Penetration depth in near-field radiative heat transfer between metamaterials
Penetration depth in near-field radiative heat transfer between metamaterials
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DOI：
10.1063/1.3646466
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发表时间：
2011-10
影响因子：
4
通讯作者：
S. Basu;M. Francoeur
中科院分区：
文献类型：
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作者：
S. Basu;M. Francoeur
在这封信中，我们调查的穿透深度在近场辐射传热的超材料之间的表面极化激元被激发时，在电和磁共振。分析表明，基于超材料的光学特性，可以定义两种不同的穿透深度对应于电和磁共振。根据超材料的散射率，可以选择性地增强或减小电共振和磁共振下的近场热辐射的穿透深度。研究结果将有助于超材料在近场能量收集中的应用。
In this letter, we investigate the penetration depth in near-field radiative heat transfer between metamaterials when surface polaritons are excited at both electrical and magnetic resonances. The analyses show that based on the optical properties of the metamaterial, two different penetration depths can be defined corresponding to electrical and magnetic resonances. Depending upon the scattering rate of the metamaterial, it is possible to selectively enhance or reduce the penetration depth of near-field thermal radiation at electric and magnetic resonances. The results obtained from this study will benefit applications of metamaterials in near-field energy harvesting.