Results 91 to 100 of about 1,025 (236)
Advanced Optical Materials, EarlyView.Nearly hyperuniform disordered photonic slabs guide light along prescribed freeform pathways without relying on lattice symmetry. A pathway‐first design embeds curved channels within a photonic bandgap hyperuniform network, maintaining high transmission through freeform bends.
Timothy Amoah +8 more
wiley +1 more source
Remote sensing for the detection of explosives and energetic materials by N-14 NQR and N-14 NMR
, 2019 PhotonIcs and Electromagnetics Research Symposium - Spring (PIERS-Spring) -- JUN 17-20, 2019 -- Rome, ITALYIn this work, technical approaches for remote detection of explosives and energetic materials by N-14 NQR and NMR are presented.
Rameev, Bulat +4 more
core +1 more source
Topological THz on-chip valley–spin converter
JPhys PhotonicsTopological photonics offers a powerful platform for next-generation nanophotonic chips, capitalizing on their remarkable resilience to disorder and defects. Among the two-dimensional (2D) photonic topological insulators, valley-Hall (VH) and pseudo-spin-
Yudong Ren +9 more
doaj +1 more source
Wavelength‐Multiplexed 2D Beam Steering via a Passive Diffractive Network
Advanced Optical Materials, EarlyView.Illustration of a wavelength‐multiplexed diffractive beam steering system, which is composed of K cascaded diffractive layers, each containing phase‐modulating elements that are jointly optimized using deep learning–based optimization. When illuminated with a set of wavelengths {λ1,λ2,…,λNw}$\{ {{{\lambda }_1},{{\lambda }_2},\ldots ,{{\lambda }_{{{N}_w}
Che‐Yung Shen +5 more
wiley +1 more source
Extrinsic Limitations of Stealthy Hyperuniform Devices
Advanced Optical Materials, EarlyView.Stealthy hyperuniform devices exhibit a scattering‐free angular region whose extent follows a simple quenching equation. Experimental measurements confirm this prediction but reveal quenching efficiencies far below theoretical expectations. Multiple scattering and finite‐size effects are quantified, establishing realistic performance limits for ...
Yuhao Xu +5 more
wiley +1 more source
Active Control of Bound States in the Continuum in Toroidal Metasurfaces
Advanced Photonics ResearchThe remarkable properties of toroidal metasurfaces, featuring ultrahigh‐Q bound states in the continuum (BIC) resonances and nonradiating anapole modes, have garnered significant attention.
Fedor V. Kovalev +4 more
doaj +1 more source
Advanced Optical Materials, EarlyView.A Te2Se/Si heterojunction designed through atomistic simulations reduces oxide‐related traps, dark current, and noise compared with pure tellurium devices. This CMOS‐compatible platform enables short‐wave infrared detection and high‐contrast imaging in a 14 × 14 array, highlighting a scalable strategy for robust, low‐noise SWIR photodetectors and image
Byeongjin Park +13 more
wiley +1 more source
Electrical tuning of branched flow of light
Nature CommunicationsBranched flows occur ubiquitously in various wave systems, when the propagating waves encounter weak correlated scattering potentials. Here we report the experimental realization of electrical tuning of the branched flow of light using a nematic liquid ...
Shan-shan Chang +15 more
doaj +1 more source
Advanced Optical Materials, EarlyView.Here we use a template‐assisted self‐assembly approach of metal colloids onto metal films to produce hybrid plasmonic metasurfaces that integrate nanoparticle‐on‐mirror cavities with periodic metal colloid arrays. The resulting coupling between gap plasmons and grating‐coupled surface plasmon polaritons enables programmable hybrid modes with tailored ...
Afroditi Koutsogianni +6 more
wiley +1 more source
Optically controlled microfluidics [PDF]
, 2007 Three projects are described in this thesis that combine microfabrication techniques with optical micromanipulation. The aim of these projects is to use expertise in microlithography and optical tweezing to create new tools for Lab-on-Chip devices.
Neale, Steven Leonard
core +2 more sources