Results 81 to 90 of about 32,592 (266)

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

Advanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis, Filip Aniés, Yiyang Yu, Mohammed Ghadiyali, Hendrik Faber, Zhanibek Bizak, Youssef Kabri, Pavlos Tzourmpakis, Suman Mandal, Linqu Luo, Temur Maksudov, Mohamad Insan Nugraha, Harold F. Mazo‐Mantilla, Patrice Vanelle, Julie Broggi, Khaled N. Salama, Udo Schwingenschlögl, Martin Heeney, Atif Shamim, Thomas D. Anthopoulos   +19 more
wiley   +1 more source

Secure Two-Party Distance Computation Protocols with a Semihonest Third Party and Randomization for Privacy Protection in Wireless Sensor Networks

International Journal of Distributed Sensor Networks, 2015
Scenarios in which two nodes who distrust each other in wireless sensor networks (WSNs) would like to know the distance between them are considered. The scenario is designed to protect the private information of WSNs, in this case each node's location ...
Haiping Huang, Tianhe Gong, Ping Chen, Guoxia Qiu, Ruchuan Wang   +4 more
doaj   +1 more source

Security in wireless sensor networks

Communications of the ACM, 2004
They are susceptible to a variety of attacks, including node capture, physical tampering, and denial of service, while prompting a range of fundamental research challenges.
Perrig, Adrian, Stankovic, John, Wagner, David   +2 more
openaire   +2 more sources

Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix

Advanced Materials, EarlyView.
3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández, Iason Konstantinos‐Douveas, Claas Abert, Elina Zhakina, Sandra Ruiz‐Gómez, Claudia Fernández‐González, Luke Alexander Turnbull, Sebastian Wintz, Markus König, Simone Finizio, Markus Weigand, Naëmi Leo, Dieter Suess, Aurelio Hierro‐Rodríguez, Amalio Fernández‐Pacheco, Claire Donnelly   +15 more
wiley   +1 more source

Network slicing based joint optimization of beamforming and resource selection scheme for energy efficient D2D networks

Intelligent and Converged Networks
The integration of network slicing into a Device-to-Device (D2D) network is a promising technological approach for efficiently accommodating Enhanced Mobile Broadband (eMBB) and Ultra Reliable Low Latency Communication (URLLC) services.
Biroju Papachary, Rajeev Arya, Bhasker Dappuri   +2 more
doaj   +1 more source

Novel Side Information Generation Algorithm of Multiview Distributed Video Coding for Multimedia Sensor Networks

International Journal of Distributed Sensor Networks, 2012
The traditional multiview distributed video coding scheme using regional unified coding may lead to distortion problem of decoding estimation of the intense motion region. This paper presents a novel multiview distributed video coding algorithm.
Fu Xiao, Jinkai Liu, Jian Guo, Linfeng Liu   +3 more
doaj   +1 more source

Classification of Human Motions Using Micro-Doppler Radar in the Environments with Micro-Motion Interference

Sensors, 2019
Human motion classification based on micro-Doppler effect has been widely used in various fields. However, the motion classification performance would be greatly degraded if the wireless environment has non-target micro-motion interference. In this case,
Xiaolin Ma, Running Zhao, Xinhua Liu, Hailan Kuang, Mohammed A. A. Al-qaness   +4 more
doaj   +1 more source

Underwater Wireless Sensor Networks

International Journal of Distributed Sensor Networks, 2014
1 School of Computer Science & Engineering, Kyungpook National University, Daegu, Republic of Korea 2Universidad Politecnica de Valencia, Camino de Vera, S/N, 46022 Valencia, Spain 3 South Dakota State University, DEH (Old ECS) 123, Brookings, SD 57007, USA 4Department of Informatics, Electronic and Sistemistic, University of Calabria, Italy 5 ...
Dongkyun Kim, Juan-Carlos Cano, Wei Wang 0015, Floriano De Rango, Kun Hua   +4 more
openaire   +2 more sources

Space‐Time Coding Conformal Metasurfaces for Multifrequency Beam Steering and Shaping

Advanced Materials, EarlyView.
Space‐time coding conformal metasurfaces enable dynamic wave control on curved surfaces by combining programmable spatial patterns with temporal modulation. This study shows that a single conformal aperture can independently manipulate multiple frequency components, achieving multifunctional beam shaping and steering, with implications for ...
Filippo Pepe, Lei Zhang, Yi Ning Zheng, Xiao Qing Chen, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Tie Jun Cui, Vincenzo Galdi   +8 more
wiley   +1 more source

Surface Coverage Algorithm in Directional Sensor Networks for Three-Dimensional Complex Terrains

Tsinghua Science and Technology, 2016
Coverage is an important issue in the area of wireless sensor networks, which reflects the monitoring quality of the sensor networks in scenes. Most sensor coverage research focuses on the ideal two-dimensional (2-D) plane and full three-dimensional (3-D)
Fu Xiao, Xiekun Yang, Meng Yang, Lijuan Sun, Ruchuan Wang, Panlong Yang   +5 more
doaj   +1 more source