期刊
APPLIED PHYSICS LETTERS
卷 109, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4959251
关键词
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资金
- National Natural Science Foundation of China [11222544, 11572090]
- Science and Technology Commission of Shanghai Municipality [16ZR1445100]
For macroscopically manipulating heat flow at will, thermal metamaterials have opened a practical way, which possesses a single function, such as either cloaking or concentrating the flow of heat even though environmental temperature varies. By developing a theory of transformation heat transfer for multiple functions, here we introduce the concept of intelligent thermal metamaterials with a dual function, which is in contrast to the existing thermal metamaterials with single functions. By assembling homogeneous isotropic materials and shape-memory alloys, we experimentally fabricate a kind of intelligent thermal metamaterials, which can automatically change from a cloak (or concentrator) to a concentrator (or cloak) when the environmental temperature changes. This work paves an efficient way for a controllable gradient of heat, and also provides guidance both for arbitrarily manipulating the flow of heat and for efficiently designing similar intelligent metamaterials in other fields. Published by AIP Publishing.
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