Design of a metasurface-based dual-band Terahertz perfect absorber with very high Q-factors for sensing applications
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
DOI: 10.1016/j.optcom.2018.02.013
Abstract: Abstract We report on a novel very high Q -factor dual-band Terahertz perfect absorber composed of a metasurface located on top of a flexible polyimide spacer deposited on a silver ground layer. The metasurface is… read more here.
Keywords: dual band; band terahertz; perfect absorber; metasurface ... See more keywords
Tunable dual-band terahertz metalens based on stacked graphene metasurfaces
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
DOI: 10.1016/j.optcom.2018.07.084
Abstract: Abstract In this paper, we propose and theoretically investigate a tunable stacked graphene metasurface, which can independently manipulate electromagnetic field at different terahertz frequency. By tuning the Fermi levels of graphene ribbons, the designed two-layers… read more here.
Keywords: dual band; thz; tunable dual; band terahertz ... See more keywords
Muti-band terahertz modulator based on double metamaterial/perovskite hybrid structure
Sign Up to like & getrecommendations! Published in 2019 at "Optics Communications"
DOI: 10.1016/j.optcom.2019.04.079
Abstract: Abstract We proposed a novel multi-frequency-band terahertz modulator working for free-space terahertz radiation. The unit cell of the metamaterial/perovskite hybrid structure, which consists of split-ring resonator, is patterned on silica with a dielectric constant of… read more here.
Keywords: terahertz; structure; terahertz modulator; band terahertz ... See more keywords
Independently controllable dual-band terahertz metamaterial absorber exploiting graphene
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Physics D: Applied Physics"
DOI: 10.1088/1361-6463/ab132a
Abstract: In this paper, we demonstrate the design and characterization of a controllable dual-band terahertz metamaterial absorber formed by cascading a Salisbury-screen-like structure based on patterned graphene and a gold-graphene hybrid frequency selective surface. By electrostatically… read more here.
Keywords: controllable dual; dual band; terahertz; metamaterial absorber ... See more keywords
Numerical Simulation and Equivalent Circuit Model of Multi-Band Terahertz Absorber Composed of Double-Sided Graphene Comb Resonator Array
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Access"
DOI: 10.1109/access.2023.3265804
Abstract: Multi-band terahertz (THz) absorber based on a non-symmetric double-sided graphene comb resonator array is designed and simulated by the finite element method (FEM) in CST Software. Then, an equivalent circuit model (ECM) based on admittance… read more here.
Keywords: resonator array; absorber; band terahertz; model ... See more keywords
Wide Band Terahertz Switch of Undulated Waveguide With VO2 Film Coated Inner Wall
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2018.2858285
Abstract: We propose a wide band terahertz (THz) switch of undulated waveguide with vanadium dioxide (VO2 ) film coated inner wall. The forbidden bands formed by periodically undulated walls effectively restrain THz transmission when VO2 is… read more here.
Keywords: switch undulated; switch; band terahertz; wide band ... See more keywords
Design of a tunable dual-band terahertz absorber based on graphene metamaterial
Sign Up to like & getrecommendations! Published in 2018 at "Optical Engineering"
DOI: 10.1117/1.oe.57.11.117105
Abstract: Abstract. Based on the tunable electrical and optical properties of graphene, we propose a tunable dual-band graphene-based metamaterial terahertz (THz) absorber. It successively consists of two layers of graphene-ring arrays and a metal ground plate… read more here.
Keywords: design tunable; dual band; band terahertz; tunable dual ... See more keywords
Magnetically tunable dual-band terahertz absorption based on guided-mode resonance.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.457708
Abstract: We propose a magnetically tunable dual-band terahertz (THz) absorber by using an InAs substrate with a subwavelength zero-contrast germanium grating. The results demonstrate that the absorption peaks in this absorber can be dynamically tuned by… read more here.
Keywords: magnetically tunable; dual band; band terahertz; tunable dual ... See more keywords
Theoretical investigation of a five-band terahertz absorber based on an asymmetric split-ring resonator.
Sign Up to like & getrecommendations! Published in 2017 at "Applied optics"
DOI: 10.1364/ao.56.009601
Abstract: A simple five-band terahertz metamaterial perfect absorber, composed of an asymmetric double-gap square split ring and a metallic ground plate spaced by a thin polyimide dielectric layer, is proposed and theoretically investigated. The results show… read more here.
Keywords: split ring; five band; band terahertz;
Electrically tunable graphene-based multi-band terahertz metamaterial filters.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.477525
Abstract: In this study, we have designed an electrically tunable multi-band terahertz (THz) metamaterial filter based on graphene and multiple-square-loop structures. The structure contains multiple metal square loops, and these loops with different sizes correspond to… read more here.
Keywords: band; electrically tunable; filter; band terahertz ... 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