Results 41 to 50 of about 10,280 (166)
Dynamic beam steering with all-dielectric electro-optic III–V multiple-quantum-well metasurfaces
Nature Communications, 2019 Here, the authors demonstrate an electrically tunable metasurface with III–V semiconducting MQW structures as resonant metasurface elements. The amplitude and phase of the light reflected from the metasurface can be continuously tuned by applying DC ...
Pin Chieh Wu +8 more
doaj +1 more source
Control Electromagnetic Waves Based on Multi-Layered Transparent Metasurface
Frontiers in Physics, 2019 Metasurface was presented to be the two-dimensional analogs of metamaterials that regulate the beam by adjusting the phase and amplitude of the wavefront.
Zhichao Sun +3 more
doaj +1 more source
IEEE Access, 2019 In this paper, high-order orbital angular momentum (OAM) vortex beams (OAMVBs) are generated using reflective metasurface. Generating high-order OAMVBs using traditional reflective metasurface methods deteriorates the radiation performance that affects ...
Zaid Akram +7 more
doaj +1 more source
Active nonlocal metasurfaces [PDF]
Nanophotonics, 2020 Abstract Actively tunable and reconfigurable wavefront shaping by optical metasurfaces poses a significant technical challenge often requiring unconventional materials engineering and nanofabrication. Most wavefront‐shaping metasurfaces can be considered “local” in that their operation depends on the responses of individual meta‐units.
Stephanie C. Malek +3 more
openaire +4 more sources
Highly Birefringent Terahertz Metasurfaces Based on a Liquid-Crystal-Embedded Metal Mesh
IEEE Photonics Journal, 2022 Here, we report a metasurface for polarization converters in the terahertz (THz) spectral range. The THz metasurface consists of a metal mesh with subwavelength isotropic apertures and a nematic liquid crystal (LC) that is a uniaxially anisotropic ...
Tomoyuki Sasaki +6 more
doaj +1 more source
Cancer Diagnosis Using Terahertz-Graphene-Metasurface-Based Biosensor with Dual-Resonance Response
Nanomaterials, 2022 Owing to the outstanding physical properties of graphene, its biosensing applications implemented by the terahertz metasurface are widely concerned and studied.
Chunjian Tan +6 more
doaj +1 more source
Hybrid Checkerboard Metasurface Combining Passive and Active AMCs [PDF]
Journal of Electromagnetic Engineering and ScienceIn this paper, a hybrid checkerboard metasurface is proposed for controlling radar cross-sections (RCSs) using a small number of active devices. The proposed metasurface consists of passive and active artificial magnetic conductors.
Sung Hoe Kim +3 more
doaj +1 more source
Physical layer superimposed dual-band metasurface encryption
Defence TechnologyMetasurface holographic imaging offers advantages such as high spatial resolution and precise image reconstruction, making it highly promising for applications in metasurface encryption.
Chenxia Li +7 more
doaj +1 more source
A Four-leaf Clover-shaped Coding Metasurface For Ultra-wideband Diffusion-like Scattering
Leida xuebao, 2021 In this paper, a novel four-leaf clover-shaped coding metasurface is proposed and applied to achieve an ultra-wideband diffusion-like scattering.
Saifullah YASIR, Guomin YANG, Feng XU
doaj +1 more source
Dielectric Meta-Atoms with Liquid Crystal Alignment Effect for Electrically Tunable Metasurface
Advanced Devices & InstrumentationDielectric metasurfaces with tunable functions are increasingly appealing to both the academia and industrial communities. Among the many tuning mechanisms reported so far, metasurface immersed in liquid crystal (LC) stands out as one of the most viable ...
Xin Chang +5 more
doaj +1 more source