论文标题
石墨烯 - 纳米线耦合等离膜额叶的热量控制
Active control of thermal emission by graphene-nanowire coupled plasmonic metasurfaces
论文作者
论文摘要
Metasurfaces与石墨烯等离子化合物一起在热工程中的发射率控制变得突出，无论是通过更改元时间的几何参数和堆积密度而被动地通过石墨烯传输或掺杂而积极的。我们演示了使用纳米线阵列和石墨烯的混合局部表面等离子体模式的石墨烯 - 纳米耦合等离质元面。纳米线阵列使混合表面等离子体模式局部定位，从而产生自由空间的激发。单层石墨烯通过镜下和顶部电极之间的门控可以主动调节光谱发射率将近90％。此外，混合等离子体模式提供了额外的自由度，可以以五倍的增强来调节P偏振的发射率，尤其是对于大发射角。
Metasurfaces, together with graphene plasmonics, have become prominent for the emissivity control in thermal engineering, both passively through changing the geometric parameters and packing density of the metasurfaces, and actively through graphene gating or doping. We demonstrate a graphene-nanowire coupled plasmonic metasurface utilizing the hybrid localized surface plasmon modes of the nanowire array and graphene. The nanowire array makes the hybrid surface plasmon mode localized, allowing a free-space excitation. The single layer graphene, via the gating between the underneath mirror and a top electrode, can actively tune the spectral emissivity by almost 90%. In addition, the hybrid plasmon mode provides an extra degree of freedom to modulate the p-polarized emissivity with a five-fold enhancement, especially for large emission angles.
