Heat transfer in solid materials at short time scales, short length scales, and low temperatures is governed by the transport of ballistic phonons. In anisotropic crystals, the energy carried by these phonons is strongly channeled into well-defined directions in a phenomenon known as phonon focusing. Presented here is a new molecular dynamics simulation approach for visualizing acoustic phonon focusing in anisotropic crystals. An advantage of this approach over experimental phonon imaging techniques is that it allows examination of phonon propagation at selected modes and frequencies. The spatial, mode, and frequency dependence of ballistic energy transport gained with this approach will be useful for understanding heat transfer issues in high frequency electronics and short time scale laser-material interactions.
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ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference
July 8–12, 2007
Vancouver, British Columbia, Canada
Conference Sponsors:
- Heat Transfer Division
ISBN:
0-7918-4275-4
PROCEEDINGS PAPER
Atomistic Visualization of Ballistic Phonon Transport
Neil Zuckerman,
Neil Zuckerman
University of Pennyslvania, Philadelphia, PA
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Jennifer R. Lukes
Jennifer R. Lukes
University of Pennsylvania, Philadelphia, PA
Search for other works by this author on:
Neil Zuckerman
University of Pennyslvania, Philadelphia, PA
Jennifer R. Lukes
University of Pennsylvania, Philadelphia, PA
Paper No:
HT2007-32674, pp. 825-833; 9 pages
Published Online:
August 24, 2009
Citation
Zuckerman, N, & Lukes, JR. "Atomistic Visualization of Ballistic Phonon Transport." Proceedings of the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 2. Vancouver, British Columbia, Canada. July 8–12, 2007. pp. 825-833. ASME. https://doi.org/10.1115/HT2007-32674
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