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Suppression of phonon heat conduction in cross-section modulated nanowires

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dc.contributor.author ISACOVA, C.
dc.contributor.author COCEMASOV, A.
dc.contributor.author NIKA, D.
dc.date.accessioned 2020-05-14T13:56:13Z
dc.date.available 2020-05-14T13:56:13Z
dc.date.issued 2015
dc.identifier.citation ISACOVA, C., COCEMASOV, A., NIKA, D. Suppression of phonon heat conduction in cross-section modulated nanowires. In: ICNMBE: International conference on Nanotechnologies and Biomedical Engineering: proc. of the 3rd intern. conf., Sept. 23-26 : Program & Abstract Book , 2015. Chişinău, 2015, p. 76. en_US
dc.identifier.uri http://repository.utm.md/handle/5014/8203
dc.description Abstract en_US
dc.description.abstract In this work we have theoretically investigated phonon heat flux in cross- section modulated Si/Ge segmented nanowires, employing the Born-von Karman type and Face-centered cubic cell models of lattice vibrations and the Boltzmann transport equation within the relaxation time approximation. It has been demonstrated that thermal flux decreases significantly in such nanowires in comparison with generic homogeneous Si or Ge nanowires due to redistribution of phonon energy spectra and localizations of phonon modes in nanowire segments. As a result, three- to five-fold drop of the phonon heat flux in the 50 K to 400 K temperature range is predicted for cross-section modulated Si/Ge segmented nanowires in comparison with generic nanowires. The obtained results indicate that cross-section modulated segmented nanowires are promising candidates for thermoelectric applications. en_US
dc.language.iso en en_US
dc.publisher Tehnica UTM en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject phonon heat fluxes en_US
dc.subject nanowires en_US
dc.title Suppression of phonon heat conduction in cross-section modulated nanowires en_US
dc.type Article en_US


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