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Depósito Digital de Documentos de la UAB Encontrados 7 registros  La búsqueda tardó 0.00 segundos. 
1.
8 p, 829.7 KB Strong suppression of thermal conductivity in the presence of long terminal alkyl chains in low-disorder molecular semiconductors / Selezneva, Ekaterina (University of Cambridge. Optoelectronics Group) ; Vercouter, Alexandre (University of Mons. Laboratory for Chemistry of Novel Materials) ; Schweicher, Guillaume (University of Cambridge. Optoelectronics Group) ; Lemaur, Vincent (University of Mons. Laboratory for Chemistry of Novel Materials) ; Broch, Katharina (Universität Tübingen. Institut für Angewandte Physik) ; Antidormi, Aleandro (Institut Català de Nanociència i Nanotecnologia) ; Takimiya, Kazuo (RIKEN Center for Emergent Matter Science) ; Coropceanu, Veaceslav (Georgia Institute of Technology. School of Chemistry and Biochemistry) ; Brédas, Jean-Luc (The University of Arizona. Department of Chemistry and Biochemistry) ; Melis, Claudio (Universita di Cagliari. Dipartimento di Fisica) ; Cornil, Jerome (University of Mons. Laboratory for Chemistry of Novel Materials) ; Sirringhaus, Henning (University of Cambridge. Optoelectronics Group)
While the charge transport properties of organic semiconductors have been extensively studied over the recent years, the field of organics-based thermoelectrics is still limited by a lack of experimental data on thermal transport and of understanding of the associated structure-property relationships. [...]
2021 - 10.1002/adma.202008708
Advanced materials, Vol. 33, issue 37 (Sep. 2021) , art. 2008708  
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2.
6 p, 802.9 KB Observation of second sound in a rapidly varying temperature field in Ge / Beardo Ricol, Albert (Universitat Autònoma de Barcelona. Departament de Física) ; López-Suárez, Miquel (Institut de Ciència de Materials de Barcelona) ; Pérez, Luis Alberto (Institut de Ciència de Materials de Barcelona) ; Sendra, Lluc (Universitat Autònoma de Barcelona. Departament de Física) ; Alonso Carmona, Maria Isabel (Institut de Ciència de Materials de Barcelona) ; Melis, Claudio (Università di Cagliari. Dipartimento di Fisica) ; Bafaluy Bafaluy, Javier (Universitat Autònoma de Barcelona. Departament de Física) ; Camacho Castro, Juan (Universitat Autònoma de Barcelona. Departament de Física) ; Colombo, Luciano (Università di Cagliari. Dipartimento di Fisica) ; Rurali, Riccardo (Institut de Ciència de Materials de Barcelona) ; Àlvarez Calafell, Francesc Xavier (Universitat Autònoma de Barcelona. Departament de Física) ; Reparaz, Juan Sebastian (Institut de Ciència de Materials de Barcelona)
Second sound is known as the thermal transport regime where heat is carried by temperature waves. Its experimental observation was previously restricted to a small number of materials, usually in rather narrow temperature windows. [...]
2021 - 10.1126/sciadv.abg4677
Science advances, Vol. 7, Issue 27 (June 2021) , art. eabg4677  
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3.
24 p, 2.2 MB Thermal conductivity of benzothieno-benzothiophene derivatives at the nanoscale / Gueye, Magatte Niang (Centre national de la recherche scientifique (França). Institute for Electronics Microelectronics and Nanotechnology) ; Vercouter, Alexandre (University of Mons. Laboratory for Chemistry of Novel Materials) ; Jouclas, Rémy (Université Libre de Bruxelles. Laboratoire de Chimie des Polymères) ; Guerin, David (Centre national de la recherche scientifique (França). Institute for Electronics Microelectronics and Nanotechnology) ; Lemaur, Vincent (University of Mons. Laboratory for Chemistry of Novel Materials) ; Schweicher, Guillaume (Université Libre de Bruxelles. Laboratoire de Chimie des Polymères) ; Lenfant, Stephane (Centre national de la recherche scientifique (França). Institute for Electronics Microelectronics and Nanotechnology) ; Antidormi, Aleandro (Institut Català de Nanociència i Nanotecnologia) ; Geerts, Yves Henri (International Solvay Institutes for Physics and Chemistry (Brusel·les, Bèlgica)) ; Melis, Claudio (Universita di Cagliari. Dipartimento di Fisica) ; Cornil, Jerome (University of Mons. Laboratory for Chemistry of Novel Materials) ; Vuillaume, Dominique (Centre national de la recherche scientifique (França). Institute for Electronics Microelectronics and Nanotechnology)
We study by scanning thermal microscopy the nanoscale thermal conductance of films (40-400 nm thick) of [1]benzothieno[3,2-b][1]benzothiophene (BTBT) and 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene (C8-BTBT-C8). [...]
