Results 31 to 40 of about 230,956 (294)

Built‐In Interfacial Electric Field in Hydroxyl‐Terminated MXene/COF Heterostructures for Enhanced Solid‐State Supercapacitors

Advanced Functional Materials, EarlyView.
Hydroxyl‐terminated MXene is integrated with a redox‐active covalent organic framework through electrostatic self‐assembly followed by hydrothermal treatment to construct MXene/COF heterostructures with a built‐in interfacial electric field. Termination‐controlled interfacial electronic modulation induces charge redistribution and favorable band ...
Cheru Fekadu Molla, Birhanu Bayissa Gicha, Boka Fikadu Banti, Indra Memdi Khoris, Jaebeom Lee   +4 more
wiley   +1 more source

Design and Analysis of Ultra-Thin Broadband Transparent Absorber Based on ITO Film

Micromachines
In this paper, we design an ultra-thin broadband transparent absorber based on indium tin oxide (ITO) film, and we choose polymethyl methacrylate (PMMA) high-transmittance dielectric sheet instead of the traditional dielectric sheet and polyethylene ...
Zibin Weng, Yahong Li, Youqian Su, Zechen Li, Jingnan Guo, Ziming Lv, Chen Liang   +6 more
doaj   +1 more source

Using Classify-While-Scan (CWS) Technology to Enhance Unmanned Air Traffic Management (UTM)

Drones, 2022
Drone detection radar systems have been verified for supporting unmanned air traffic management (UTM). Here, we propose the concept of classify while scan (CWS) technology to improve the detection performance of drone detection radar systems and then to ...
Jiangkun Gong, Deren Li, Jun Yan, Huiping Hu, Deyong Kong   +4 more
doaj   +1 more source

High Speed Dim Air Target Detection Using Airborne Radar under Clutter and Jamming Effects [PDF]

, 2015
The challenging potential problems associated with using airborne radar in detection of high Speed Maneuvering Dim Target (HSMDT) are the highly noise, jamming and clutter effects.
Almslmany, A. E., Cao, Q. S., Wang, C. Y.   +2 more
core   +2 more sources

Smart Face Masks as Wearable Respiratory Sensors: A Review of Sensor Technologies, Materials, and Future Directions

Advanced Healthcare Materials, EarlyView.
This review highlights recent advances in smart face masks that actively monitor breathing. By integrating humidity, gas, temperature, pressure, strain, and triboelectric sensors, these masks track key respiratory parameters in real time. The article summarizes sensor mechanisms, compares performance across studies, and discusses challenges and future ...
Negin Faramarzi, Naseeh Backer Kannanthodi, Alice Nicole Casling, Babar Ali, Samira Lakouraj Mansouri, Alessandro Giuseppe D'aloia, Hossein Cheraghi Bidsorkhi, Maria Sabrina Sarto   +7 more
wiley   +1 more source

A TM₀₁-TE₁₁ Circular Waveguide Mode Converter on the Basis of Dielectric Filling

Micromachines
In this paper, a dielectric-filled circular waveguide TM01-TE11 mode converter is proposed, which has high conversion efficiency and a wide operating bandwidth.
Zibin Weng, Ziming Lv, Liupeng Zan, Sihan Xiao, Chen Liang   +4 more
doaj   +1 more source

Radar and RGB-depth sensors for fall detection: a review [PDF]

, 2017
This paper reviews recent works in the literature on the use of systems based on radar and RGB-Depth (RGB-D) sensors for fall detection, and discusses outstanding research challenges and trends related to this research field.
Cippitelli, Enea, Fioranelli, Francesco, Gambi, Ennio, Spinsante, Susanna   +3 more
core   +1 more source

Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain

Advanced Materials, EarlyView.
A radiofrequency antenna platform comprising planar and bend configurations is developed, incorporating structurally integrated epsilon‐negative metamaterial unit cells to enhance MRI. These antennas enable high‐resolution in vivo human MRI of the eye, orbit, and occipital brain. Comprehensive validation, including simulations, phantom experiments, SAR,
Nandita Saha, Bilguun Nurzed, Mostafa Berangi, Andre Kuehne, Helmar Waiczies, Igor Fabian Tellez Ceja, Xiang Hu, Thomas Gladytz, Lisa Krenz, Dave Huebler, Beate Endemann, Claudia Brockmann, Ebba Beller, Oliver Stachs, Thoralf Niendorf   +14 more
wiley   +1 more source

A Miniaturized Loaded Open-Boundary Quad-Ridge Horn with a Stable Phase Center for Interferometric Direction-Finding Systems

Micromachines
In order to achieve high accuracy in interferometric direction-finding systems, antennas with a stable phase center in the working bandwidth are required.
Zibin Weng, Chen Liang, Kaibin Xue, Ziming Lv, Xing Zhang   +4 more
doaj   +1 more source

Fusion Detection for Networked Radar Aided by Doppler Information

Leida xuebao, 2023
Compared with single-radar systems, spatially separated networked radar usually has better detection performance due to its advantages of spatial and frequency diversities.
Chang GAO, Fengdeng GU, Junkun YAN, Tianyi JIA, Hongwei LIU   +4 more
doaj   +1 more source