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首页> 外文期刊>International Journal of Heat and Mass Transfer >Near-field heat transfer between graphene-Si grating heterostructures with multiple magnetic-polaritons coupling
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Near-field heat transfer between graphene-Si grating heterostructures with multiple magnetic-polaritons coupling

机译：多重磁极耦合的石墨烯-硅光栅异质结构之间的近场传热

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摘要

Near-field thermal radiation (NFTR) between two graphene-covered Si grating (G/Si grating) heterostructures consisting of multilayered G/Si grating cells is investigated, in comparison with that between single-G/Si-grating-cell structures. The calculations are based on the scattering theory utilizing rigorous coupled-wave analysis (RCWA). It is found that strong magnetic polaritons (MPs) can be induced in the single G/Si grating cell, and coupling of multiple MPs can be observed in multilayered G/Si grating heterostructures, which leads to a broader band of high photon-tunnelling probabilities in the phase space. As a result, when the thickness of each grating layer is fixed, the heat flux of the 4-G/Si grating heterostructures, with chemical potential mu = 0.1 eV and grating period L-x = 80 nm, is 1.65- and 9.12-fold larger than those of the 1-G/Si grating and only Si grating structures at d = 100 nm, respectively. When the total thickness of the entire G/Si grating heterostructure is fixed, the 1-G/Si grating model performs better than 2- or 4-G/Si grating models because higher loss inherited from additional graphene sheets would reduce the momenta of the near-unity energy transmission coefficient in the k-space. (C) 2019 Published by Elsevier Ltd.
机译：与单G / Si光栅单元结构之间的近场热辐射（NFTR）进行了比较，研究了由多层G / Si光栅单元组成的两个石墨烯覆盖的Si光栅（G / Si光栅）异质结构之间的近场热辐射。这些计算基于使用严格耦合波分析（RCWA）的散射理论。发现在单个G / Si光栅单元中可以诱导强磁极化子（MPs），并且在多层G / Si光栅异质结构中可以观察到多个MPs的耦合，这导致高光子隧穿概率的谱带更宽在相空间中。结果，当每个光栅层的厚度固定时，化学势为mu = 0.1 eV并且光栅周期为Lx = 80 nm的4-G / Si光栅异质结构的热通量分别为1.65和9.12倍分别比d = 100 nm时的1-G / Si光栅和仅Si光栅结构要好。当整个G / Si光栅异质结构的总厚度固定时，1-G / Si光栅模型的性能优于2-G或4-G / Si光栅模型，因为从其他石墨烯片继承的更高损耗会降低薄膜的动量。 k空间中的近统一能量传输系数。 （C）2019由Elsevier Ltd.发布

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2019年第5期|1119-1126|共8页
  • 作者

    Shi K. Z.; Bao F. L.; He N.; He S. L.;

  • 作者单位

    South China Normal Univ, South China Acad Adv Optoelect, ZJU SCNU Joint Ctr Photon, Ctr Opt & Electromagnet Res, Guangzhou 510006, Guangdong, Peoples R China|Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310058, Zhejiang, Peoples R China;

    South China Normal Univ, South China Acad Adv Optoelect, ZJU SCNU Joint Ctr Photon, Ctr Opt & Electromagnet Res, Guangzhou 510006, Guangdong, Peoples R China;

    Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310058, Zhejiang, Peoples R China;

    South China Normal Univ, South China Acad Adv Optoelect, ZJU SCNU Joint Ctr Photon, Ctr Opt & Electromagnet Res, Guangzhou 510006, Guangdong, Peoples R China|Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310058, Zhejiang, Peoples R China|Royal Inst Technol, Sch Elect Engn, Dept Electromagnet Engn, S-10044 Stockholm, Sweden;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Near-field thermal radiation; Graphene-Si grating heterostructures; Multiple magnetic polaritons; Surface plasmon polaritons;

    机译：近场热辐射石墨烯-硅栅异质结构多重磁极化子表面等离子体激元;

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