论文标题
基于磁极的热发射器，用于双带滤波器的气体传感
Magnetic polariton-based thermal emitter for dual-band filterless gas sensing
论文作者
论文摘要
昂贵且笨重的激光源以及光过滤器的使用，红外气体传感器的微型化在很大程度上受到了阻碍。在这项工作中，我们提出了一个基于紧凑的W-Si-Cu元信息的双波段，定向热发射器，以解决此问题。该跨表面发射极旨在支持两种表现出不同方向性发射曲线的非分散磁极模式，从而无需光滤波器就可以实现双波段检测。具体而言，我们通过将元表发射极转化为二氧化碳传感来评估这种双带滤波器检测的可行性。传感系统的模型显示出CO2的选择性相对灵敏度，比使用黑体发射极高的3.2倍，并且发射极温度的相对敏感性约为1.32％/k。
The miniaturization of infrared gas sensors is largely hindered by expensive and bulky laser sources as well as the use of optical filters. In this work, we propose a dual-band, directional thermal emitter based on compact W-Si-Cu metasurfaces to address this issue. This metasurface emitter is designed to support two nondispersive magnetic polariton modes that exhibit distinct directional thermal emission profiles, thus enabling dual-band detection without the need of optical filters. Specifically, we evaluate the feasibility of such dual-band filterless detection by adapting the metasurface emitter to CO2 sensing. The model of sensing system shows a selective relative sensitivity of CO2 which is 3.2 times higher than that using a blackbody emitter, and a relative sensitivity of temperature of emitter about 1.32%/K.
