Adjustable and controllable three-dimensional thermal invisibility cloak based on multiple annular graphene layers

A multi-layer graphene, layer graphene technology, applied in optics, instruments, nonlinear optics, etc., can solve problems such as inability to open, thermal stealth function does not have tunability, etc., to save energy, improve computer performance, application Potential effect
CN106959052AActive Publication Date: 2017-07-18DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2017-07-18

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Abstract

The invention provides an adjustable and controllable three-dimensional thermal invisibility cloak based on multiple annular graphene layers. The adjustable and controllable three-dimensional thermal invisibility cloak is achieved through a surface covering shell layer composed of graphene. The surface covering shell layer is formed in the manner that the multiple graphene annular layers are stacked from bottom to top. All the layers can correspond to different thermal conductivity coefficients through control over the Fermi level distribution of graphene in the different annular layers, and then three-dimensional thermal conductivity distribution needed by thermal invisibility is obtained; and then, after thermal flow winds around the cloak area, a temperature field and an isotherm recover original distribution, and therefore the thermal invisibility function is achieved. Meanwhile, the real-time switching on / off performance of the thermal invisibility cloak is achieved through circular control over the Fermi level distribution of graphene in each annular layer, and therefore the defect that the thermal invisibility cloak cannot be circularly switched on or off is overcome.
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Description

technical field

[0001] The invention relates to a method and device for realizing an adjustable three-dimensional thermal invisibility cloak based on multilayer graphene ring layers, which can be applied to the field of heat flow control. Background technique

[0002] In 2006, Document 1: "J.B.Pendry et al, SCIENCE, 2006(312): 1780" proposed for the first time that the use of anisotropic media can manipulate the propagation direction of light waves and realize the concept of optical cloaking, which has attracted widespread attention and has become an important field in the field of optics. research hotspots. At the same time, as an expanded field of optical cloak application, that is to manipulate the direction of heat flow through artificial structures to achieve thermal cloaking has quickly become a hot issue in the field of thermodynamics. In 2013, document 2: "R. Schittny et al, Phys. Rev. Lett. 2013(110): 195901" used copper and polydimethylsiloxane to make a two-dimen...

Claims

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