论文标题
设计规则，用于使用相变材料对窄带热排放的主动控制规则
Design rules for active control of narrowband thermal emission using phase-change materials
论文作者
论文摘要
我们提出了一个分析框架，以在红外频率下设计可主动调谐的窄带热发射器。我们考虑使用相位变换材料（PCM）来体现所提出的设计规则，考虑使用介电到二电位PCM（例如GSST）和电介质到金属PCM（例如$ \ Mathrm {vo_2} $）。基于这些，我们分别在数值上说明了两个发射波长之间的近乎统一的开关开关和任意较大的光谱转移。所提出的系统不含光刻，由一个或几个薄的发射极层组成，一个包括PCM在内的间隔层和一个背面反射器。我们的模型适用于正常的发病率，尽管我们表明该行为本质上是与角度无关的。提出的形式主义是一般的，可以扩展到\ textit {any}机制，该机制修改了材料的光学特性，例如静电门控或热光调制。
We propose an analytical framework to design actively tunable narrowband thermal emitters at infrared frequencies. We exemplify the proposed design rules using phase-change materials (PCM), considering dielectric-to-dielectric PCMs (e.g. GSST) and dielectric-to-metal PCMs (e.g. $\mathrm{VO_2}$). Based on these, we numerically illustrate near-unity ON-OFF switching and arbitrarily large spectral shifting between two emission wavelengths, respectively. The proposed systems are lithography-free and consist of one or several thin emitter layers, a spacer layer which includes the PCM, and a back reflector. Our model applies to normal incidence, though we show that the behavior is essentially angle-independent. The presented formalism is general and can be extended to \textit{any} mechanism that modifies the optical properties of a material, such as electrostatic gating or thermo-optical modulation.
