Results 31 to 40 of about 2,328 (261)
Graphene metasurface based broad band absorber for terahertz sensing applications
Measurement: Sensors, 2023 In this article, a graphene metamaterial based absorber is proposed for controlling and modulating EM waves at terahertz frequency range. Here, we introduced an absorber that can absorb THz radiation over a wide bandwidth of roughly 2.5 THz.
Prasad Nagandla +2 more
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THz-metamaterial absorbers [PDF]
Advances in Natural Sciences: Nanoscience and Nanotechnology, 2013 An ultrabroad-band metamaterial absorber was investigated in mid-IR regime based on a similar model in previous work. The high absorption of metamaterial was obtained in a band of 8?11.7?THz with energy loss distributed in SiO2, which is appropriate potentially for solar-cell applications.
Van Tuong Pham +6 more
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A Naked Eye Refractive Index Sensor with a Visible Multiple Peak Metamaterial Absorber
Sensors, 2015 We report a naked eye refractive index sensor with a visible metamaterial absorber. The visible metamaterial absorber consisting of a silver dendritic/dielectric/metal structure shows multiple absorption peaks. By incorporating a gain material (rhodamine
Heli Ma +3 more
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Results in Physics, 2022 The infrared radiation of the target and scene needs to be transmitted through the surface atmosphere, and it can be detected by infrared thermal imaging equipment. The mid-wave infrared band (MWIR, 3–5 μm) and the long-wave infrared band (LWIR, 8–14 μm)
Xiaoyan shi +9 more
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Broadband Metamaterial Absorbers
Advanced Optical Materials, 2018 AbstractThe recent rise of metamaterials opens new opportunities for absorbers due to their designed electrodynamic properties and effects, allowing the creation of materials with effective values of permittivity and permeability that are not available in naturally occurring materials.
Peng Yu +9 more
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PhotonicsIn order to establish a general design methodology for water-based electromagnetic metamaterial absorber microstructures, a topology optimization method for water-based metamaterial absorber microstructures design was proposed in this paper. According to
Pengfei Shi +6 more
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Right-Angle Shaped Elements as Dual-Band Metamaterial Absorber in Terahertz
Photonic Sensors, 2019 Metamaterial absorbers display potential applications in the field of photonics and have been investigated extensively during the last decade. We propose a dual-band resonant metamaterial absorber with right-angle shaped elements (RAEs) in the terahertz ...
Salman Daniel, Prince Bawuah
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Design of metamaterial surfaces with broadband absorbance [PDF]
Optics Letters, 2012 A simple design paradigm for making broad-band ultra-thin plasmonic absorbers is introduced. The absorber's unit cell is composed of sub-units of various sizes, resulting in nearly 100% absorbance at multiple adjacent frequencies and high absorbance over a broad frequency range. A simple theoretical model for designing broad-band absorbers is presented.
Wu, Chihhui, Shvets, Gennady
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A tunable metamaterial absorber using varactor diodes
New Journal of Physics, 2013 We present the design, analysis and measurements of a polarization-insensitive tunable metamaterial absorber with varactor diodes embedded between metamaterial units.
Jie Zhao +5 more
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Terahertz multi-band absorber and dual-bandwidth polarization converter based on VO2 and graphene
Results in Physics, 2023 A terahertz metamaterial with multiple functions is proposed based on patterned graphene, concentric gold rings and gold columns, and vanadium dioxide (VO2).
Yang Jia +5 more
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