Fernández-Hurtado V, García-Vidal F J, Fan Shanhui, Cuevas J C
Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain.
Department of Electrical Engineering, and Ginzton Laboratory, Stanford University, Stanford, California 94305, USA.
Phys Rev Lett. 2017 May 19;118(20):203901. doi: 10.1103/PhysRevLett.118.203901. Epub 2017 May 15.
We demonstrate in this work that the use of metasurfaces provides a viable strategy to largely tune and enhance near-field radiative heat transfer between extended structures. In particular, using a rigorous coupled wave analysis, we predict that Si-based metasurfaces featuring two-dimensional periodic arrays of holes can exhibit a room-temperature near-field radiative heat conductance much larger than any unstructured material to date. We show that this enhancement, which takes place in a broad range of separations, relies on the possibility to largely tune the properties of the surface plasmon polaritons that dominate the radiative heat transfer in the near-field regime.
我们在这项工作中证明，超表面的使用为大幅调节和增强扩展结构之间的近场辐射热传递提供了一种可行的策略。特别是，通过严格的耦合波分析，我们预测具有二维周期性孔阵列的硅基超表面在室温下的近场辐射热导率比迄今为止任何无结构材料都要大得多。我们表明，这种增强在很宽的间距范围内都会发生，这依赖于在很大程度上调节主导近场区域辐射热传递的表面等离激元极化激元特性的可能性。
