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Coherent and Incoherent Thermal Transport in Nanomeshes

Ravichandran, Navaneetha K. and Minnich, Austin J. (2014) Coherent and Incoherent Thermal Transport in Nanomeshes. Physical Review B, 89 (20). Art. No. 205432. ISSN 1098-0121. http://resolver.caltech.edu/CaltechAUTHORS:20140421-080824072

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Abstract

Coherent thermal transport in nanopatterned structures is a topic of considerable interest, but whether it occurs in certain structures remains unclear due to a poor understanding of which phonons conduct heat. Here, we perform fully three-dimensional, frequency-dependent simulations of thermal transport in nanomeshes by solving the Boltzmann transport equation with an efficient Monte Carlo method. From the spectral information in our simulations, we show that thermal transport in nanostructures that can be created with available lithographic techniques is dominated by incoherent boundary scattering at room temperature. Our result provides important insights into the conditions required for coherent thermal transport to occur in artificial structures.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/1403.7647arXivDiscussion Paper
http://dx.doi.org/10.1103/PhysRevB.89.205432DOIArticle
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.89.205432PublisherArticle
Additional Information:© 2014 American Physical Society. Received 12 November 2013; revised manuscript received 17 March 2014; published 27 May 2014. This work is part of the “Light-Material Interactions in Energy Conversion” Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under Award No. DE-SC0001293.
Group:Resnick Sustainability Institute
Funders:
Funding AgencyGrant Number
Department of Energy (DOE) Light Material Interactions Energy Frontier Research CenterDE-SC0001293
Classification Code:PACS: 63.22.Kn, 61.43.Bn, 68.65.−k, 66.70.Df
Record Number:CaltechAUTHORS:20140421-080824072
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140421-080824072
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45059
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:21 Apr 2014 22:22
Last Modified:29 Sep 2016 23:21

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