Manipulation of nonreciprocal radiative heat transfer in a two-body system composed of graphene-covered hBN metasurfaces

IF 5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Heat and Mass Transfer Pub Date : 2025-05-20 DOI:10.1016/j.ijheatmasstransfer.2025.127271

Bosen Chen , Haishan Tian , Leyong Jiang , Xiaohu Wu

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引用次数: 0

Abstract

Active manipulation of near-field radiative heat transfer (NFRHT) has important application prospects in thermal management and energy conversion. In this paper, we explore nonreciprocal NFRHT in a two-body system, which consists of graphene-covered hexagonal boron nitride (hBN) metasurfaces. Our results indicate that the strong coupling between nonreciprocal surface plasmon polaritons (NSPPs) in graphene and hyperbolic phonon polaritons (HPPs) in the hBN metasurface confers a unique advantage to the use of a drift bias current for manipulating NFRHT. When the vacuum gap is below a specific threshold, increasing the drift current velocity enhances the heat transfer coefficient (HTC) by several times its initial value. Furthermore, numerical simulations reveal that variations in drift current velocity directly affect both the dispersion relationship and photon transmission coefficient (PTC) distribution of NSPPs, thereby enabling effective manipulation of NFRHT. Additionally, we examined how graphene's chemical potential and the filling fraction of hBN metasurfaces influence radiative heat transfer. Given the critical importance of diverse control strategies for NFRHT in micro‐ and nanoscale thermal radiation devices, we believe that this study serves as a valuable reference for advancing efficient thermal management systems.

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由石墨烯覆盖的hBN超表面组成的两体系统中非互反辐射传热的操纵

主动操纵近场辐射换热在热管理和能量转换方面具有重要的应用前景。在本文中，我们研究了由石墨烯覆盖的六方氮化硼（hBN）超表面组成的两体系统中的非互易NFRHT。我们的研究结果表明，石墨烯中的非互易表面等离子体激元（NSPPs）和hBN超表面中的双曲声子激元（HPPs）之间的强耦合为使用漂移偏置电流来操纵NFRHT提供了独特的优势。当真空间隙小于某一特定阈值时，增加漂移速度可使传热系数（HTC）提高数倍于其初始值。此外，数值模拟表明，漂移速度的变化直接影响了NSPPs的色散关系和光子透射系数（PTC）分布，从而可以有效地控制NFRHT。此外，我们研究了石墨烯的化学势和hBN超表面的填充分数如何影响辐射传热。考虑到在微纳米级热辐射器件中不同的NFRHT控制策略的重要性，我们相信本研究为推进高效的热管理系统提供了有价值的参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Heat and Mass Transfer 工程技术-工程：机械

CiteScore

10.30

自引率

13.50%

发文量

1319

审稿时长

41 days

期刊介绍： International Journal of Heat and Mass Transfer is the vehicle for the exchange of basic ideas in heat and mass transfer between research workers and engineers throughout the world. It focuses on both analytical and experimental research, with an emphasis on contributions which increase the basic understanding of transfer processes and their application to engineering problems. Topics include: -New methods of measuring and/or correlating transport-property data -Energy engineering -Environmental applications of heat and/or mass transfer