Chu Qiongqiong, Zhong Fan, Shang Xiaohe, Zhang Ye, Zhu Shining, Liu Hui
National Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, Jiangsu 210093, China.
School of Physics, Southeast University, Nanjing, Jiangsu 211189, China.
Nanophotonics. 2024 Jan 22;13(8):1279-1301. doi: 10.1515/nanoph-2023-0754. eCollection 2024 Apr.
Thermal emission caused by the thermal motion of the charged particles is commonly broadband, un-polarized, and incoherent, like a melting pot of electromagnetic waves, which makes it unsuitable for infrared applications in many cases requiring specific thermal emission properties. Metasurfaces, characterized by two-dimensional subwavelength artificial nanostructures, have been extensively investigated for their flexibility in tuning optical properties, which provide an ideal platform for shaping thermal emission. Recently, remarkable progress was achieved not only in tuning thermal emission in multiple degrees of freedom, such as wavelength, polarization, radiation angle, coherence, and so on but also in applications of compact and integrated optical devices. Here, we review the recent advances in the regulation of thermal emission through metasurfaces and corresponding infrared applications, such as infrared sensing, radiative cooling, and thermophotovoltaic devices.
由带电粒子的热运动引起的热发射通常是宽带的、非偏振的且非相干的，就像一锅电磁波，这使得它在许多需要特定热发射特性的情况下不适用于红外应用。超表面以二维亚波长人工纳米结构为特征，因其在调节光学特性方面的灵活性而受到广泛研究，这为塑造热发射提供了一个理想平台。最近，不仅在多个自由度上调节热发射方面取得了显著进展，如波长、偏振、辐射角、相干性等，而且在紧凑型和集成光学器件的应用方面也取得了显著进展。在这里，我们回顾了通过超表面调节热发射的最新进展以及相应的红外应用，如红外传感、辐射冷却和热光伏器件。
