Results 61 to 70 of about 66,882 (274)
Sensors, 2021 Wireless charging provides continuous energy for wireless sensor networks. However, it is difficult to replenish enough energy for all sensor nodes with fixed charging alone, and even more unrealistic to charge a large number of nodes within a short time
Huaiyu Qin +3 more
doaj +1 more source
Energy-Throughput Tradeoff in Sustainable Cloud-RAN with Energy Harvesting
, 2017 In this paper, we investigate joint beamforming for energy-throughput tradeoff in a sustainable cloud radio access network system, where multiple base stations (BSs) powered by independent renewable energy sources will collaboratively transmit wireless ...
Cai, Lin X. +3 more
core +1 more source
Supercapacitor leakage in energy-harvesting sensor nodes: fact or fiction? [PDF]
, 2012 As interest in energy-harvesting sensor nodes continues to grow, the use of supercapacitors as energy stores or buffers is gaining popularity. The reasons for their use are numerous, and include their high power density, simple interfacing requirements ...
Merrett, Geoff V., Weddell, Alex S.
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
Research on Wireless Charging Device EMC Testing
Dianxin kexue, 2014 The current technical approaches of wireless charging devices and international existing wireless charging standard were analyzed. Then, the electromagnetic compatibility for wireless charging case management in Europe, America, Korea and Japan was ...
Ruichen Xu +5 more
doaj +2 more sources
Wireless Inductive Charging for Low Power Devices [PDF]
, 2017 Currently wireless charging for most consumer electronics is still evolving in the mainstream market. This technology has taken a slow adoption. I n a world faced with variety of handheld devices demand for a shorter charging time is constantly being ...
Macharia, John
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
A data collection method based on extended wireless charging Qi standard
Dianzi Jishu Yingyong, 2018 Wireless charging has the advantages of safe charging and high efficiency. It has been applied to wireless data acquisition systems to solve the problem of power energy life and prolong the working life of the system.
Bai Guanglei +4 more
doaj +1 more source
Beamforming for Magnetic Induction based Wireless Power Transfer Systems with Multiple Receivers
, 2015 Magnetic induction (MI) based communication and power transfer systems have gained an increased attention in the recent years. Typical applications for these systems lie in the area of wireless charging, near-field communication, and wireless sensor ...
Akyildiz, I. F. +2 more
core +1 more source
Alkali Ion‐Incorporated HfO2 Dielectrics for Reconfigurable Neuromorphic Computing
Advanced Functional Materials, EarlyView.This work presents an indium gallium zinc oxide (IGZO) transistor with an alkali cation‐integrated hafnium dioxide (HfO2) dielectric exhibiting synaptic behavior via ion retention. The solution‐based film fabrication strategy overcomes the limitations of atomic layer deposition (ALD) and precursor coating, enabling the control of synaptic retention ...
Seung Yeon Ki +7 more
wiley +1 more source