首页> 外国专利> Electrically controllable and tunable electromagnetic-field absorber/emitter using graphene/2D material multilayer nanostructures

Electrically controllable and tunable electromagnetic-field absorber/emitter using graphene/2D material multilayer nanostructures

机译:使用石墨烯/ 2D材料多层纳米结构电控制和可调谐电磁场吸收器/发射器

摘要

An electrically controllable and tunable electromagnetic-field absorber/thermal emitter is invented using graphene/two-dimensional materials based multilayer nanostructures that have the absorption efficiency of unity at mid-infrared wavelengths. Alternating layers of graphene and hexagonal boron nitride are deposited between support materials and grown on a substrate. Tungsten may be used as the substrate, and silicon carbide as the support material; or, silicon may be used as the substrate and tungsten disulfide as the support material depending on the operating frequencies and ambient temperature. The invention demonstrates a selectable, tunable and switchable electromagnetic-field absorption or thermal emission by changing a DC bias that alters the chemical potential of the graphene layers and thereby the optical response of the multilayer nanostructures.
机译:使用基于石墨烯/二维材料的多层纳米结构来发明电可控和可调谐电磁场吸收/热发射器,其在中红外波长处具有统一的吸收效率。 石墨烯和六边形氮化硼的交替层沉积在载体材料之间并在基材上生长。 钨可以用作基材,碳化硅作为支撑材料; 或者,根据操作频率和环境温度,硅可以用作作为支撑材料的基材和钨硫化物。 本发明通过改变改变石墨烯层的化学电位的直流偏压并采取多层纳米结构的光学响应来说明可选择的,可调谐和可切换的电磁场吸收或热发射。

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