Basu Soumyadipta, Francoeur Mathieu
Opt Lett. 2014 Mar 1;39(5):1266-9. doi: 10.1364/OL.39.001266.
We investigate near-field radiative heat transfer between two thin films made of metamaterials. The impact of film thickness on magnetic and electric surface polaritons (ESPs) is analyzed. It is found that the strength as well as the location of magnetic resonance does not change with film thickness until the film behaves as semi-infinite for the dielectric function chosen in this study. When the film is thinner than vacuum gap, both electric and magnetic polaritons contribute evenly to near-field radiative heat transfer. At larger film thicknesses, ESPs dominate heat transfer due to excitation of a larger number of modes. Results obtained from this study will facilitate applications of metamaterials as thin-film coatings for energy systems.
我们研究了由超材料制成的两个薄膜之间的近场辐射热传递。分析了薄膜厚度对磁表面极化子和电表面极化子（ESPs）的影响。结果发现，在本研究中所选择的介电函数条件下，直到薄膜表现为半无限大之前，磁共振的强度和位置都不会随薄膜厚度而变化。当薄膜比真空间隙薄时，电极化子和磁极化子对近场辐射热传递的贡献是均匀的。在更大的薄膜厚度下，由于激发了更多的模式，ESPs主导了热传递。本研究所得结果将有助于超材料作为能量系统薄膜涂层的应用。
