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Method and device for regulating near-field heat transfer by radiation of micro-nano flat plates through magnetic field

A technology of near-field radiation and magnetic field regulation, applied in the direction of microstructure devices, manufacturing microstructure devices, measuring devices, etc.

Pending Publication Date: 2021-09-10
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, people have invested a lot of energy to develop an active control scheme for near-field heat flow, and changing the gap between objects is a direct and effective method. However, in nanoscale spacing, in order to meet the requirements of modulation effects, The gap must be precisely controlled (resolution should be on the sub-nanometer level), which is quite challenging as the heat flux varies very sensitively to the gap

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  • Method and device for regulating near-field heat transfer by radiation of micro-nano flat plates through magnetic field
  • Method and device for regulating near-field heat transfer by radiation of micro-nano flat plates through magnetic field
  • Method and device for regulating near-field heat transfer by radiation of micro-nano flat plates through magnetic field

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Embodiment Construction

[0019] In conjunction with the following principles, embodiments and accompanying drawings further elaboration of the present invention.

[0020] First, we studied effect of magnetic field on the near-field radiation heat transfer plate micro-nano structures, and then through a layer of graphene on micro-nano plated plate structure, the magnetic field increases the range of the near-field radiation heat transfer regulation.

[0021] Changing the magnetic field near the theoretical basis of thermal radiation is a function of the magnetic field affecting the dielectric surface of the magneto-optic material will change the influence of the dielectric function of photon tunneling, tunneling of photons in turn affect the heat radiating near field of the main variables . Therefore, we can heat radiated by adjusting the near-field magnetic field strength to flexible regulation.

[0022] Near field radiation experiments mainly at room temperature, the performance of the magneto-optical ch...

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Abstract

The invention discloses a method and device for regulating near-field heat transfer by radiation of micro-nano flat plates through a magnetic field. According to the method, a layer of graphene is laid on each of the opposite faces of the two micro-nano flat plates and used for increasing the control range of the magnetic field on near-field heat transfer by radiation, and the near-field heat transfer by radiation of the micro-nano flat plates is regulated by adjusting thermal magnetic resistance or a gap between the two micro-nano flat plates. The device is provided with two InSb micro-nano flat plates with the same doping concentration and each with a thickness of 0.5 mm, a layer of graphene is laid on each of the opposite surfaces of the two InSb micro-nano flat plates, and the distance between the two layers of graphene is 10-300 nm. Near-field heat radiation is regulated through an external magnetic field, so that high efficiency, temperature independence and non-contact are achieved, non-contact active regulation of near-field heat transfer by radiation between micro-nano structures are achieved, and the method has application value for microelectronic devices or thermophotovoltaic devices and the like.

Description

Technical field [0001] The present invention relates to a method and apparatus for regulation of micro-nano plate by the magnetic field near-field radiation heat transfer. Background technique [0002] Near-field radiation heat transfer in many areas have a wide range of applications, such as thermal photovoltaic, thermal imaging, heat-assisted magnetic recording, thermal radiation cooling and management. In practical applications of how the flexibility to regulate the heat radiating near-field it has been the focus of a study. Currently, people have put a lot of effort to develop a near-field active heat control scheme, the gap between the objects is a direct and effective method of changing, however, the pitch at the nanometer level, in order to meet the requirements of the modulation effect, It must be accurately controlled (at sub-nanometer resolution should be), since the heat flux is very sensitive to changes in clearance gap, which is quite challenging. Change compared to ...

Claims

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Application Information

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IPC IPC(8): B81B7/00B81C1/00
CPCB81B7/0009B81B7/0083B81C1/0069
Inventor 何赛灵陈肇扬史可樟
Owner SOUTH CHINA NORMAL UNIVERSITY
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