2021 - 10.1039/d0nr08619c
Nanoscale, Vol. 13, issue 6 (Feb. 2021) , p. 3800-3807  
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4.
6 p, 3.6 MB Thermal rectification in silicon by a graded distribution of defects / Dettori, Riccardo (Università di Cagliari. Dipartimento di Fisica) ; Melis, Claudio (Università di Cagliari. Dipartimento di Fisica) ; Rurali, Riccardo (Institut de Ciència de Materials de Barcelona) ; Colombo, Luciano (Institut Català de Nanociència i Nanotecnologia)
We discuss about computer experiments based on nonequilibrium molecular dynamics simulations providing evidence that thermal rectification can be obtained in bulk Si by a non-uniform distribution of defects. [...]
2016 - 10.1063/1.4953142
Journal of applied physics, Vol. 119, issue 21 (June 2016) , art. 215102  
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5.
9 p, 1.6 MB Impact of synthetic conditions on the anisotropic thermal conductivity of poly(3,4-ethylenedioxythiophene) (PEDOT) : a molecular dynamics investigation / Cappai, Antonio (University of Cagliari. Department of Physics) ; Antidormi, Aleandro (Institut Català de Nanociència i Nanotecnologia) ; Bosin, Andrea (University of Cagliari. Department of Physics) ; Narducci, Dario (University of Milano-Bicocca. Department of Materials Science) ; Colombo, Luciano (University of Cagliari. Department of Physics) ; Melis, Claudio (University of Cagliari. Department of Physics)
In this work we study the effect of different synthetic conditions on thermal transport properties of poly(3,4-ethylenedioxythiophene) (PEDOT) by focusing in particular on the role of proton scavengers. [...]
2020 - 10.1103/PhysRevMaterials.4.035401
Physical review materials, Vol. 4, Issue 3 (March 2020) , art. 35401  
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6.
17 p, 2.0 MB Thermal boundary resistance in semiconductors by non-equilibrium thermodynamics / Dettori, Riccardo (University of Cagliari. Department of Physics) ; Melis, Claudio (University of Cagliari. Department of Physics) ; Cartoixà Soler, Xavier (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; Rurali, Riccardo (Institut de Ciència de Materials de Barcelona) ; Colombo, Luciano (Institut Català de Nanociència i Nanotecnologia)
We critically address the problem of predicting the thermal boundary resistance at the interface between two semiconductors by atomistic simulations. After reviewing the available models, lattice dynamics calculations and molecular dynamics simulation protocols, we reformulate this problem in the language of non-equilibrium thermodynamics, providing an elegant, robust and valuable theoretical framework for the direct calculation of the thermal boundary resistance through molecular dynamics simulations. [...]
2016 - 10.1080/23746149.2016.1175317
Advances in Physics: X, Vol. 1, Issue 2 (May 2016) , p. 246-261  
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7.
18 p, 3.0 MB Thermal transport in porous Si nanowires from approach-to-equilibrium molecular dynamics calculations / Cartoixà Soler, Xavier (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; Dettori, Riccardo (Università degli Studi di Cagliari. Dipartimento di Fisica) ; Melis, Claudio (Università degli Studi di Cagliari. Dipartimento di Fisica) ; Colombo, Luciano (Università degli Studi di Cagliari. Dipartimento di Fisica) ; Rurali, Riccardo (Institut de Ciència de Materials de Barcelona)
We study thermal transport in porous Si nanowires (SiNWs) by means of approach-to-equilibrium molecular dynamics simulations. We show that the presence of pores greatly reduces the thermal conductivity, κ, of the SiNWs as long mean free path phonons are suppressed. [...]
2016 - 10.1063/1.4955038
Applied physics letters, Vol. 109, Issue 1 (Jul. 2016) , p. 131071-131074  
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