Results 101 to 110 of about 95,264 (327)
Moisture‐Driven Hydrogel Power Source with Asymmetric Ion Adsorption for Flexible Electronics
Advanced Functional Materials, EarlyView.A hydrogel‐based power source employing asymmetric ion‐adsorbing electrodes and moisture‐driven gradients is reported. This design enables continuous electricity generation for over 4000 minutes without significant decay and without requiring external input.
Zhaoyang Sun +9 more
wiley +1 more source
Secure Hop-by-Hop Aggregation of End-to-End Concealed Data in Wireless Sensor Networks
, 2008 In-network data aggregation is an essential technique in mission critical wireless sensor networks (WSNs) for achieving effective transmission and hence better power conservation. Common security protocols for aggregated WSNs are either hop-by-hop or end-
Aly, Salah A., Mlaih, Esam
core +1 more source
Joint Control of Radiated and Surface Waves via Space‐Time Coding Metasurfaces
Advanced Functional Materials, EarlyView.A unified space‐time coding metasurface platform enables simultaneous control of radiated and surface‐confined waves across multiple harmonics. Demonstrated functionalities include multi‐frequency beam shaping; surface‐wave excitation, and hybrid multiplexing.
Zihao Dai +6 more
wiley +1 more source
Security Property Validation of the Sensor Network Encryption Protocol (SNEP)
Computers, 2015 Since wireless sensor networks (WSNs) have been designed to be deployed in an unsecured, public environment, secured communication is really vital for their wide-spread use.
Salekul Islam
doaj +1 more source
, 2019 Traditional power grids are being transformed into Smart Grids (SGs) to address the issues in existing power system due to uni-directional information flow, energy wastage, growing energy demand, reliability and security.
Copeland, Rebecca +3 more
core +1 more source
Intrinsically Soft Printed Electronics for Digitally Augmented Human Sensing and Vision
Advanced Functional Materials, EarlyView.This work introduces a class of highly functional, multilayer flexible and stretchable circuits capable of digitally augmenting human sensing and vision. Studies in multi‐material soft composite inks yielded a formulation that enables overpass printing, self‐healing, and high‐resolution functionality.
Nathan Zavanelli +7 more
wiley +1 more source
A Grid-Based Linear Least Squares Self-Localization Algorithm in Wireless Sensor Network
International Journal of Distributed Sensor Networks, 2015 Self-localization is one of the key technologies in the wireless sensor networks (WSN). Some traditional self-localization algorithms can provide a reasonable positioning accuracy only in a uniform and dense network, while for a nonuniform network the ...
Wei Wang +6 more
doaj +1 more source
An Identity Based Key Management Scheme in Wireless Sensor Networks [PDF]
, 2011 Pairwise key establishment is one of the fundamental security services in sensor networks which enables sensor nodes in a sensor network to communicate securely with each other using cryptographic techniques.
Das, Ashok Kumar, Giri, Debasis
core
Photo‐Switching Thermal and Lithium‐Ion Conductivity in Azobenzene Polymers
Advanced Functional Materials, EarlyView.Light‐responsive azobenzene polymers control thermal and ionic transport simultaneously through structural transitions. UV illumination disrupts π–π stacking, converting crystalline trans states to amorphous cis configurations. Thermal conductivity drops from 0.45 to 0.15 W·m−1·K−1 while Li+ diffusivity increases 100 fold. This dual transport switching
Jaeuk Sung +7 more
wiley +1 more source
Advanced Healthcare Materials, EarlyView.A compact, wireless neural stimulator featuring a novel tapping inductor enables selective and independent stimulation of the motor cortex in rats via a single receiver coil. This minimally invasive system effectively reduces neuropathic pain through targeted cortical activation, offering a new avenue for bioelectronic pain therapies and advancing ...
Jeongju Moon +9 more
wiley +1 more source