Published November 13, 2012
| Published
Journal Article
Open
Determining Phonon Mean Free Paths from Observations of Quasiballistic Thermal Transport
- Creators
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Minnich, A. J.
Abstract
The mean free paths (MFPs) of thermal phonons are mostly unknown in many solids. Recent work indicates that MFPs may be measured using experimental observations of quasiballistic thermal transport, but the precise relationship between the measurements and the MFP distribution remains unclear. Here, we present a method that can accurately reconstruct the MFP distribution from quasiballistic thermal measurements without any assumptions regarding the phonon scattering mechanisms. Our result will enable a substantially improved understanding of thermal transport in many solids, particularly thermoelectrics.
Additional Information
© 2012 American Physical Society. Received 6 August 2012; published 13 November 2012. The author would like to thank J. A. Tropp for help with the convex optimization, J. P. Peraud and Q. Hao for help with the MC simulations, and A. A. Maznev for useful discussions. This work was sponsored in part by Robert Bosch LLC through Bosch Energy Research Network Grant No. 13.01.CC11. This work was also supported in part by a start-up fund from the California Institute of Technology.Attached Files
Published - PhysRevLett.109.205901.pdf
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PhysRevLett.109.205901.pdf
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Additional details
- Eprint ID
- 36113
- Resolver ID
- CaltechAUTHORS:20130102-112244847
- 13.01.CC11
- Robert Bosch LLC Bosch Energy Research Network
- Caltech
- Created
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2013-02-05Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field