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

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 ...

AI Technical Summary

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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