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Quasi-Static Energy Transport between Nanoparticles

Published online by Cambridge University Press:  16 June 2015

George Y. Panasyuk  and
Kirk L. Yerkes
George Y. Panasyuk
Affiliation:
Aerospace System Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, U.S.A.
Kirk L. Yerkes
Affiliation:
Aerospace System Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, U.S.A.
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Abstract

We consider energy transfer between non-equal nanoparticles mediated by a quantum system. The nanoparticles are considered as thermal reservoirs described as ensembles of finite numbers of harmonic oscillators within the Drude-Ullersma model having mode spacings Δ1 and Δ2. Our approach is based on the generalized quantum Langevin equation. The quasi-static energy transport between the thermal reservoirs is investigated. As is shown, the double degeneracy of the mode frequencies, which occurred in the previously considered case when Δ1 = Δ2, is removed in the present case of non-equal mode spacings. Equations describing long-time (t ∼1/Δ1,2) relaxation for the mode temperatures (or the ensemble averaged mode energies) are solved and the resulting expression for the total energy current between the nanoparticles is derived and explored.

Keywords

nanoscalesimulationthermal conductivity
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1779: Symposium M – Nanoscale Heat Transport―From Fundamentals to Devices , 2015 , pp. 1 - 6
Copyright
Copyright © Materials Research Society 2015 

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References

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