Strain-controlled thermal conductivity in ferroic twinned films
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Li-2014-Strain-controlled thermal.pdf
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Author(s)
Li, Suzhi
Ding, Xiangdong
Ren, Jie
Moya, Xavier
Li, Ju
Salje, Ekhard K. H.
Sun, Jun, 1975-
Date Issued
September 2014
Journal
Scientific Reports
Publisher
Nature Publishing Group
Citation
Li, Suzhi, Xiangdong Ding, Jie Ren, Xavier Moya, Ju Li, Jun Sun, and Ekhard K. H. Salje. “Strain-Controlled Thermal Conductivity in Ferroic Twinned Films.” Sci. Rep. 4 (September 16, 2014): 6375.
Version
Final published version
Abstract
Large reversible changes of thermal conductivity are induced by mechanical stress, and the corresponding device is a key element for phononics applications. We show that the thermal conductivity κ of ferroic twinned thin films can be reversibly controlled by strain. Nonequilibrium molecular dynamics simulations reveal that thermal conductivity decreases linearly with the number of twin boundaries perpendicular to the direction of heat flow. Our demonstration of large and reversible changes in thermal conductivity driven by strain may inspire the design of controllable thermal switches for thermal logic gates and all-solid-state cooling devices.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1038/srep06375
