Contribution of terahertz waves to near-field radiative heat transfer between graphene-based hyperbolic metamaterials

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英文篇名：Contribution of terahertz waves to near-field radiative heat transfer between graphene-based hyperbolic metamaterials 作者：赵启梅 ; 王同标 ; 张德建 ; 刘文兴 ; 于天宝 ; 廖清华 ; 刘念华 英文作者：Qi-Mei Zhao;Tong-Biao Wang;De-Jian Zhang;Wen-Xing Liu;Tian-Bao Yu;Qing-Hua Liao;Nian-Hua Liu;Department of Physics, Nanchang University;Institute for Advanced Study, Nanchang University; 英文关键词：radiative heat transfer;;graphene;;hyperbolic metamaterials 中文刊名：ZGWL 英文刊名：中国物理B 机构：Department of Physics, Nanchang University;Institute for Advanced Study, Nanchang University; 出版日期：2018-09-15 出版单位：Chinese Physics B 年：2018 期：v.27 基金：Project supported by the National Natural Science Foundation of China(Grant Nos.11704175,11664024,and 61367006) 语种：英文; 页：ZGWL201809051 页数：6 CN：09 ISSN：11-5639/O4 分类号：358-363

摘要

Hyperbolic metamaterials alternately stacked by graphene and silicon(Si) are proposed and theoretically studied to investigate the contribution of terahertz(THz) waves to near-field radiative transfer. The results show that the heat transfer coefficient can be enhanced several times in a certain THz frequency range compared with that between graphene-covered Si bulks because of the presence of a continuum of hyperbolic modes. Moreover, the radiative heat transfer can also be enhanced remarkably for the proposed structure even in the whole THz range. The hyperbolic dispersion of the graphenebased hyperbolic metamaterial can be tuned by varying the chemical potential or the thickness of Si, with the tunability of optical conductivity and the chemical potential of graphene fixed. We also demonstrate that the radiative heat transfer can be actively controlled in the THz frequency range.
        Hyperbolic metamaterials alternately stacked by graphene and silicon(Si) are proposed and theoretically studied to investigate the contribution of terahertz(THz) waves to near-field radiative transfer. The results show that the heat transfer coefficient can be enhanced several times in a certain THz frequency range compared with that between graphene-covered Si bulks because of the presence of a continuum of hyperbolic modes. Moreover, the radiative heat transfer can also be enhanced remarkably for the proposed structure even in the whole THz range. The hyperbolic dispersion of the graphenebased hyperbolic metamaterial can be tuned by varying the chemical potential or the thickness of Si, with the tunability of optical conductivity and the chemical potential of graphene fixed. We also demonstrate that the radiative heat transfer can be actively controlled in the THz frequency range.

引文

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