Results 51 to 60 of about 1,738,862 (302)

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Modular coherent photonic-aided payload receiver for communications satellites

Nature Communications, 2019
Satellite communications shall only thrive if being able to compete with fibre in both bandwidth and cost. Here, the authors demonstrate that a coherent and yet modular photonic-aided payload is feasible, paving the way for a new generation of ...
Vanessa C. Duarte, João G. Prata, Carlos F. Ribeiro, Rogério N. Nogueira, Georg Winzer, Lars Zimmermann, Rob Walker, Stephen Clements, Marta Filipowicz, Marek Napierała, Tomasz Nasiłowski, Jonathan Crabb, Marios Kechagias, Leontios Stampoulidis, Javad Anzalchi, Miguel V. Drummond   +15 more
doaj   +1 more source

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel, Shriram Ramanathan, Ronald P. Jenkins, Michael J. Carter   +3 more
wiley   +1 more source

Encryption in phase space for classical coherent optical communications

Scientific Reports, 2023
Optical layer attacks on optical fiber communication networks are one of the weakest reinforced areas of the network, allowing attackers to overcome security software or firewalls when proper safeguards are not put into place.
Adrian Chan, Mostafa Khalil, Kh Arif Shahriar, David V. Plant, Lawrence R. Chen, Randy Kuang   +5 more
doaj   +1 more source

Covert communications with a full-duplex receiver in non-coherent rayleigh fading [PDF]

, 2020
In a majority of research on covert communications, knowledge about channel state information (CSI) of main channel and/or warden channel is assumed to be known or partially known.
Zheng, Mengfan, Ling, Cong, Hamilton, Alexander   +2 more
core   +1 more source

Battery‐Inspired Electrochemical Synapses for Neuromorphic Applications

Advanced Science, EarlyView.
Battery‐ion‐inspired synaptic devices integrate diverse electrolyte systems (solid, ion‐gel, liquid) with transition metal oxides, two‐dimensional materials, and organic channels to regulate ion‐electron coupling. By tailoring ion transport and host interactions, these platforms enable controllable plasticity and energy‐efficient implementations for ...
Won Woo Lee, SeongCheol Jang, Wangmyung Choi, Jaewon Park, Jaehyun Hur, Hocheon Yoo, Hyun‐Suk Kim   +6 more
wiley   +1 more source

Machine Learning for Self-Coherent Detection Short-Reach Optical Communications

Photonics, 2023
Driven by emerging technologies such as the Internet of Things, 4K/8K video applications, virtual reality, and the metaverse, global internet protocol traffic has experienced an explosive growth in recent years.
Qi Wu, Zhaopeng Xu, Yixiao Zhu, Yikun Zhang, Honglin Ji, Yu Yang, Gang Qiao, Lulu Liu, Shangcheng Wang, Junpeng Liang, Jinlong Wei, Jiali Li, Zhixue He, Qunbi Zhuge, Weisheng Hu   +14 more
doaj   +1 more source

Drought Stress Mediated Changes in Food Crops: Mechanisms and Remediation Strategies

Advanced Science, EarlyView.
This work presents a multi‐scale framework for flavonoid‐mediated drought tolerance in staple food crops, integrating ROS redox regulation, antioxidant defense, rhizosphere microbial interactions, and sustainable agronomic practices. This interdisciplinary model provides core insights to develop climate‐resilient cropping systems and enhance global ...
Xiaoyi Duan, Litao Wang, Tuuli‐Marjaana Koski, Lizhe An, Thomas Efferth, Yujie Fu   +5 more
wiley   +1 more source

Ultrahigh-speed graphene-based optical coherent receiver

Nature Communications, 2021
Graphene-based photodetectors have many advantages for applications. Here, the authors demonstrate a high-speed optical coherent receiver for optical communications based on graphene-on-plasmonic slot waveguide photodetectors.
Yilun Wang, Xiang Li, Zhibin Jiang, Lei Tong, Wentao Deng, Xiaoyan Gao, Xinyu Huang, Hailong Zhou, Yu Yu, Lei Ye, Xi Xiao, Xinliang Zhang   +11 more
doaj   +1 more source

How to statistically model coherent MPI in optical communications? [PDF]

, 2018
The Beta distribution is used to model coherent MPI in optical communications and its fitness to describe experimental results is evaluated. It fits quite well to symmetric scenarios, but has some troubles when skewness matters.info:eu-repo/semantics ...
Pires, J. O., João O. Pires, Cancela, L. G., Luís G. Cancela   +3 more
core   +1 more source