title: Infrared perfect absorber based on nanowire metamaterial cavities.
abstract: An infrared perfect absorber based on a gold nanowire metamaterial cavities array on a gold ground plane is designed. The metamaterial made of gold nanowires embedded in an alumina host exhibits an effective permittivity with strong anisotropy, which supports cavity resonant modes of both electric dipole and magnetic dipole. The impedance of the cavity modes matches the incident plane wave in free space, leading to nearly perfect light absorption. The incident optical energy is efficiently converted into heat so that the local temperature of the absorber will increase. Results show that the designed absorber is polarization-insensitive and nearly omnidirectional for the incident angle.
authors.affiliation: Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409, USA.
authors.forename: Yingran
authors.initials: Y
authors.lastname: He
authors.forename: Huixu
authors.initials: H
authors.lastname: Deng
authors.forename: Xiangyang
authors.initials: X
authors.lastname: Jiao
authors.forename: Sailing
authors.initials: S
authors.lastname: He
authors.forename: Jie
authors.initials: J
authors.lastname: Gao
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Yang