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9 p, 6.1 MB |
Engineering Heat Transport Across Epitaxial Lattice-Mismatched van der Waals Heterointerfaces
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Chávez Ángel, Emigdio (Institut Català de Nanociència i Nanotecnologia) ;
Tsipas, Polychronis (National Center for Scientific Research "Demokritos") ;
Xiao, Peng (Institut Català de Nanociència i Nanotecnologia) ;
Ahmadi, Mohammad Taghi (University of Warwick) ;
Daaoub, Abdalghani H. S. (University of Warwick) ;
Sadeghi, Hatef (University of Warwick) ;
Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ;
Dimoulas, Athanasios (National Center for Scientific Research "Demokritos") ;
Sachat, Alexandros el (Institut Català de Nanociència i Nanotecnologia)
Artificially engineered 2D materials offer unique physical properties for thermal management, surpassing naturally occurring materials. Here, using van der Waals epitaxy, we demonstrate the ability to engineer extremely insulating thermal metamaterials based on atomically thin lattice-mismatched BiSe/MoSe superlattices and graphene/PdSe heterostructures with exceptional thermal resistances (70-202 m 2 K/GW) and ultralow cross-plane thermal conductivities (0. [...]
2023 -  10.1021/acs.nanolett.3c01280
Nano letters, Vol. 23, Issue 15 (August 2023) , p. 6883-6891
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2.
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9 p, 1.6 MB |
Thermal transport in silver-coated polymer sphere composites by the bidirectional 3 ω method
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Sandell, Susanne (Norwegian University of Science and Technology. Department of Structural Engineering) ;
Wang, Thorstein (Norwegian University of Science and Technology. Department of Structural Engineering) ;
Chávez Ángel, Emigdio (Institut Català de Nanociència i Nanotecnologia) ;
Kristiansen, Helge (Conpart AS) ;
Zhang, Zhiliang (Norwegian University of Science and Technology. Department of Structural Engineering) ;
He, Jianying (Norwegian University of Science and Technology. Department of Structural Engineering)
The bidirectional 3 ω method is an electrothermal technique that is commonly used to obtain the thermal conductivity of materials such as liquids, biological samples, and pastes. In this work, an epoxy-based adhesive was filled with monodisperse 10 μm polymethyl methacrylate spheres coated with silver thin films (AgPS), such that a metallic network that dominated the thermal transport was formed through the composite. [...]
2022 - 10.1063/5.0080682
Journal of applied physics, Vol. 131, issue 12 (March 2022) , art. 125107
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3.
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8 p, 3.6 MB |
Anisotropic thermal conductivity of crystalline layered SnSe2
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Xiao, Peng (Universitat Autònoma de Barcelona. Departament de Física) ;
Chávez Ángel, Emigdio (Institut Català de Nanociència i Nanotecnologia) ;
Chaitoglou, Stefanos (National Center for Scientific Research Demokritos) ;
Sledzinska, Marianna (Institut Català de Nanociència i Nanotecnologia) ;
Dimoulas, Athanasios (National Center for Scientific Research Demokritos) ;
Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ;
Sachat, Alexandros el (Institut Català de Nanociència i Nanotecnologia)
The degree of thermal anisotropy affects critically key device-relevant properties of layered two-dimensional materials. Here, we systematically study the in-plane and cross-plane thermal conductivity of crystalline SnSe2 films of varying thickness (16-190 nm) and uncover a thickness-independent thermal conductivity anisotropy ratio of about ∼8. [...]
2021 - 10.1021/acs.nanolett.1c03018
Nano letters, Vol. 21, issue 21 (Nov. 2021) , p. 9172-9179
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8 p, 2.8 MB |
Emerging properties of non-crystalline phases of graphene and boron nitride based materials
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Antidormi, Aleandro (Institut Català de Nanociència i Nanotecnologia) ;
Colombo, Luigi (The University of Texas at Dallas. Department of Materials Science and Engineering) ;
Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We review recent developments on the synthesis and properties of two-dimensional materials which, although being mainly of an sp bonding character, exhibit highly disordered, non-uniform and structurally random morphologies. [...]
2022 - 10.1016/j.nanoms.2021.03.003
Nano Materials Science, Vol. 4, issue 1 (March 2022) , p. 10-17
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9 p, 2.0 MB |
Effect of crystallinity and thickness on thermal transport in layered PtSe2
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Sachat, Alexandros el (Institut Català de Nanociència i Nanotecnologia) ;
Xiao, Peng (Universitat Autònoma de Barcelona. Departament de Física) ;
Donadio, Davide (University of California. Department of Chemistry) ;
Bonell, Frédéric (Université Grenoble Alpes. Commissariat à l'énergie atomique et aux énergies alternatives) ;
Sledzinska, Marianna (Institut Català de Nanociència i Nanotecnologia) ;
Marty, Alain (Université Grenoble Alpes. Commissariat à l'énergie atomique et aux énergies alternatives) ;
Vergnaud, Céline (Université Grenoble Alpes. Commissariat à l'énergie atomique et aux énergies alternatives) ;
Boukari, Hervé (Université Grenoble Alpes. Commissariat à l'énergie atomique et aux énergies alternatives) ;
Jamet, Matthieu (Université Grenoble Alpes. Commissariat à l'énergie atomique et aux énergies alternatives) ;
Arregui Bravo, Guillermo (Institut Català de Nanociència i Nanotecnologia) ;
Chen, Zekun (University of California. Department of Chemistry) ;
Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia) ;
Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ;
Chávez Ángel, Emigdio (Institut Català de Nanociència i Nanotecnologia)
We present a comparative investigation of the influence of crystallinity and film thickness on the acoustic and thermal properties of layered PtSe films of varying thickness (1-40 layers) using frequency-domain thermo-reflectance, low-frequency Raman, and pump-probe coherent phonon spectroscopy. [...]
