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Anisotropic heat conduction in silicon nanowire network revealed by Raman scattering

Isaiev, Mykola ; Didukh, Oles ; Nychyporuk, Tetyana ; Timoshenko, Victor ; Lysenko, Vladimir

Applied physics letters, 2017-01, Vol.110 (1) [Periódico revisado por pares]

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Título:
Anisotropic heat conduction in silicon nanowire network revealed by Raman scattering
Autor: Isaiev, Mykola ; Didukh, Oles ; Nychyporuk, Tetyana ; Timoshenko, Victor ; Lysenko, Vladimir
Assuntos: Engineering Sciences ; Materials ; Micro and nanotechnologies ; Microelectronics ; Optics ; Photonic ; Physics
É parte de: Applied physics letters, 2017-01, Vol.110 (1)
Descrição: Anisotropic nanomaterials possess interesting thermal transport properties because they allow orientation of heat fluxes along preferential directions due to a high ratio (up to three orders of magnitude) between their in-plane and cross-plane thermal conductivities. Among different techniques allowing thermal conductivity evaluation, micro-Raman scattering is known to be one of the most efficient contactless measurement approaches. In this letter, an experimental approach based on Raman scattering measurements with variable laser spot sizes is reported. Correlation between experimental and calculated thermal resistances of one-dimensional nanocrystalline solids allows a simultaneous estimation of their in-plane and cross-plane thermal conductivities. In particular, our measurement approach is illustrated to be applied for anisotropic thermal conductivity evaluation of silicon nanowire arrays.
Editor: American Institute of Physics
Idioma: Inglês

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