Results 101 to 110 of about 22,742 (201)

Modeling and Performance Analysis of Large-Scale Backscatter Communication Networks with Directional Antennas. [PDF]

Sensors (Basel), 2022
Wang Q, Zhou Y.
europepmc   +1 more source

First LiDAR Observation of Quasi‐Periodic Structures in Mid‐Latitude E‐Region Meteoric Ca+ Layers

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract We report the first LiDAR observations of continuous quasi‐periodic (QP) metal density structures in mid‐latitude E‐region meteoric Ca+ layers using an all‐solid‐state LiDAR system in Beijing (40.4°N, 116.0°E). These QP Ca+ structures, with periods of 2–30 min and vertical wavelengths of ∼2–15 km, were primarily observed above 100 km.
Jixin Guo, Tao Yu, Lifang Du, Jin Wang, Xiangxiang Yan, Yan Yu, Wenyu Hao, Yifan Qi, Haoran Zheng, Guotao Yang   +9 more
wiley   +1 more source

Adaptive encoding scheme providing optimal performance for Internet of Things industry in the backscatter system

International Journal of Distributed Sensor Networks, 2017
In the wireless communication market, Internet of Things is one of the major issues. Internet of Things is a technology which connects all objects to the Internet and enables to share the information of the objects with each other.
Jae-Hyun Ro, Bit-Na Kwon, Seongjoo Lee, Hyoung-Kyu Song   +3 more
doaj   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, Volume 36, Issue 20, 9 March 2026.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Backscatter communication assisted vehicular positioning technology with ultra-high accuracy

Dianxin kexue, 2020
The accurate vehicular positioning technology has been the fundamentalfunction for safer auto-driving and vehicular-to-everything networks.One research trend focuses on enabling the low-cost,reliable,and accurate vehicular positioning in high-density ...
Kaifeng HAN, Tiezhi LIU
doaj  

Photo‐Reconfigurable Supercoupling Induced Transparency in On‐Chip Topological Edge State Cavities

Advanced Materials, Volume 38, Issue 13, 3 March 2026.
A novel supercoupling induced transparency (SIT) is demonstrated in a valley‐Hall photonic crystal. The valley vortices enable the supercoupling between a leaky and a guided topological edge state cavity even across a distance of 4.3 wavelengths, inducing a transparency window with negligible reflection.
Wenhao Wang, Ranjan Singh
wiley   +1 more source

Performance analysis of multi-UAV-assisted backscatter communication system

EURASIP Journal on Advances in Signal Processing
The Internet of Things (IoT) technology has broad application prospects, but for the large-scale decentralized deployment of IoT devices, energy supply and data collection are the two challenges faced by IoT applications.
Dao Zhang, Quanyong Fu, Weinong Wu, Taotao Zhong   +3 more
doaj   +1 more source

Multi-Antenna Broadband Backscatter Communications

Backscatter communication offers a promising solution to connect massive Internet-of-Things (IoT) devices with low cost and high energy efficiency. Nevertheless, its inherently passive nature limits transmission reliability, thereby hindering improvements in communication range and data rate.
Chen, Hao, Huang, Zhizhi, Liang, Ying-Chang, Schober, Robert   +3 more
openaire   +2 more sources

Ultrasound in Women's Health: Mechanisms, Applications, and Emerging Opportunities

Advanced Materials, Volume 38, Issue 14, 6 March 2026.
As healthcare moves toward decentralization, ultrasound technologies are evolving from strictly imaging tools in clinical settings into versatile diagnostic and therapeutic platforms, with growing roles addressing women's health needs. This review highlights how ultrasound's underlying physical mechanisms can be harnessed to reduce disparities in women'
Sarah B. Ornellas, Bilal Kizilaslan, Aastha Shah, Jason F. Hou, Yoonsoo Shin, Alejandra Hernandez Moyers, Claudia Lozano, Canan Dagdeviren   +7 more
wiley   +1 more source

Laser Micromachining of Liquid Metal Patterns for Stretchable Electronic Circuits

Advanced Materials Technologies, Volume 11, Issue 6, 18 March 2026.
A cleanroom‐free fabrication strategy combines UV‐laser micromachining with a copper foil wetting layer to rapidly produce high resolution, liquid metal based stretchable electronic circuits on diverse substrates. The scalable, maskless process enables complex circuit designs (<$<$3 h, ∼$\sim$15/device) with excellent electrical stability under strain,
Merjen Palvanova, Patrick McManigal, Grace Fredrickson, Eric J. Markvicka   +3 more
wiley   +1 more source