Thermal cloaking, as an ultimate thermal “illusion” phenomenon, is the result of advanced heat manipulation with thermal metamaterials—heat can be guided around a hidden object smoothly without disturbing the ambient thermal environment. However, all previous thermal metamaterial cloaks were passive devices, lacking the functionality of switching on/off and the flexibility of changing geometries. In this letter, we report an active thermal cloaking device that is controllable. Different from previous thermal cloaking approaches, this thermal cloak adopts active thermoelectric components to “pump” heat from one side to the other side of the hidden object, in a process controlled by input electric voltages. Our work not only incorporates active components in thermal cloaking but also provides controllable functionality in thermal metamaterials that can be used to construct more flexible thermal devices.
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21 September 2015
Research Article|
September 21 2015
Active thermal cloak
Hongyi Xu;
Hongyi Xu
a)
1Division of Physics and Applied Physics,
Nanyang Technological University
, 21 Nanyang Link, Singapore
637371
Search for other works by this author on:
Youming Zhang;
Youming Zhang
1Division of Physics and Applied Physics,
Nanyang Technological University
, 21 Nanyang Link, Singapore
637371
Search for other works by this author on:
Baile Zhang
Baile Zhang
a)
1Division of Physics and Applied Physics,
Nanyang Technological University
, 21 Nanyang Link, Singapore
6373712Centre for Disruptive Photonic Technologies,
Nanyang Technological University
, 21 Nanyang Link, Singapore
637371
Search for other works by this author on:
Dang Minh Nguyen
Hongyi Xu
1,a)
Youming Zhang
1
Baile Zhang
1,2,a)
1Division of Physics and Applied Physics,
Nanyang Technological University
, 21 Nanyang Link, Singapore
637371
2Centre for Disruptive Photonic Technologies,
Nanyang Technological University
, 21 Nanyang Link, Singapore
637371a)
Authors to whom correspondence should be addressed. Electronic addresses: [email protected] and [email protected].
Appl. Phys. Lett. 107, 121901 (2015)
Article history
Received:
June 24 2015
Accepted:
July 28 2015
Citation
Dang Minh Nguyen, Hongyi Xu, Youming Zhang, Baile Zhang; Active thermal cloak. Appl. Phys. Lett. 21 September 2015; 107 (12): 121901. https://doi.org/10.1063/1.4930989
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