D18A9856A87
last_name: Pietrzak
orcid: 0000-0002-9139-1654
citation:
ama: Fischlin M, Lehmann A, Pietrzak KZ. Robust multi-property combiners for hash
functions. Journal of Cryptology. 2014;27(3):397-428. doi:10.1007/s00145-013-9148-7
apa: Fischlin, M., Lehmann, A., & Pietrzak, K. Z. (2014). Robust multi-property
combiners for hash functions. Journal of Cryptology. Springer. https://doi.org/10.1007/s00145-013-9148-7
chicago: Fischlin, Marc, Anja Lehmann, and Krzysztof Z Pietrzak. “Robust Multi-Property
Combiners for Hash Functions.” Journal of Cryptology. Springer, 2014. https://doi.org/10.1007/s00145-013-9148-7.
ieee: M. Fischlin, A. Lehmann, and K. Z. Pietrzak, “Robust multi-property combiners
for hash functions,” Journal of Cryptology, vol. 27, no. 3. Springer, pp.
397–428, 2014.
ista: Fischlin M, Lehmann A, Pietrzak KZ. 2014. Robust multi-property combiners
for hash functions. Journal of Cryptology. 27(3), 397–428.
mla: Fischlin, Marc, et al. “Robust Multi-Property Combiners for Hash Functions.”
Journal of Cryptology, vol. 27, no. 3, Springer, 2014, pp. 397–428, doi:10.1007/s00145-013-9148-7.
short: M. Fischlin, A. Lehmann, K.Z. Pietrzak, Journal of Cryptology 27 (2014) 397–428.
date_created: 2018-12-11T11:59:56Z
date_published: 2014-07-01T00:00:00Z
date_updated: 2023-02-23T11:17:53Z
day: '01'
department:
- _id: KrPi
doi: 10.1007/s00145-013-9148-7
intvolume: ' 27'
issue: '3'
language:
- iso: eng
month: '07'
oa_version: None
page: 397 - 428
publication: Journal of Cryptology
publication_status: published
publisher: Springer
publist_id: '3940'
quality_controlled: '1'
related_material:
record:
- id: '3225'
relation: earlier_version
status: public
scopus_import: 1
status: public
title: Robust multi-property combiners for hash functions
type: journal_article
user_id: 3FFCCD3A-F248-11E8-B48F-1D18A9856A87
volume: 27
year: '2014'
...
---
_id: '348'
abstract:
- lang: eng
text: "Bi2S3-xTex bulk nanocomposites with crystal domain sizes in the range from
50 nm to 100 nm were obtained from the reaction of Bi2S3 nanorods with Te powder.
The thermoelectric properties of the obtained nanocomposites were analysed in
the temperature range from 0°C to 300°C. We observed how the thermoelectric properties
of the material improved with the annealing temperature, being a spark plasma
sintering process needed to maintain the material nanostructuration while maximising
its electrical properties. Finally thermoelectric dimensionless figures of merit
ZT up to 0.42 were obtained before any charge carrier concentration optimisation.
Copyright © 2014 Inderscience Enterprises Ltd.\r\n\r\n"
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: Umberto
full_name: Anselmi Tamburini, Umberto
last_name: Anselmi Tamburini
- first_name: Oscar
full_name: Durá, Oscar
last_name: Durá
- first_name: Marco
full_name: De La Torre, Marco
last_name: De La Torre
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
citation:
ama: Cadavid D, Ibáñez M, Anselmi Tamburini U, Durá O, De La Torre M, Cabot A. Thermoelectric
properties of bottom up assembled Bi2S 3-xTex nanocomposites. International
Journal of Nanotechnology. 2014;11(9-11):773-784. doi:10.1504/IJNT.2014.063787
apa: Cadavid, D., Ibáñez, M., Anselmi Tamburini, U., Durá, O., De La Torre, M.,
& Cabot, A. (2014). Thermoelectric properties of bottom up assembled Bi2S
3-xTex nanocomposites. International Journal of Nanotechnology. Inderscience
Enterprises Limited . https://doi.org/10.1504/IJNT.2014.063787
chicago: Cadavid, Doris, Maria Ibáñez, Umberto Anselmi Tamburini, Oscar Durá, Marco
De La Torre, and Andreu Cabot. “Thermoelectric Properties of Bottom up Assembled
Bi2S 3-XTex Nanocomposites.” International Journal of Nanotechnology. Inderscience
Enterprises Limited , 2014. https://doi.org/10.1504/IJNT.2014.063787.
ieee: D. Cadavid, M. Ibáñez, U. Anselmi Tamburini, O. Durá, M. De La Torre, and
A. Cabot, “Thermoelectric properties of bottom up assembled Bi2S 3-xTex nanocomposites,”
International Journal of Nanotechnology, vol. 11, no. 9–11. Inderscience
Enterprises Limited , pp. 773–784, 2014.
ista: Cadavid D, Ibáñez M, Anselmi Tamburini U, Durá O, De La Torre M, Cabot A.
2014. Thermoelectric properties of bottom up assembled Bi2S 3-xTex nanocomposites.
International Journal of Nanotechnology. 11(9–11), 773–784.
mla: Cadavid, Doris, et al. “Thermoelectric Properties of Bottom up Assembled Bi2S
3-XTex Nanocomposites.” International Journal of Nanotechnology, vol. 11,
no. 9–11, Inderscience Enterprises Limited , 2014, pp. 773–84, doi:10.1504/IJNT.2014.063787.
short: D. Cadavid, M. Ibáñez, U. Anselmi Tamburini, O. Durá, M. De La Torre, A.
