Results 91 to 100 of about 4,317 (190)
One Metasurface for Four‐Channel Terahertz Wavefront Manipulation Based on Vanadium Dioxide
Advanced Physics Research, Volume 5, Issue 4, April 2026.This article presents a thermally reconfigurable metasurface utilizing vanadium dioxide (VO2) to dynamically switch between four independent wavefront‐manipulation channels. By synergizing geometric and propagation phases, the platform enables spin‐decoding for circularly polarized waves and polarization multiplexing for linearly polarized waves ...
Zhaofeng Yang +7 more
wiley +1 more source
Hybrid Metalens–Compressive Sensing Imaging System for Ultra‐Low‐Power Edge Detection
Nanophotonics, Volume 15, Issue 8, 24 April 2026.We propose an ultra‐low‐power edge detection imaging system through the combination of a spiral metalens and a compressive sensor. By moving the edge detection to a passive optical element, not only is the required power reduced but also the encoded edge image provides rich high‐frequency information, which provides high‐fidelity image reconstruction ...
Sejin Yoon +3 more
wiley +1 more source
Diffractive Optical Neural Networks: Pathways Toward Intelligent and Scalable Photonic Computing
Nanophotonics, Volume 15, Issue 8, 24 April 2026.Diffractive optical neural networks (DONNs) are emerging as a transformative paradigm for photonic computing, offering massive parallelism, ultrafast inference, and passive low‐power operation. This review traces the evolution of DONNs from free‐space to on‐chip implementations, highlights advances in reconfigurability and multidimensional modulation ...
Yufei Wang +5 more
wiley +1 more source
Design and Analysis of the Dual-Band Far-Field Super-Resolution Metalens with Large Aperture
NanomaterialsThe resolving power of metalens telescopes rely on their aperture size. Flat telescopes are advancing with the research on super-resolution confocal metalenses with large aperture.
Cheng Guo +10 more
doaj +1 more source
Achromatic Metalens in the Visible and Metalens with Reverse Chromatic Dispersion
, 2017 In this letter, we experimentally report an achromatic metalens (AML) operating over a continuous bandwidth in the visible. This is accomplished via dispersion engineering of dielectric phase shifters: titanium dioxide nanopillars tiled on a dielectric spacer layer above a metallic mirror.
Khorasaninejad, M. +6 more
openaire +2 more sources
Broadband lightweight flat lenses for longwave-infrared imaging
, 2019 We experimentally demonstrate imaging in the longwave-infrared (LWIR) spectral band (8um to 12um) using a single polymer flat lens based upon multi-level diffractive optics.
Banerji, Sourangsu +5 more
core
Optimization for Si Nano-Pillar-Based Broadband Achromatic Metalens
IEEE Photonics JournalAn innovative optimization algorithm, named the hybrid particle swarm and genetic algorithm (PSO_GA), is proposed for designing broadband achromatic metalenses. A database is first constructed by scanning the parameters of the unit cell of the metalenses
Zhaohui Li, Yihao Lv
doaj +1 more source
Multispectral Chiral Imaging with a Metalens
Nano Letters, 2016 The vast majority of biologically active compounds, ranging from amino acids to essential nutrients such as glucose, possess intrinsic handedness. This in turn gives rise to chiral optical properties that provide a basis for detecting and quantifying enantio-specific concentrations of these molecules.
Khorasaninejad, M. +6 more
openaire +3 more sources
Detection of elliptical polarization parameters using a metalens
Компьютерная оптикаA metalens capable of detecting the polarization ellipticity of an incident beam is considered in this paper. This metalens consists of blocks with diffraction gratings of a 140-nm height and a 220-nm period.
A.G. Nalimov +4 more
doaj +1 more source