"Metamaterial-based graphene thermal emitter" by Cheng Shi, Nathan H. Mahlmeister et al.

Article Title

Metamaterial-based graphene thermal emitter

Authors

Cheng Shi, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, EX4 4QF, UK
Nathan H. Mahlmeister, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, EX4 4QF, UK
Isaac J. Luxmoore, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, EX4 4QF, UK
Geoffrey R. Nash, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, EX4 4QF, UK

Keywords

graphene, hexagonal boron nitride, thermal emitter, infrared, metamaterial

Abstract

ABSTRACT 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.