Results 51 to 60 of about 164,762 (248)
Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.This article presents a hybrid metal‐dielectric metasurface in transmission mode for mid‐infrared (MIR) spectroscopy. Composed of germanium on aluminium cylinders atop a calcium fluoride substrate, the metasurface achieves 80% transmission efficiency at λ = 2.6 µm with a narrow full‐width‐half‐maximum of 0.4 µm.
Amr Soliman +5 more
wiley +1 more source
A Dual‐Emissive DNA‐Templated Silver Nanocluster with Near‐Infrared I and II Emission
Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.This study presents a dual‐emissive DNA‐stabilized silver nanocluster with a nanosecond‐lived NIR‐I emission band and a microsecond‐lived NIR‐II emission band. Mass spectrometry establishes that the nanocluster has molecular formula (DNA)2[Ag17]11+. DNA sequence variations reveal critical nucleobases for stabilization, and modifications at the DNA 5 ...
Anna Gonzàlez‐Rosell +6 more
wiley +1 more source
Suppressed Stokes Shifts and Hot Luminescence from Quantum Dots within Plasmonic Nanocavities
Advanced Optical Materials, EarlyView.This study demonstrates the suppression of the Stokes shift in lead sulfide quantum dots through integration with plasmonic nanocavities. By enhancing spontaneous emission and altering exciton relaxation pathways, this approach enables direct band‐edge emission with improved radiative efficiency, highlighting the powerful role of nanophotonic ...
Junyang Huang +12 more
wiley +1 more source
Advanced Optical Materials, EarlyView.Curcuminoid boron difluoride dyes containing triphenylamine units are prepared and their photophysical and electrochemical properties are investigated. These new light‐emitting dyes are used in organic light‐emitting diodes (OLEDs) emitting at 800 nm with 1% external quantum efficiency, and show low threshold amplified spontaneous emission in thin ...
Anthony D'Aléo +11 more
wiley +1 more source
Photochromic Organic–Inorganic Material for Focusable Adaptive Lenses Fabrication
Advanced Photonics Research, EarlyView.This study investigates a zirconia‐based hybrid organic–inorganic material incorporating dithienylethene molecules for adaptive optics. It offers excellent photochromic properties, thermal stability, and adjustable thickness, enabling effective refractive index modulation.
Giorgia Franchin +6 more
wiley +1 more source
Advanced Photonics Research, EarlyView.This work introduces a low‐loss diffractive neural network, fabricated using an imprinting technique with parowax material, for recognizing and manipulating the topological charge of orbital angular momentum (OAM) waves. It is also demonstrated that the low‐loss diffractive network can perform mathematical operations based on the topological charges of
Wei Jia +4 more
wiley +1 more source
Design of Waveguide NbN‐Based Superconductor–Insulator–Superconductor Mixer for 650 GHz
Advanced Photonics Research, EarlyView.This research work focuses on a waveguide NbN‐based superconductor–insulator–superconductor mixer operating at 650 GHz. The signal coupling circuit is designed using a waveguide‐microstrip coupling structure, and the return loss obtained is lower than −16 dB. For the mixing circuit, its return loss is less than −7.5 dB, and the return loss reduces with
Lianhao He, Fangting Lin, Xiaoyong He
wiley +1 more source
Advanced Photonics Research, EarlyView.A compact self‐detecting dual‐comb spectroscopy (DCS) system based on dispersion‐engineered, high‐speed packaged quantum cascade lasers (QCLs) at λ≈4.6 μm under coherent injection locking is demonstrated. Broad multiheterodyne comb signal with reduced tooth linewidths by orders of magnitude is recorded.
Yu Ma +14 more
wiley +1 more source
Nature, 1970 Radio Emission of the Sun and Planets By V. V. Zheleznyakov. Translated By H. S. H. Massey. Edited By J. S. Hey. (International Series of Monographs in Natural Philosophy, Vol. 25.). Pp. xiv + 697. (Pergamon Press: Oxford, London and New York, February 1970.) 300s; $40.
openaire +2 more sources
Advanced Science, EarlyView.An unconventional magnetic order is observed in exfoliated CrBr3 layers, characterized by vertically correlated planar magnetic sub‐domains. Magnetic force microscopy, ab initio calculations, and micromagnetic simulations indicate that these sub‐domains arise from stacking faults modifying interlayer exchange coupling.
Sergey Y. Grebenchuk +9 more
wiley +1 more source