Adjustable two-dimensional thermal invisible cloak based on multilayer vanadium dioxide

A technology of vanadium dioxide and vanadium dioxide ring layer, which is applied in clothing, optics, instruments, etc., can solve the problems that the thermal stealth function does not have tunability and cannot be turned on, so as to improve computer performance, save energy, and reduce complexity. degree and cost effects

Inactive Publication Date: 2017-08-18
DALIAN UNIV OF TECH
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to overcome the shortcoming that the thermal stealth function of the existing two-dimensional thermal stealth cloak does not have tunability (that is, the thermal stealth function cannot be turned on/off), and to use vanadium dioxide,

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  • Adjustable two-dimensional thermal invisible cloak based on multilayer vanadium dioxide
  • Adjustable two-dimensional thermal invisible cloak based on multilayer vanadium dioxide
  • Adjustable two-dimensional thermal invisible cloak based on multilayer vanadium dioxide

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Embodiment 1

[0030] First, the designed two-dimensional vanadium dioxide ring layer is prepared on the upper surface of the substrate 1 through the material growth process and the mask process, that is, the center of the x-y horizontal plane is taken as the axis from the inside to the outside in the direction of the x and y axes layer by layer. The continuation is formed to realize the N-layer (N≥1) two-dimensional vanadium dioxide ring layer, as shown in Figure 2(a).

[0031] Among them, the design of the two-dimensional vanadium dioxide ring layer can use algorithms such as finite time domain difference method and finite element method. The thin metal patch 10 is processed between the bottom of the N-layer (N≥1) two-dimensional vanadium dioxide ring layer 2 and the upper part of the substrate 1 through a coating process.

[0032]Small holes 5 are drilled in the substrate corresponding to each thin metal patch 10 . Wire 6 is installed in the small hole, one end of the wire is connected t...

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Abstract

The invention provides an adjustable two-dimensional thermal invisible cloak based on multilayer vanadium dioxide. Annular layers of vanadium dioxide extend layer by layer in the x-y axis direction by taking the x-y horizontal plane as the axis to form the adjustable two-dimensional thermal invisible cloak; through control of crystal structure of the vanadium dioxide in different annular layers, the layers can correspond to different thermal conductivity coefficients, two-dimensional thermal conductivity distribution needed by thermal invisibility is acquired, original temperature field and isotherm distribution is recovered after heat flow passes by a cloak area, thermal invisibility is realized, interference of the external heat flow is shielded for an object at the center of the thermal invisible cloak, and external thermal flow distribution is not affected. Through circular control of crystal structure change of the vanadium dioxide in the annular layers, real-time on-off performance of the thermal invisible cloak is realized, and accordingly, the defect of incapability of circularly switching on and off the two-dimensional thermal invisible cloak is overcome.

Description

technical field [0001] The invention relates to a method and device for realizing an adjustable two-dimensional thermal invisibility cloak based on multilayer vanadium dioxide, 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-dimensional...

Claims

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Application Information

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IPC IPC(8): G02F1/29A41D3/08
CPCG02F1/29A41D3/08
Inventor 曹暾
Owner DALIAN UNIV OF TECH
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