Results 71 to 80 of about 8,940 (185)

Transmit Power-Efficient Beamforming Design for Integrated Sensing and Backscatter Communication

IEEE Open Journal of the Communications Society
Ambient Internet of Things networks use low-cost, low-power backscatter tags in various applications, and sensing is necessary to introduce perceptive intelligence to the network.
Shayan Zargari, Diluka Galappaththige, Chintha Tellambura   +2 more
doaj   +1 more source

Optical Coherence Tomography for High‐Precision Industrial Inspection in Industry 4.0: Advances, Challenges, and Future Trends

Laser &Photonics Reviews, Volume 20, Issue 8, 17 April 2026.
This review examines how optical coherence tomography transforms industrial inspection by delivering real‐time, micrometer‐resolution, depth‐resolved imaging. It surveys applications across display manufacturing, thin films, microelectronics, laser processing, and coatings, evaluates performance against conventional techniques, and highlights emerging ...
Nipun Shantha Kahatapitiya, Sm Abu Saleah, Daewoon Seong, Naresh Kumar Ravichandran, Sangyeob Han, Ruchire Eranga Wijesinghe, Mansik Jeon, Jeehyun Kim   +7 more
wiley   +1 more source

Manipulating Terminal Bonds of Ti3C2Tx MXene for Highly Efficient Microwave Absorption and Photothermal Conversion

Rare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT MXenes have been widely investigated as microwave absorption (MA) materials because of their unique properties. This study introduces a terminal bond manipulation strategy to enhance charge transfer and polarization in Ti3C2Tx, optimizing its MA performance.
Xiang Fang, Yuqian Huang, Yibing Lin, Jing Ma, Kaihuan Yu, Bo Zhong, Yuanlie Yu, Ning Li, Li Qiang   +8 more
wiley   +1 more source

Modeling Large Dust Aerosols in the Community Earth System Model Version 2 (CESM2)

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 4, April 2026.
Abstract Dust aerosols have a wide size distribution from less than 0.1 to over 100 μm and dominate Earth's atmospheric aerosol mass. However, most Earth system models (ESMs) inadequately represent dust aerosols larger than 10 μm in diameter, limiting the accuracy of the simulated dust cycle and climate impacts.
Longlei Li, Natalie M. Mahowald, Xiaohong Liu, María Gonçalves Ageitos, Ziming Ke, Danny M. Leung, Carlos Pérez García‐Pando, Ron L. Miller, Vincenzo Obiso, Paul Ginoux, Jasper F. Kok, Paola Formenti, Claudia Di Biagio, Philip G. Brodrick, David R. Thompson, Roger N. Clark, Gregory S. Okin, Robert O. Green, Bo Zhou, Samuel Albani, Adeyemi A. Adebiyi   +20 more
wiley   +1 more source

Sum rate maximization in active RIS-assisted ambient backscatter communication system

Results in Engineering
This paper focuses on an active reconfigurable intelligent surface (RIS)-assisted ambient backscatter communication (AmBC) system. The explosive growth of the Internet of Things (IoT) has led to increasing demands for efficient communication, yet ...
Hongxia Zheng, Xingquan Li, Chunlong He, Chiya Zhang, Yong Wang, Guoqing Wang, Zhipeng Xiao, Jin Chen   +7 more
doaj   +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

Polarization-Based Reconfigurable Tags for Robust Ambient Backscatter Communications

IEEE Open Journal of the Communications Society, 2020
Ambient backscatter communication is an emerging and promising low-energy technology for the Internet of Things. In such a system, a tag sends a binary message to a reader by backscattering a radio frequency signal generated by an ambient source. The tag
R. Fara, D.-T. Phan-Huy, A. Ourir, Y. Kokar, J.-C. Prevotet, M. Helard, M. Di Renzo, J. De Rosny   +7 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

Ambient Backscatter-assisted Relaying in Symbiotic Radio Networks with Energy Harvesting: Performance Analysis

Jordanian Journal of Computers and Information Technology
The proliferation of Internet of Things (IoT) devices in the transition towards 6G networks demands ultra-energy-efficient communication solutions capable of supporting massive connectivity. Ambient Backscatter Communication (AmBC) integrated with Energy
Lam Dong Huynh, Lam Thanh Tu, Quang Sang Nguyen, Tan N. Nguyen   +3 more
doaj   +1 more source

Backscatter-NOMA: A Symbiotic System of Cellular and Internet-of-Things Networks

IEEE Access, 2019
Non-orthogonal multiple access (NOMA) is envisioned as a key technology to enhance the spectrum efficiency for 5G cellular networks. Meanwhile, ambient backscatter communication is a promising solution to the Internet of Things (IoT), due to its high ...
Qianqian Zhang, Lin Zhang, Ying-Chang Liang, Pooi-Yuen Kam   +3 more
doaj   +1 more source