Results 101 to 110 of about 5,866 (267)

Lead‐Free Chiral Hybrid Metal Halides for Circularly Polarized Light‐Emitting Diodes

Advanced Optical Materials, EarlyView.
Lead‐free chiral hybrid metal halides provide a versatile platform for realizing chiroptical responses through chiral modulation of metal–halide frameworks with diverse dimensionalities, induces inversion‐symmetry breaking and enables dissymmetric excited‐state transitions toward efficient circularly polarized luminescence and electroluminescence. This
Kun Zhu, Li Wan
wiley   +1 more source

Bio-inspired wideband antenna for wireless applications based on perturbation technique. [PDF]

Heliyon, 2020
Abolade JO, Konditi DBO, Dharmadhikary VM.   +2 more
europepmc   +1 more source

Digital Twin of a One‐Sun‐Driven Luminescent‐Concentrator‐Assisted Planar Solar‐Pumped Fiber Laser

Advanced Optical Materials, EarlyView.
An experimentally‐validated digital twin of a one‐sun solar‐pumped fiber laser enables a design exhibit 13‐times higher output power at 1064 nm to be achieved. Despite its simple appearance, the multitude of choices in the design parameters make finding this improved very tedious in the lab, thus the digital twin can save significant time and effort ...
Anvarjon Sherniyozov, Dmitry Busko, Bryce S. Richards   +2 more
wiley   +1 more source

Novel design and fabrication of a mechanically tunable multiband watch antenna for wireless applications

Scientific Reports
Novel design of a tunable watch antenna for both wideband wireless applications is presented in this paper. Arrows in the watch radiating patch are designed to control the bandwidth; also, a ground structure is designed beneath the radiating patch to ...
Ashraf S. Abdel Halim, Omnia Hamdy
doaj   +1 more source

Robust Wideband Interference Suppression Method for GNSS Array Antenna Receiver via Hybrid Beamforming Technique

Remote Sensing
Global navigation satellite system (GNSS) array antenna receivers are widely used to suppress wideband interference in navigation countermeasures. However, existing array antenna receivers all adopt a digital array structure and digital beamforming ...
Zhenxing Xu, Qijia Dong, Shenyang Li, Fuzhan Yue, Meng Wang, Zhenghuan Xia, Xiao Chen, Shuangna Zhang, Guoji Zou, Huizheng Wang   +9 more
doaj   +1 more source

Full‐Stokes Polarimetry Metasurface‐Enabled Single‐Shot Measurement of the Spin Hall Effect of Light

Advanced Optical Materials, EarlyView.
This study presents a metasurface‐enabled approach to measure the spin Hall effect of light in a single‐shot. The metasurface splits a reflected light into six polarization‐dependent focal spots, allowing all Stokes parameters to be obtained from single image.
Jeonghoon Choi, Jaekyung Kim, Sujeong Park, Doyoon Lee, Juhoon Baek, Junsuk Rho, Minkyung Kim   +6 more
wiley   +1 more source

Omnidirectional Ultra‐Broadband Cu/TiO2 Metasurface Absorbers for High‐Efficiency Solar Thermal Conversion and Photothermal Plasmon‐Driven Catalysis

Advanced Optical Materials, EarlyView.
Metasurface shows selective solar–thermal energy conversion with high‐activity solar/laser‐driven chemistry. The breakthrough is co‐designing broadband FP‐cavity + plasmonic LSPR/SLR resonances in an ultra‐thin metamaterial so that it not only harvests the most efficient proportion of solar radiation but also suppresses mid and IR emissivity. Moreover,
Samira Mehrabi, HaoYu Zhang, Narendra Chaulagain, Edgar Acosta, Nazir P. Kherani   +4 more
wiley   +1 more source

Dual-sense circularly polarized array antenna for GPS L1/L2 bands and L-band satellite receivers

Scientific Reports
A wideband, dual-sense circularly polarized (CP) crossed-dipole array antenna for L-band satellite receivers and GPS L1/L2 bands is presented in this study, addressing conventional designs’ limitations.
Ahmed Azeez Khudhair, Javad Nourinia, Changiz Ghobadi, Majid Shokri   +3 more
doaj   +1 more source

Two‐Dimensional Isotropic Spatial Differentiation Through Complete Polarization Control

Advanced Optical Materials, EarlyView.
This work enables two‐dimensional isotropic spatial differentiation at planar interfaces over a wide range of incident angles by extending the output polarization from linear to elliptical. The choice of incident angle can be used to balance broader spectral response at low angles and higher edge‐detection efficiency at larger angles.
Doyoon Lee, Minkyung Kim
wiley   +1 more source

Research on the Ultra-wideband Internal Antenna for Train Equipment

机车电传动, 2018
Base on the theory that tightly coupling can extend the bandwidth of the antenna, the rule in variations of antenna impedance in the strong coupled environment was used to study the influence of patch and metal ground on the impedance of the designed ...
TANG Jun, PAN Wenbo
doaj