期刊
SCIENTIFIC REPORTS
卷 4, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/srep06375
关键词
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资金
- NSFC [51171140, 51231008, 51321003, 51320105014]
- 973 Program of China [2010CB631003, 2012CB619402]
- 111 project [B06025]
- National Nuclear Security Administration of the U.S. DOE at LANL through the LDRD Program [DE-AC52-06NA25396]
- Royal Society
- NSF [DMR-1240933, DMR-1120901]
- Leverhulme fund [RG66640]
- EPSRC [EP/K009702/1]
- EPSRC [EP/K009702/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K009702/1] Funding Source: researchfish
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 k 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.
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