A thermal emitter composed of a frequency-selective surface metamaterial layer and a hexagonal boron nitride-encapsulated graphene filament is demonstrated. The broadband thermal emission of the metamaterial (consisting of ring resonators) was tailored into two discrete bands, and the measured reflection and emission spectra agreed well with the simulation results. The high modulation frequencies that can be obtained in these devices, coupled with their operation in air, confirm their feasibility for use in applications such as gas sensing.

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中文翻译：

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基于超材料的石墨烯热发射器

说明了由频率选择表面超材料层和六方氮化硼封装的石墨烯灯丝组成的散热体。将超材料（由环形谐振器组成）的宽带热发射量身定制为两个离散频带，并且测得的反射和发射光谱与模拟结果吻合得很好。在这些设备中可以获得的高调制频率，再加上它们在空气中的运行，证实了它们在诸如气体传感之类的应用中的可行性。

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