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 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.
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Research Article| July 01 2010
Phonon wave-packet interference and phonon tunneling based energy transport across nanostructured thin films
Z. T. Tian;
B. E. White, Jr.;
Z. T. Tian, B. E. White, Y. Sun; Phonon wave-packet interference and phonon tunneling based energy transport across nanostructured thin films. Appl. Phys. Lett. 28 June 2010; 96 (26): 263113. https://doi.org/10.1063/1.3458831
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