论文部分内容阅读
We theoretically present a concise and tunable dual-band metamaterial absorber composed of a typical metaldielectric-metal structure in the terahertz regime.The dual-band absorption originates from two different resonance modes induced in one square ring,which is different from the common dual-band absorber composed of a super unit with several different-sized structures.The proposed absorber can realize dynamic tunability through changing the permittivity of the dielectric layer by applying different temperatures.Other good performances,such as a wide incident angle and polarization insensitivity,are also available for the proposed absorber.Such a metamaterial absorber is a promising candidate for terahertz imaging and detection.
We theoretically present a concise and tunable dual-band metamaterial absorber composed of a typical metal dielectric-metal structure in the terahertz regime. The dual-band absorption originates from two different resonance modes induced in one square ring, which is different from the common dual- band absorber composed of a super unit with several different-sized structures. the proposed absorber can realize dynamic tunability through changing the permittivity of the dielectric layer by applying different temperatures. some good performances, such as a wide incident angle and polarization insensitivity, are also available for the proposed absorber.Such a metamaterial absorber is a promising candidate for terahertz imaging and detection.