Results 111 to 120 of about 853,308 (389)
A Silicon Photonic Integrated Frequency-Tunable Microwave Photonic Bandpass Filter [PDF]
, 2017 We report a fully integrated microwave photonic passband filter on a silicon photonic chip. The on-chip integrated microwave photonic filter (IMPF) consists of a high-speed phase modulator (PM), a thermally tunable high-Q micro-disk resonator (MDR), and a high-speed photodetector (PD). The bandpass filtering function of the IMPF is implemented based on
arxiv +1 more source
High performance photonic microwave filters based on a 50GHz optical soliton crystal Kerr micro-comb
, 2019 We demonstrate a photonic radio frequency (RF) transversal filter based on an integrated optical micro-comb source featuring a record low free spectral range of 49 GHz yielding 80 micro-comb lines across the C-band.
Chu, S. T. +8 more
core +1 more source
The Rise of Refractory Transition‐Metal Nitride Films for Advanced Electronics and Plasmonics
Advanced Materials Interfaces, EarlyView.Transition‐metal nitrides (TMNs) are exceptional materials with high stability, biocompatibility, and semiconductor integration, which have been extensively employed in various fields. However, the epitaxial growth of TMN films remains a challenge. The absence of high‐quality TMNs limits the understanding of their condensed matter physics and hinders ...
Jiachang Bi +3 more
wiley +1 more source
Gradient-Index-Based Frequency-Coded Retroreflective Lenses for mm-Wave Indoor Localization
IEEE Access, 2020 This article introduces retroreflective lenses for millimeter-wave radio-frequency indoor localization. A three-dimensional (3D) gradient-index Luneburg lens is employed to increase radar cross section (RCS) of photonic-crystal high-Q resonators and its ...
Petr Kadera +5 more
doaj +1 more source
Red Multi‐Resonant Thermally Activated Delayed Fluorescence Emitters as Bioimaging Agents
Advanced Optical Materials, EarlyView.Multi‐resonant thermally activated delayed fluorescence (MR‐TADF) emitters have attracted strong interest for use in electroluminescent devices due to their high photoluminescence quantum yield and narrowband emission. These properties, along with red emission, are also crucial for bioimaging probes.
Changfeng Si +4 more
wiley +1 more source
Engineering current collectors for advanced alkali metal anodes: A review and perspective
EcoMat, Volume 5, Issue 1, January 2023., 2023 Rational choice of current collectors plays a key role for successful operation of alkali metal batteries (AMBs). In this paper, fundamentals of alkali metal deposition on current collectors as well as recent advancements on designing functional metal and carbon‐based current collectors are reviewed.
Liang Hu +7 more
wiley +1 more source
Advanced Optical Materials, EarlyView.A versatile, high‐precision, non‐contaminating sugar‐transferring method is developed for nanofabrication on newly developed ultrathin and flexible diamond films. It enables the flexible all‐diamond metasurfaces, for the first time, come into the public eyes.
Yicheng Wang +10 more
wiley +1 more source
Photonics-Based High-Resolution 3D Inverse Synthetic Aperture Radar Imaging
IEEE Access, 2019 A photonics-based radar for high-resolution 3D microwave imaging is proposed and demonstrated, in which high range resolution is achieved by employing a wideband linearly frequency modulated signal, and high cross-range resolution in both azimuth and ...
Xingwei Ye +4 more
doaj +1 more source
Asymmetric Transmission and Diffraction Engineering in Ultrathin media via Coupled Metasurfaces
Advanced Optical Materials, EarlyView.Grating‐insulator‐grating coupled crosstalking metasurfaces hosted on a silicon nitride membrane platform for asymmetric control of the diffraction pattern and asymmetric transmission. It is shown that exploiting the interferences of higher diffraction orders between the two metasurfaces and engineering the resulting modes enables AT in such ...
Abbas Sheikh Ansari +3 more
wiley +1 more source
High Sensitivity Spin Defects in Carbon Implanted Diamond
Advanced Optical Materials, EarlyView.Self‐interstitial spin defects in diamond are fabricated in diamond by high energy carbon irradiation. Along with a systematic characterization of their properties, these spin defects demonstrate high sensitivities surpassing previous studies and coherent manipulation of spin states.
Xingni Chai +6 more
wiley +1 more source