Cabot, International Journal of Nanotechnology 11 (2014) 773–784.
date_created: 2018-12-11T11:45:57Z
date_published: 2014-01-01T00:00:00Z
date_updated: 2021-01-12T07:43:44Z
day: '01'
doi: 10.1504/IJNT.2014.063787
extern: '1'
intvolume: ' 11'
issue: 9-11
language:
- iso: eng
month: '01'
oa_version: None
page: 773 - 784
publication: International Journal of Nanotechnology
publication_status: published
publisher: 'Inderscience Enterprises Limited '
publist_id: '7476'
quality_controlled: '1'
status: public
title: Thermoelectric properties of bottom up assembled Bi2S 3-xTex nanocomposites
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 11
year: '2014'
...
---
_id: '350'
abstract:
- lang: eng
text: Herein, a colloidal synthetic route to produce highly monodisperse Cu2HgGeSe4
(CHGSe) nanoparticles (NPs) is presented in detail. The high yield of the developed
procedure allowed the production of CHGSe NPs at the gram scale. A thorough analysis
of their structural and optical properties is shown. CHGSe NPs displayed poly-tetrahedral
morphology and narrow size distributions with average size in the range of 10–40
nm and size dispersions below 10 %. A 1.6 eV optical band gap was measured by
mean of UV–Vis. By adjusting the cation ratio, an effective control of their electrical
conductivity is achieved. The prepared NPs are used as building blocks for the
production of CHGSe bulk nanostructured materials. The thermoelectric properties
of CHGSe nanomaterials are studied in the temperature range from 300 to 730 K.
CHGSe nanomaterials reached electrical conductivities up to 5 × 104 S m−1, Seebeck
coefficients above 100 μV K−1, and thermal conductivities below 1.0 W m−1 K−1
which translated into thermoelectric figures of merit up to 0.34 at 730 K.
acknowledgement: The research was supported by the European Regional Development Funds
(ERDF, ‘‘FEDER Programa Competitivitat de Catalunya 2007–2013’’).
article_processing_charge: No
article_type: original
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: Doris
full_name: Cadavid, Doris
last_name: Cadavid
- first_name: Reza
full_name: Zamani, Reza
last_name: Zamani
- first_name: Javier
full_name: Rubio Garcia, Javier
last_name: Rubio Garcia
- first_name: Stéphane
full_name: Gorsse, Stéphane
last_name: Gorsse
- 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, Ibáñez M, Cadavid D, et al. Colloidal synthesis and functional properties
of quaternary Cu based semiconductors: Cu2HgGeSe4. Journal of Nanoparticle
Research. 2014;16(3). doi:10.1007/s11051-014-2297-2'
apa: 'Li, W., Ibáñez, M., Cadavid, D., Zamani, R., Rubio Garcia, J., Gorsse, S.,
… Cabot, A. (2014). Colloidal synthesis and functional properties of quaternary
Cu based semiconductors: Cu2HgGeSe4. Journal of Nanoparticle Research.
Kluwer. https://doi.org/10.1007/s11051-014-2297-2'
chicago: 'Li, Wenhua, Maria Ibáñez, Doris Cadavid, Reza Zamani, Javier Rubio Garcia,
Stéphane Gorsse, Joan Morante, Jordi Arbiol, and Andreu Cabot. “Colloidal Synthesis
and Functional Properties of Quaternary Cu Based Semiconductors: Cu2HgGeSe4.”
Journal of Nanoparticle Research. Kluwer, 2014. https://doi.org/10.1007/s11051-014-2297-2.'
ieee: 'W. Li et al., “Colloidal synthesis and functional properties of quaternary
Cu based semiconductors: Cu2HgGeSe4,” Journal of Nanoparticle Research,
vol. 16, no. 3. Kluwer, 2014.'
ista: 'Li W, Ibáñez M, Cadavid D, Zamani R, Rubio Garcia J, Gorsse S, Morante J,
Arbiol J, Cabot A. 2014. Colloidal synthesis and functional properties of quaternary
Cu based semiconductors: Cu2HgGeSe4. Journal of Nanoparticle Research. 16(3).'
mla: 'Li, Wenhua, et al. “Colloidal Synthesis and Functional Properties of Quaternary
Cu Based Semiconductors: Cu2HgGeSe4.” Journal of Nanoparticle Research,
vol. 16, no. 3, Kluwer, 2014, doi:10.1007/s11051-014-2297-2.'
short: W. Li, M. Ibáñez, D. Cadavid, R. Zamani, J. Rubio Garcia, S. Gorsse, J. Morante,
J. Arbiol, A. Cabot, Journal of Nanoparticle Research 16 (2014).
date_created: 2018-12-11T11:45:58Z
date_published: 2014-02-18T00:00:00Z
date_updated: 2021-01-12T07:43:53Z
day: '18'
doi: 10.1007/s11051-014-2297-2
extern: '1'
intvolume: ' 16'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://hal.archives-ouvertes.fr/hal-00959322/
month: '02'
oa: 1
oa_version: Submitted Version
publication: Journal of Nanoparticle Research
publication_status: published
publisher: Kluwer
publist_id: '7478'
quality_controlled: '1'
status: public
title: 'Colloidal synthesis and functional properties of quaternary Cu based semiconductors:
Cu2HgGeSe4'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 16
year: '2014'
...