Results 141 to 150 of about 33,091 (311)
Advanced Science, EarlyView.Silicon hot‐carrier photodetectors offer a CMOS‐compatible pathway for SWIR detection but suffer from intrinsically low quantum efficiency. Here, we introduce a quasi‐generalized antireflection coating (QARC) that universally enhances optical absorption and quantum efficiency, enabling the first CMOS‐compatible SWIR imaging with silicon hot‐carrier ...
Eui‐Hyoun Ryu +11 more
wiley +1 more source
Novel toroidal and superconducting metamaterials
, 2014 This thesis reports on new solutions for sensing and controlling the electromagnetic radiation, and explores some novel effects of electrodynamics, using metamaterials.I have demonstrated the first superconducting metamaterial-based electro-optical ...
Savinov, Vassili
core
Advanced Science, EarlyView.Designed and demonstrated a flexible metamaterial absorber via loss engineering for large‐area ultra‐broadband infrared extinction, providing a new method for miniaturization of absorbers and flexible optical devices. ABSTRACT The advancement of compact and wearable optical systems is critically limited by the lack of high‐performance, integrable ...
Zhe Wu +11 more
wiley +1 more source
Improvement of 5.8 GHz Band Patch Antenna with Metamaterial
Journal of Measurement Science and Instrumentation, 2010 A patch antenna,a metamaterial patch antenna and a proposed metamaterial patch antenna,are simulated and compared.Simulation results show that the proposed antenna can concentrate so well radiation energy into broadside direction that the antenna gain is
Nam-ki LEE, Seung-in YANG
doaj
Metamaterial NEMS: giant optical nonlinearity and magnetoelectric effect
We report NEMS-based reconfigurable photonic metamaterials controlled by electrical currents, magnetic fields and light. Our structures provide practically useful solutions for sub-megahertz and high contrast magnetoelectric modulation of metamaterial ...
Ou, J-Y. +4 more
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Engineering Hybrid Guided Modes in Subwavelength Uniaxial Metamaterial Waveguides
, 2017 We report anomalous dispersion properties of hybrid guided modes (HGMs) and their group velocity in a subwavelength uniaxial metamaterial waveguide with metal cladding.
Zhao, Huijun +2 more
core +1 more source
Tunable High‐Performance Metamaterial Filters Based on Novel SRR Architectures
Advanced Science, EarlyView.Based on two novel SRR configurations and two independent SRR integration approaches, four tunable bandpass metamaterial filters were fabricated with an ultra‐thin ceramic substrate. Among them, SM‐2 achieves over 97% electromagnetic wave transmittance, with a minimal 1.15% deviation in its resonant frequency prediction, making them promising ...
Lingxi Qu +4 more
wiley +1 more source
Advanced Science, EarlyView.Cuttlebone‐inspired architected metamaterials introduce controlled structural disorder to simultaneously enhance strength, energy absorption, and compressive stability. Tunable disorder suppresses shear anisotropy, outperforms periodic lattices, and establishes discrete randomness as a robust route to high‐performance lightweight mechanical ...
Zengqin Shi +7 more
wiley +1 more source
Multi‐Axis Stretchable Zippers for Personalized Wound Healing
Advanced Science, EarlyView.Multi‐axis stretchable zippers can adapt to complex wound morphologies and enable personalized wound treatment through programmable contraction. This morphological matching strategy helps accelerate wound closure, improve blood perfusion, promote epithelial regeneration, and enhance collagen remodeling, pioneering new directions for personalized and ...
Siyuan Cai +16 more
wiley +1 more source
Controller architectures for optimum performance in practical active acoustic metamaterials
, 2012 Over the last decade there has been significant interest in the design and production of acoustic metamaterials with physical qualities not seen in naturally occurring media.
Gao, Yan +3 more
core