Results 81 to 90 of about 5,866 (267)

A Low Profile Ultra-Wideband Antenna with Reconfigurable Notch Band Characteristics for Smart Electronic Systems. [PDF]

Micromachines (Basel), 2022
Zaidi A, Awan WA, Ghaffar A, Alzaidi MS, Alsharef M, Elkamchouchi DH, Ghoneim SSM, Alharbi TEA.   +7 more
europepmc   +1 more source

Unveiling α‐MoO3 as a High‐Index, Low‐Loss Anisotropic Material: Bridging the Gap From Mid‐Infrared to Ultraviolet Nanophotonics

Advanced Materials, EarlyView.
α‐MoO3 is established as a high‐index, low‐loss anisotropic platform bridging mid‐infrared polaritonics and ultraviolet‐visible nanophotonics. Spectroscopic ellipsometry and calculations reveal refractive indices exceeding 3.9, with the largest in‐plane birefringence among transparent layered crystals at 425–500 nm, enabling zero‐order UV waveplates ...
Adilet N. Toksumakov, Dmitriy V. Grudinin, Georgy A. Ermolaev, Alexey P. Tsapenko, Anton A. Minnekhanov, Konstantin V. Kravtsov, Nikolay V. Pak, Arslan B. Mazitov, Andrey A. Vyshnevyy, Aleksandr S. Slavich, Ivan A. Kruglov, Gleb I. Tselikov, Aleksey V. Arsenin, Kostya S. Novoselov, Valentyn S. Volkov   +14 more
wiley   +1 more source

Influence of Various Technologies on the Quality of Ultra-Wideband Antenna on a Polymeric Substrate. [PDF]

Polymers (Basel), 2022
Lukacs P, Pietrikova A, Vehec I, Provazek P.   +3 more
europepmc   +1 more source

Electrochromic Adaptive Solar Heater and Sub‐Ambient Passive Daytime Radiative Cooler

Advanced Materials, EarlyView.
An electrochromic Cu–Bi nanocluster device dynamically switches between solar heating and daytime sub‐ambient radiative cooling without mechanical motion. Defect‐activated graphene, minimized electrolyte loss, and pulse‐assisted reversible electrodeposition enable opposite solar and mid‐infrared modulation in one opaque platform, establishing a design ...
Chenxi Sui, Qizhang Li, Yu Han, Xinyu Dou, Gangbin Yan, Jiadong Liu, Blake Harris, Jinlei Li, Alexander S. Filatov, Qingsong Fan, Ching‐Tai Fu, Po‐Chun Hsu   +11 more
wiley   +1 more source

Design and Analysis of Super Wideband Antenna for Microwave Applications. [PDF]

Sensors (Basel), 2021
Balani W, Sarvagya M, Samasgikar A, Ali T, Kumar P.   +4 more
europepmc   +1 more source

Soft Skins With Reversible Thickness Morphing: Materials, Mechanisms, and Applications

Advanced Materials, EarlyView.
Evolution of electronic skin (e‐skin) technologies toward adaptive, multifunctional soft skins. Phase I highlights early rigid and discrete sensory interfaces. Phase II shows the transition toward flexible, stretchable, and large‐area e‐skin. Phase III captures the emergence of computational e‐skin.
Oliver Ozioko, Chiamaka Akah, Ravinder Dahiya   +2 more
wiley   +1 more source

Design of a Koch-Curved LPDA Antenna With Optimized Beamwidth to Improve the Aperture Efficiency of Reflector Antennas

IEEE Access
In this paper, we propose a Koch-curved log-periodic dipole array (LPDA) antenna with wideband characteristics and an optimal beamwidth as a reflector feed antenna for SIGINT satellites.
Jiyoung Park, Changhyeon Im, Hosung Choo
doaj   +1 more source

Wideband Circularly Polarized SIW Antenna Array That Uses Sequential Rotation Feeding

International Journal of Antennas and Propagation, 2014
A wideband right-handed circularly polarized (CP) substrate integrated waveguide- (SIW-) based diamond ring-slot antenna array at the X-band is presented in this study.
Fang-Fang Fan, Ze-Hong Yan, Wei Wang
doaj   +1 more source

CPW-Fed Flexible Ultra-Wideband Antenna for IoT Applications. [PDF]

Micromachines (Basel), 2021
Kirtania SG, Younes BA, Hossain AR, Karacolak T, Sekhar PK.   +4 more
europepmc   +1 more source

Ti3C2Tx MXene/Silver Composite Foams For Lightweight, High‐Performance Electromagnetic Interference Shielding and Joule Heating

Advanced Materials Interfaces, EarlyView.
Ultrathin MXene/EMF composite foams achieve a specific shielding efficiency of 749.6 dB.dB·cm3$\mathrm{dB}\cdot {\mathrm{cm}}^{3}$/g, while the silver‐enhanced MXene/Ag/EMF reaches 81.4 dB shielding effectiveness at just 1.0 mm thickness. Both composites exhibit rapid Joule heating, retain stability up to 250∘C$^\circ{\rm C}$, and withstand 1000 ...
Abdullah A. Mahmood, Mingxuan Li, Vahid Rad, Mehdi Zarei, Chen‐Yu Yeh, Masoud Soroush, Guangyong Li, Paul W. Leu   +7 more
wiley   +1 more source