Quasi-invisible thermal cloak based on homogenous materials |
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Authors: | Quanwen Hou Jianbo Yin Xiaopeng Zhao Yanqiang Bi |
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Institution: | 1. Smart Materials Laboratory, MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Department of Applied Physics, Northwestern Polytechnical University, Xi''an 710129, China;2. Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China |
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Abstract: | Invisible thermal cloak, which cancels distortions of temperature distribution caused by objects, has many potential applications in thermal engineering. In this letter, we theoretically proposed and simulatively verified a new design method for quasi-invisible thermal cloak. Different from conventional transformation thermodynamics that focus on complete invisibility, our method only decreases the effective scale of objects to small enough and realizes a quasi-invisible cloaking effect in thermal conduction regime. However, this quasi-invisible cloak has the same effect as that of invisible thermal cloak in practical engineering. More important, our cloak is easy to construct by natural materials due to its homogenous thermal properties and can cloak objects with different shapes and properties. These characters make the clock more comfortable for engineering applications. |
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Keywords: | Metamaterials Thermal cloak Transformation thermodynamics Thermal conduction |
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