Results 81 to 90 of about 223,728 (287)

Low-altitude Secure Communication Driven by Deep Reinforcement Learning: An Integrated Sensing and Communication Design

Leida xuebao
To address the physical layer security challenges in low-altitude Unmanned Aerial Vehicle (UAV) communications, this paper proposes an Integrated Sensing And Communication (ISAC) scheme.
Zhiqiang WEI, Jiashuo ZHANG, Fan LIU, Zai YANG, Zesong FEI   +4 more
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Boosting silica micro-rod Q factor to 8.28 × 109 for fully stabilizing a soliton microcomb

Nature Communications
Optical microcavities with strong light confinement are powerful tools for significantly enhancing light-matter interactions. Currently, the actual Q factor of a microcavity remains far below the theoretical limit, as specific factors affecting losses ...
Ting-Yang Pan, Teng Tan, Bing Duan, Bing Chang, Fan Tang, Yong-Jun Huang, Ying-Zhan Yan, Shan-Guo Huang, Da-Quan Yang, Bai-Cheng Yao   +9 more
doaj   +1 more source

Integrated Sensing and New Radio Communications for Air Vehicle Positioning

Vehicles
Aerial vehicles are increasingly relying on connectivity to cellular networks, with 5G new radio (NR) and 6G technologies deemed critical for the next generation of indoor and outdoor positioning systems.
Ibrahima Mbaye, Saba Al-Rubaye, Christopher Conrad, Gokhan Inalhan   +3 more
doaj   +1 more source

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

Advanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau, Christian N. Saggau, Stefan Baunack, Thomas Gemming, Yara Abdelaal, Robert Weser, Oliver G. Schmidt, Hagen Schmidt, Andreas Winkler, Mariana Medina‐Sánchez   +9 more
wiley   +1 more source

Joint Radar and Communications: Architectures, Use Cases, Aspects of Radio Access, Signal Processing, and Hardware

IEEE Access
Joint Radar and Communications (JRC) can satisfy the apparent demand for applications based on object detection, tracking, ranging, and positioning. JRC is, therefore, often seen as candidate technology for 6G mobile systems.
Victor Shatov, Benjamin Nuss, Steffen Schieler, Pradyumna Kumar Bishoyi, Lara Wimmer, Maximilian Lubke, Navid Keshtiarast, Christoph Fischer, Daniel Lindenschmitt, Benedikt Geiger, Reiner Thoma, Amina Fellan, Laurent Schmalen, Marina Petrova, Hans D. Schotten, Norman Franchi   +15 more
doaj   +1 more source

Light‐Induced Entropy for Secure Vision

Advanced Materials, EarlyView.
This work realized a ternary true random number generator by exploiting stochastic traps emerging within multiple junction interfaces, and quantitatively validated the generation of high‐quality random numbers. Furthermore, it successfully demonstrated diverse applications, including AI‐resilient image security, thereby providing a valuable guide for ...
Juhyung Seo, Seungme Kang, Chaehyun Kim, Taehyun Park, Youngwoo Yoo, Yeong Kwon Kim, Wonjun Shin, Byung Chul Jang, Young‐Joon Kim, Hocheon Yoo   +9 more
wiley   +1 more source

Distributed chemical sensor networks for environmental sensing [PDF]

, 2011
Society is increasingly accustomed to instant access to real-time information, due to the ubiquitous use of the internet and web-based access tools. Intelligent search engines enable huge data repositories to be searched, and highly relevant information ...
Cleary, John, Collins, Fiachra, Diamond, Dermot, Fay, Cormac, Maher, Damien, Orpen, Dylan   +5 more
core  

All‐Optical Reconfigurable Physical Unclonable Function for Sustainable Security

Advanced Materials, EarlyView.
An all‐optical reconfigurable physical unclonable function (PUF) is demonstrated using plasmonic coupling–induced sintering of optically trapped gold nanoparticles, where Brownian motion serves as a robust entropy source. The resulting optical PUF exhibits high encoding density, strong resistance to modeling attacks, and practical authentication ...
Jang‐Kyun Kwak, Changgyun Moon, Hyun‐Bin Yu, Sunkook Kim, Dong‐Hwan Kim   +4 more
wiley   +1 more source

A Code-Orthogonal PMCW Transmission Scheme for Improving Communications Performance in JCAS Systems

IEEE Access
Joint communications and sensing (JCAS) is regarded as a major technology building block in 6G networks. The combination of communications and radar sensing systems benefits from saved hardware costs, reduced energy consumption, and less spectrum ...
Yanpeng Su, Victor Shatov, Norman Franchi, Maximilian Lubke   +3 more
doaj   +1 more source