Results 31 to 40 of about 36,989 (273)
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
Leaky-Wave antennas with arbitrary radiation based on bianisotropic Huygens’ metasurfaces [PDF]
, 2018 In this contribution, we present the application of Huygens’ metasurfaces (HMS) to the arbitrary design of leaky-wave antennas (LWAs). These metasurfaces have demonstrated their capabiity to tailor the electromagnetic waves at will. We use them to design
Abdo-Sánchez, Elena +2 more
core +1 more source
Metasurface polarization splitter [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2017 Polarization beam splitters, devices that separate the two orthogonal polarizations of light into different propagation directions, are among the most ubiquitous optical elements. However, traditionally polarization splitters rely on bulky optical materials, while emerging optoelectronic and photonic circuits require compact, chip-scale polarization ...
Brian A. Slovick +7 more
openaire +4 more sources
Large enhancement of the effective second-order nonlinearity in graphene metasurfaces [PDF]
, 2019 Using a powerful homogenization technique, one- and two-dimensional graphene metasurfaces are homogenized both at the fundamental frequency (FF) and second harmonic (SH).
Panoiu, N. C., Ren, Qun, You, J. W.
core +2 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
Multiwavelength polarization insensitive lenses based on dielectric metasurfaces with meta-molecules [PDF]
, 2016 Metasurfaces are nano-structured devices composed of arrays of subwavelength scatterers (or meta-atoms) that manipulate the wavefront, polarization, or intensity of light.
Arbabi, Amir +4 more
core +3 more sources
Light-emitting metasurfaces [PDF]
Nanophotonics, 2019 Abstract Photonic metasurfaces, that is, two-dimensional arrangements of designed plasmonic or dielectric resonant scatterers, have been established as a successful concept for controlling light fields at the nanoscale. While the majority of research so far has concentrated on passive metasurfaces, the direct integration of nanoscale ...
Aleksandr Vaskin +3 more
openaire +3 more sources
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
Horn-like space-coiling metamaterials toward simultaneous phase and amplitude modulation [PDF]
, 2018 Acoustic metasurfaces represent a family of planar wavefront-shaping devices garnering increasing attention due to their capacity for novel acoustic wave manipulation.
Anderson, Stephan +4 more
core +2 more sources
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