journal article·2020-10

A Continuously Tunable Solid‐Like Convective Thermal Metadevice on the Reciprocal Line

Jiaxin Li, Ying Li, Pei‐Chao Cao, Tianzhi Yang, Xue‐Feng Zhu, Wuyi Wang, Cheng‐Wei Qiu

Advanced Materials· Volume 32· Issue 42
Publisher page

Abstract

Abstract The emerging thermal metamaterials and metadevices demonstrate significant potential to transform thermal conduction. However, the thermal conductivities of existing devices are all restricted at fixed values if the configuration or constituent materials are static. Thermal convection provides an additional tool to boost and flexibly modify the heat transfer in moving matter, but it is essentially distinct from thermal conduction since the Onsager reciprocity is generally broken in the former but preserved in the latter. Therefore, it is difficult to use convective components for sophisticated control of conductive heat. Here, it is shown that a convective system can be made undistinguishable from a conductive one in principle, by discovering and operating on the reciprocal line of mechanically rotating systems. The realized thermal metadevice can thus mimic a solid‐like material whose thermal conductivity dynamically covers a wide range. It offers great possibilities of real‐time smooth control over heat transfer for broad applications.
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Research context

OpenAlex topics: Thermal Radiation and Cooling Technologies · Metamaterials and Metasurfaces Applications · Thermal properties of materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Mechatronics Engineering Harbin Institute of Technology Harbin 150001 China

Department of Electrical and Computer Engineering National University of Singapore Singapore 117583 Singapore

Interdisciplinary Center for Quantum Information State Key Laboratory of Modern Optical Instrumentation College of Information Science and Electronic Engineering Zhejiang University Hangzhou 310027 China

ZJU‐Hangzhou Global Science and Technology Innovation Center Key Lab. of Advanced Micro/Nano Electronic Devices and Smart Systems of Zhejiang Zhejiang University Hangzhou 310027 China

School of Physics and Innovation Institute Huazhong University of Science and Technology Wuhan 430074 China

School of Mechanical Engineering and Automation Northeastern University Shenyang 110819 China

Funding

Ministry of Education - Singapore · National Natural Science Foundation of China · Henan University of Science and Technology · China Scholarship Council

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