Ultra-broadband terahertz absorber based on a multilayer graphene metamaterial
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Applied Physics"
DOI: 10.1063/5.0019902
Abstract: An ultra-broadband absorber is introduced based on a multilayer graphene structure. Wave absorption of the optimized device is >90% in the bandwidth between 1.12 THz and 3.78 THz. Electric field distributions are studied to analyze the working… read more here.
Keywords: terahertz absorber; based multilayer; ultra broadband; multilayer graphene ... See more keywords
Switchable ultraband terahertz absorber and polarization converter using photoconductive silicon-assisted metasurface
Sign Up to like & getrecommendations! Published in 2021 at "Optical Engineering"
DOI: 10.1117/1.oe.60.12.127112
Abstract: Abstract. A bi-function switchable metasurface structure is proposed to realize dynamic switch function between ultrabroadband terahertz absorber and polarization converter. The structure consists of a SO2 hemisphere in a square lattice, two different radius hybrid… read more here.
Keywords: polarization converter; metasurface; silicon; terahertz absorber ... See more keywords
Wide-range tunable, dual-band, background refractive index insensitive terahertz absorber based on graphene and Dirac semimetal
Sign Up to like & getrecommendations! Published in 2021 at "Optical Engineering"
DOI: 10.1117/1.oe.60.2.027102
Abstract: Abstract. In this study, we propose a dual-band wide-range tunable terahertz absorber based on graphene and bulk Dirac semimetal (BDS), which consists of a patterned BDS array, dielectric material, continuous graphene layer, and gold mirror.… read more here.
Keywords: dual band; graphene; terahertz absorber; range tunable ... See more keywords
A dynamically tunable and wide-angle terahertz absorber based on graphene-dielectric grating
Sign Up to like & getrecommendations! Published in 2020 at "Modern Physics Letters B"
DOI: 10.1142/s0217984920502929
Abstract: We theoretically and numerically demonstrate a tunable and wide-angle terahertz absorber, which is composed of multilayer graphene-dielectric grating and bottom metal substrate. Numerical simulatio... read more here.
Keywords: terahertz absorber; dielectric grating; wide angle; graphene dielectric ... See more keywords
Switchable trifunctional terahertz absorber for both broadband and narrowband operations.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.476527
Abstract: In this paper, we proposed a multilayer terahertz absorber composed of hybrid graphene and vanadium dioxide (VO2). Based on electrical controlling of graphene and thermal tuning of VO2, three different switchable absorption states are achieved… read more here.
Keywords: vo2; terahertz absorber; absorption; broadband ... See more keywords
Multi-band terahertz absorber exploiting graphene metamaterial
Sign Up to like & getrecommendations! Published in 2018 at "Optical Materials Express"
DOI: 10.1364/ome.8.002928
Abstract: A dual-frequency broadband terahertz metamaterial absorber, composed of a periodically ellipse-shaped graphene array placed over a thin SiO2 layer and a lossy polyimide layer backed with a gold ground, is proposed in this article. The… read more here.
Keywords: terahertz absorber; thz thz; band terahertz; multi band ... See more keywords