Results 271 to 280 of about 185,664 (327)
Exploring Double NDR Modulation and UV‐NIR Photodetection in MoS2/Sb2Se3 Heterostructures
Advanced Optical Materials, EarlyView.In this study, a van der Waals Sb2Se3/MoS2 heterostructure exhibits dual negative differential resistance (NDR) peaks at room temperature. The first originates from band‐to‐band tunneling, while the second, triggered under laser illumination, is attributed to trap states and recombination dynamics.
Muhammad Suleman +8 more
wiley +1 more source
Advanced Optical Materials, EarlyView.This review explores how engineered porous materials enhance surface‐enhanced Raman scatering (SERS) spectroscopy by synergizing analyte enrichment and electromagnetic field amplification. It is systematically evaluated four classes, nanoporous metals, plasmonic polymers, mesoporous silica, and metal‐organic frameworks (MOFs), highlighting their unique
Miguel A. Correa‐Duarte +2 more
wiley +1 more source
Intracellular Monitoring of Luminescent Ag2S Nanoparticles in Fibroblasts
Advanced Optical Materials, EarlyView.This study investigates the long‐term luminescence behavior of Ag2S quantum dots (AS QDs) with three surface ligands (DTDTPA, 11MUA, PEG) in fibroblasts over 9 days. AS‐PEG showed stable uptake and enhanced NIR‐II emission, while others decreased due to oxidative stress.
Mahshid Hashemkhani +6 more
wiley +1 more source
Adaptive polarization-difference imaging algorithms for through-the-wall microwave imaging scenarios
, 2005 K. M. Yemelyanov +3 more
openalex +2 more sources
Advanced Optical Materials, EarlyView.We demonstrate single‐layer titanium dioxide Janus metasurface holograms that achieve directionally asymmetric imaging under forward and backward illumination. By integrating the Dammann grating principle with precise phase control, our design produces high‐fidelity holographic images for arbitrary polarization states at 532 nm, simplifying fabrication,
Yu‐Chuan Chang +6 more
wiley +1 more source
SPATIO-SPECTRAL MAXIMUM ENTROPY METHOD: II. SOLAR MICROWAVE IMAGING SPECTROSCOPY
, 2005 Su‐Chan Bong +4 more
openalex +2 more sources
On‐Chip Sensing with Slow Light Topological Cavities
Advanced Optical Materials, EarlyView.A valley photonic crystal slow‐light sensor is demonstrated with up to 1.76‐fold shorter round‐trip path lengths than non‐slow‐light designs. The stronger light‐matter interactions in the slow‐light cavity sensor result in up to threefold higher sensitivity compared to the non‐slow‐light cavity sensor.
Bodhan Chakraborty +4 more
wiley +1 more source
Smart Theremin Based on Electromagnetic Metasurfaces for Fine Dual‐Hand Perception
Advanced Optical Materials, EarlyView.The proposed Meta‐Theremin leverages a frequency‐spatial multiplexing metasurface to enable robust dual‐hand perception by shielding environmental noise and confining EM fields to interaction zones. Its physics‐informed neural network decouples hand‐specific echoes, enhancing accuracy.
Che Liu +8 more
wiley +1 more source