论文标题
通过基于材料的高阻抗表面启用的光谱稳定的热发射器
Spectrally stable thermal emitters enabled by material-based high-impedance surfaces
论文作者
论文摘要
辐射热工程具有次波长金属物体是热量和能量管理应用，通信和传感的关键要素。在这里，我们在数值和实验上证明了具有窄带但极为稳定的发射光谱的金属热发射器，其谐振频率不会随纳米膜厚度的变化，观察角和/或极化而变化。我们的设备基于Epsilon-Near-Zero（ENZ）底物，充当基于物质的高阻抗底物。它们不需要复杂的纳米化过程，因此与大区域和低成本应用兼容。
Radiative thermal engineering with subwavelength metallic bodies is a key element for heat and energy management applications, communication and sensing. Here, we numerically and experimentally demonstrate metallic thermal emitters with narrowband but extremely stable emission spectra, whose resonant frequency does not shift with changes on the nanofilm thickness, the angle of observation and/or polarization. Our devices are based on epsilon-near-zero (ENZ) substrates acting as material-based high-impedance substrates. They do not require from complex nanofabrication processes, thus being compatible with large-area and low-cost applications.
