Results 21 to 30 of about 9,836,724 (331)
Single-layer phase gradient mmWave metasurface for incident angle independent focusing. [PDF]
Sci Rep, 2021 Metasurfaces allow the rapid development of compact and flat electromagnetic devices owing to their capability in manipulating the wavefront of electromagnetic waves.
Lee W +8 more
europepmc +2 more sources
Phase-Gradient Huygens’ Metasurface Coatings for Dynamic Beamforming in Linear Antennas [PDF]
IEEE Transactions on Antennas and Propagation, 2023 The beamforming capabilities of conformal cylindrical Huygens metasurface (HMS) coatings for linear antennas are assessed. It is shown that by engineering the phase-gradient profile of the HMS, the original omnidirectional radiation pattern of the linear
S. Vellucci +5 more
semanticscholar +1 more source
Sound vortex diffraction via topological charge in phase gradient metagratings. [PDF]
Sci Adv, 2020 Artificial topological charge designed by azimuthal metagratings can be used to control sound vortex diffraction. Wave fields with orbital angular momentum (OAM) have been widely investigated in metasurfaces.
Fu Y +6 more
europepmc +2 more sources
Phase-field gradient theory [PDF]
Zeitschrift für angewandte Mathematik und Physik, 2021 Published by Springer International Publishing AG, Cham (ZG)
Espath, Luis Felipe da Rosa +1 more
openaire +5 more sources
Determining the Phase Gradient Parameter of Three-Dimensional Polymorphic Beams
Frontiers in Physics, 2022 Three-dimensional polymorphic beams (3D PBs) with arbitrary 3D curves have drawn increasing attention. In this paper, we introduce the concept of phase gradient parameter (PGP) to describe the accumulation of phase along the curvilinear trajectory of a ...
Xue Yun +15 more
doaj +1 more source
Design of Anomalous Reflectors by Phase Gradient Unit Cell-Based Digitally Coded Metasurface
IEEE Antennas and Wireless Propagation Letters, 2023 In this letter, we propose the designs of 1-bit and 2-bit digitally coded metasurfaces, which achieve anomalous reflection-based beam steering. First, we demonstrate the systematic design flow of coded metasurface using phase gradient digital unit cells ...
Raju Malleboina, J. C. Dash, D. Sarkar
semanticscholar +1 more source
Dynamic Chiral Metasurfaces for Broadband Phase‐Gradient Holographic Displays
Advanced Optical Materials, 2023 Next‐generation holographic displays have promising applications in medical science, augmented/virtual reality, smart security, data encryption, etc.
Taimoor Naeem +8 more
semanticscholar +1 more source
Optical Spin Hall Effect in Closed Elliptical Plasmonic Nanoslit with Noncircular Symmetry
Nanomaterials, 2021 We investigated the optical spin Hall effect (OSHE) of the light field from a closed elliptical metallic curvilinear nanoslit instead of the usual truncated curvilinear nanoslit.
Xiaorong Ren +9 more
doaj +1 more source
Detecting slow-moving landslides using InSAR phase-gradient stacking and deep-learning network
Frontiers in Environmental Science, 2022 Landslides are a major geohazard that endangers human lives and properties. Recently, efforts have been made to use Synthetic Aperture Radar Interferometry (InSAR) for landslide monitoring.
Lv Fu +5 more
semanticscholar +1 more source
IEEE Photonics Journal, 2020 We proposed a method for driving metal nanoparticles in the focal field by cylindrical metalens with phase gradient. It was found that the introduced gradient phase would not affect the formation of the focal line, where metal nanoparticles can be ...
Zhe Shen +3 more
doaj +1 more source