نتایج جستجو برای: tunable absorber
تعداد نتایج: 34720 فیلتر نتایج به سال:
Plasmonic and metamaterial based nano/micro-structured materials enable spectrally selective resonant absorption, where the resonant bandwidth and absorption intensity can be engineered by controlling the size and geometry of nanostructures. Here, we demonstrate a simple, lithography-free approach for obtaining a resonant and dynamically tunable broadband absorber based on vanadium dioxide (VO2...
Tunable conductivity of graphene, makes it a promising material for metamaterials. There are various graphene tunable metamaterial absorbers in the mid-infrared region, whose absorption spectrum can be dynamically tuned by varying Fermi potential graphene. However, working low region (4–7 μm) has limited tuning. In this work, spectral tuning efficiency based metal disc pattern and ribbon absorb...
We propose a sub-wavelength range-based dual-band tunable ideal terahertz metamaterial perfect absorber. The absorber structure consists of three main layers, with the layer consisting metal I-shaped structure. By simulating incident wave absorbance structure, we found that has more than 99% absorption peaks in both bands. In addition, have investigated relationship between structural and geome...
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