Terahertz metamaterial absorbers
WebAug 10, 2024 · A TMA consists of a 2-dimensional or 3-dimensional periodic arrangement of unit cells that can absorb the incident electromagnetic radiation. Ideally, these absorbers should be able to absorb the radiation irrespective … WebJan 13, 2024 · We propose a functionally tunable terahertz (THz) metamaterial absorber, which has the switching performance between broadband-narrowband and dual-broadband near-perfect absorption due to the phase transition of Vanadium dioxide (VO2) and the tunable electrical property of graphene. The switching absorption properties are verified …
Terahertz metamaterial absorbers
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WebAlthough the designing of graphene-based tunable broadband terahertz (THz) absorbers are relatively developed, it is rarely described how to establish linkages between the absorption window and intensity tunability. ... Experimental demonstration of terahertz metamaterial absorbers with a broad and flat high absorption band. Opt. Lett., 37 (2 ... WebMar 1, 2013 · Second, metamaterial absorbers with various sizes were fabricated and the absorption property was measured in terahertz frequency region. 90% of absorption was …
WebJul 1, 2024 · This work theoretically and numerically investigated two approaches for active modulation of metamaterial absorbers in the terahertz region with simple structures based on InSb thin films. The patterned InSb film is attached to Teflon dielectric layer with a metallic plate on the back. WebAug 1, 2024 · A polarization-insensitive and absorption-tunable ultra-broadband terahertz metamaterial absorbers based on multiple split resonance rings (SRRs) are designed. …
WebSep 30, 2024 · The terahertz metamaterials sensor is an emerging technology, which is based on a surface plasmon polaritons (SPPs)-like effect, which explains the possibility of generating SPPs in the... WebMetamaterial absorbers have attracted considerable attention for applications in the terahertz range. In this Letter, we report the design, fabrication, and characterization of a terahertz dual band metamaterial absorber that shows two distinct absorption peaks with high absorption.
WebMar 1, 2024 · Han et al. designed an ultra-broadband terahertz absorber, which exhibited over 90% absorptivity within 1.14 ∼ 3.31 THz with a relative absorption bandwidth up to 97.5%. The absorptivity can be tuned from 14% to near-perfect by changing the graphene chemical potential through external bias voltage [13].
WebDec 17, 2024 · Metamaterial absorber applications used in stealth technology should be protected from external environments, such as wind pressure, bird strike, and weather conditions, as well as be... speech acts opera diWebSep 14, 2024 · In this paper, a photo-excited switchable terahertz metamaterial (MM) polarization converter/absorber has been presented. The switchable structure comprises an orthogonal double split-ring resonator (ODSRR) and a metallic ground, separated by a dielectric spacer. speech acts in pragmaticsWebAlthough the designing of graphene-based tunable broadband terahertz (THz) absorbers are relatively developed, it is rarely described how to establish linkages between the … speech acts john searleWebA terahertz metamaterial is a class of composite metamaterials designed to interact at terahertz (THz) frequencies. The terahertz frequency range used in materials research … speech acts performativesWebJan 15, 2011 · A metamaterial that acts as a strongly resonant absorber at terahertz frequencies using a bilayer unit cell which allows for maximization of the absorption through independent tuning of the electrical permittivity and magnetic permeability is presented. 1,152 PDF Highly-flexible wide angle of incidence terahertz metamaterial absorber speech acts pdfWebDynamically tunable terahertz metamaterial absorbers integrating with active materials have been widely explored. However, there are still problems that need to be urgently solved, such as modulation depth deficiency, a lack of multiparameter-tunable characteristics, and so on. In this paper, a multiparameter-tunable terahertz absorber … speech acts quizWebApr 29, 2024 · Metamaterial based terahertz absorbers have been designed in the recent years. Single, multi-band, broad band, and Graphene based terahertz metamaterial absorbers have been proposed by the... speech acts within facebook status messages