Terahertz metamaterials and metasurfaces
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Terahertz metamaterials and metasurfaces
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Web1 day ago · The conversion from a low- to high-bit programmable metasurface using a spatiotemporal metasurface. • The space-time-coding metasurfaces aiding in the realization of the function of wide-band terahertz vortex beam generator switching according to the vortex phase arrangement and their combination with the convolution theory resulting in … WebApr 12, 2024 · Metasurfaces – functional materials endowed with unparalleled flexibility to manipulate light at the deep-subwavelength scale – provide a powerful platform for dynamic control of THz waves ...
WebFeb 1, 2024 · In this paper, we propose an ultra-high sensitivity terahertz senor based on tunable PIT effect in a simple monolayer graphene metasurface. A periodic structure of our designed metasurface is composed of a wide horizontal graphene and two graphene sheets as bright mode and dark mode, respectively. WebDec 14, 2024 · The active-circuit-coupled terahertz meta-element structure can be reconfigured, providing digitally programmable metasurfaces with amplitude and phase …
WebA uniform illumination over a screen is crucial for terahertz imaging. As such, conversion from a Gaussian beam to a flattop beam becomes necessary. Most of the current beam … WebFeb 18, 2024 · Metamaterials, artificially composed structures that can engineer the electromagnetic properties to manipulate the waves, have enabled the development of …
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WebNov 3, 2024 · Graphene-based metamaterials or metasurfaces are usually polarization sensitive and invalid for non-normal incidence, leading to the degradation and disappearance of the sensing capability . In this work, we propose a planar graphene metasurface, which is composed of a circular graphene ring and an H-shaped graphene … エクセル 格安 ダウンロードWebApr 6, 2024 · Terahertz waves, the electromagnetic wave with frequencies ranging from 0.1 to 10 THz (λ = 30 µm–3 mm), are in the middle of the electromagnetic spectrum between microwave and far-infrared waves.Terahertz waves have unique advantages, such as high transmission and low energy, and are suitable for biosensing applications [1, 2].Many … エクセル 桁数をそろえるWebNatural materials usually have limited interactions with terahertz waves and would require large material thickness or high drive voltage to obtain a significant modulation depth. … pamela galera riversideWebMar 2, 2015 · Recently, metasurfaces operating in the THz frequency range have been used in chemical and biological sensing with enhanced sensitivities to microenvironmental variations, by taking advantage of... pamela garcia lemon grove caエクセル 桁数 カウントWebApr 12, 2024 · Metasurfaces – functional materials endowed with unparalleled flexibility to manipulate light at the deep-subwavelength scale – provide a powerful platform for … pamela gagnon crossfitWebSep 25, 2024 · Metasurfaces employed for terahertz manipulation of phase, amplitude, or polarization of terahertz waves have limitations in radiation efficiency which is attributed to losses in the materials constituting the devices. エクセル 桁数をそろえる 0