2022 - 10.1038/s41699-022-00311-x
npj 2D Materials and Applications, Vol. 6 (2022) , art. 32
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6.
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21 p, 1.9 MB |
Thermal transport in nanoporous holey silicon membranes investigated with optically induced transient thermal gratings
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Duncan, Ryan A. (Massachusetts Institute of Technology. Department of Chemistry) ;
Romano, Giuseppe (Massachusetts Institute of Technology. Department of Mechanical Engineering) ;
Sledzinska, Marianna (Institut Català de Nanociència i Nanotecnologia) ;
Maznev, Alexei A. (Massachusetts Institute of Technology. Department of Chemistry) ;
Péraud, Jean-Philippe M. (Lawrence Berkeley National Laboratory. Computational Research Division) ;
Hellman, Olle (California Institute of Technology. Department of Applied Physics and Materials Science) ;
Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ;
Nelson, Keith A. (Massachusetts Institute of Technology. Department of Chemistry)
In this study, we use transient thermal gratings-a non-contact, laser-based thermal metrology technique with intrinsically high accuracy-to investigate room-temperature phonon-mediated thermal transport in two nanoporous holey silicon membranes with limiting dimensions of 120 nm and 250 nm, respectively. [...]
2020 - 10.1063/1.5141804
Journal of applied physics, Vol. 128, issue 23 (Dec. 2020) , art. 235106
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7.
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8 p, 1.4 MB |
Quantifying thermal transport in buried semiconductor nanostructures : Via cross-sectional scanning thermal microscopy
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Spièce, Jean (Lancaster University. Physics Department) ;
Evangeli, Charalambos (Lancaster University. Physics Department) ;
Robson, Alexander J. (Lancaster University. Physics Department) ;
Sachat, Alexandros el (Institut Català de Nanociència i Nanotecnologia) ;
Haenel, Linda (University of Stuttgart) ;
Alonso, M. Isabel (Institut de Ciència de Materials de Barcelona) ;
Garriga, Miquel (Institut de Ciència de Materials de Barcelona) ;
Robinson, Benjamin James (Lancaster University. Material Science Institute) ;
Oehme, Michael (University of Stuttgart) ;
Schulze, Jörg (University of Stuttgart) ;
Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia) ;
Sotomayor Torres, Clivia (Institució Catalana de Recerca i Estudis Avançats) ;
Kolosov, Oleg Victor (Lancaster University. Material Science Institute)
Managing thermal transport in nanostructures became a major challenge in the development of active microelectronic, optoelectronic and thermoelectric devices, stalling the famous Moore's law of clock speed increase of microprocessors for more than a decade. [...]
2021 - 10.1039/d0nr08768h
Nanoscale, Vol. 13, Issue 24 (June 2021) , p. 10829-10836
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9.
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24 p, 2.5 MB |
Cooling and self-oscillation in a nanotube electromechanical resonator
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Urgell, C. (Institut de Ciències Fotòniques) ;
Yang, Wei (Institut de Ciències Fotòniques) ;
De Bonis, Sergio Lucio (Institut de Ciències Fotòniques) ;
Samanta, Chandan (Institut de Ciències Fotòniques) ;
Esplandiu Egido, Maria José (Institut Català de Nanociència i Nanotecnologia) ;
Dong, Q. (Université Paris-Saclay. Centre de Nanosciences et de Nanotechnologies) ;
Jin, Y. (Université Paris-Saclay. Centre de Nanosciences et de Nanotechnologies) ;
Bachtold, Adrian (Institut de Ciències Fotòniques)
Nanomechanical resonators are used with great success to couple mechanical motion to other degrees of freedom, such as photons, spins and electrons. The motion of a mechanical eigenmode can be efficiently cooled into the quantum regime using photons, but not other degrees of freedom. [...]
2020 - 10.1038/s41567-019-0682-6
Nature Physics, Vol. 16 (2020) , p. 32-37
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10.
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9 p, 1.6 MB |
Impact of synthetic conditions on the anisotropic thermal conductivity of poly(3,4-ethylenedioxythiophene) (PEDOT) : a molecular dynamics investigation
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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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