TITLE

Phonon wave-packet interference and phonon tunneling based energy transport across nanostructured thin films

AUTHOR(S)
Tian, Z. T.; White Jr., B. E.; Sun, Y.
PUB. DATE
June 2010
SOURCE
Applied Physics Letters;6/28/2010, Vol. 96 Issue 26, p263113
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The molecular dynamics based phonon wave-packet technique is used to study phonon transport across mass-mismatched fcc thin films. Transport behavior of normally incident longitudinal acoustic phonon wave packets with wave vectors ranging in magnitude from 2% to 50% of the <100> first Brillouin zone boundary is examined as a function of thin film thickness when the phonon mean free path exceeds film thickness. The results indicate that for thin film to bulk solid mass ratios up to a factor of 6, the transmission of energy through the thin film can be well described by treating the thin film as a bulk solid.
ACCESSION #
51975684

 

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