--- _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' ...