Results 151 to 160 of about 239,752 (297)
Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.Chalcogenide optical PCMs have gathered interest for their potential in compact, non‐volatile optics and photonics. Free‐space PCM metasurfaces require new considerations from phase change memory that need to be addressed for reliable scale‐up. Several failure mechanisms pertaining to free‐space PCM devices and layout methods are isolated to prevent ...
Cosmin Constantin Popescu +19 more
wiley +1 more source
Advanced Optical Materials, EarlyView.A simple optical programming technique is developed for fabricating plasmonic nanoantennas in a dual‐layer metasurface by crystallizing the plasmonic phase‐change material In3SbTe2 from the top and through the substrate with a subsequent reamorphization step.
Lukas Conrads +6 more
wiley +1 more source
High‐Efficiency Multi‐Level Beam Switching with Single‐Gate Tunable Metasurfaces Based on Graphene
Advanced Optical Materials, EarlyView.The growing demand for ultra‐fast telecommunications, autonomous driving, and futuristic technologies highlights the crucial role of active beam steering at the nanoscale. This work theoretically presents a multi‐level beam‐switching dielectric metasurface with a graphene layer for active tuning, addressing challenges associated with achieving high ...
Juho Park +3 more
wiley +1 more source
Optical Fiber Meta‐Tips Based on Partial‐Phase Control
Advanced Optical Materials, EarlyView.Optical fibers working as beam splitters or focusing lens are demonstrated, with the aid of a metasurface integrated on the fiber end facet. Metasurfaces based on meta‐atoms featuring partial control of the phase are considered unleashing their potential.
Maria Principe +5 more
wiley +1 more source
Advanced Optical Materials, EarlyView.An optimized fabrication approach for the nanostructuring of optical metasurfaces from van der Waals materials like hexagonal boron nitride is presented. The resonator geometries show enhanced geometric homogeneity, resulting in a significant increase in quality factors of symmetry‐protected bound states in the continuum resonances.
Jonas Biechteler +7 more
wiley +1 more source
Advanced Photonics Research, Volume 6, Issue 6, June 2025.Photonic resonances within a dielectric metasurface are investigated using photoelectron emission microscopy (PEEM) and finite‐difference time‐domain simulations. An electron inelastic mean free path of 35 ± 10 nm is extracted from comparisons between microscopy and simulations.
Andrew R. Kim +9 more
wiley +1 more source
Advanced Photonics Research, EarlyView.Optical wireless communications (OWCs) provide a promising alternative to spectrum‐congested microwave wireless communications. Recently, the use of metasurfaces with sub‐wavelength features for dynamic beam steering, beam manipulation, and spatial or optical‐angular‐momentum mode generation, conversion, and multiplexing in OWCs is proposed and ...
Ke Wang +7 more
wiley +1 more source
All‐Dielectric Metasurface‐Based Gap Waveguides
Advanced Photonics Research, EarlyView.Dielectric metasurface‐based waveguides (metawavegides) offer several advantages over conventional waveguides, making them ideal for integrated photonics. A design of a metawaveguide composed of a pair of dielectric metasurfaces is proposed, where each metasurface behaves as a wall of either a perfect electric conductor or a perfect magnetic conductor,
Vladimir R. Tuz +4 more
wiley +1 more source
Effect of simple vs. extended cholecystectomy on prognosis of T1b gallbladder cancer: a systematic review and meta-analysis. [PDF]
Front SurgGu H, Zhang G, Ma H, Yu Z.
europepmc +1 more source
Advanced Synthesis &Catalysis, Volume 367, Issue 5, March 4, 2025.Abstract Photochemical C−C coupling reactions can be tailored to industrial chemical processes and preparations of pharmaceuticals. Recent approaches in this area are limited to using precious transition metal coordination complexes that facilitate light absorption and redox processes with benchtop chemicals. Herein, we propose a paradigm that involves
Samjhana Maharjan +9 more
wiley +1 more source