Results 121 to 130 of about 58,777 (280)

Passive massive MIMO hybrid RF-perovskite energy harvesting frontend for LEO satellite applications

Discover Electronics
Low-Earth orbit (LEO) satellites encounter significant energy challenges during eclipse periods and low solar illumination, limiting mission autonomy, operational lifespan, and functionality.
Fanuel Elias, Sunday Ekpo, Mfonobong Uko, Stephen Alabi, Sunday Enahoro, Muhammad Ijaz, Helen Ji, Rahul Unnikrishnan, Nurudeen Olasunkanmi   +8 more
doaj   +1 more source

Backward Energy Transmission in Resonant RF Energy Harvesters

Micromachines
RF Energy Harvesting (RFEH) circuits have been extensively researched in recent years. Researchers have proposed dozens of RFEH models with various architectures and topologies. Due to the small amount of energy available to be harvested, RFEH circuits must be as efficient as possible, both in terms of receiving energy and its further processing ...
Jakub Szut, Mariusz Pauluk, Paweł Piątek   +2 more
openaire   +2 more sources

Smartly Assembled near‐Micron RF‐Responsive Agents Bridge Transarterial Embolization and Immunothermal Potentiation

Advanced Science, EarlyView.
ABSTRACT Hepatocellular carcinoma (HCC) remains a significant clinical challenge due to the limited efficacy of conventional treatments like surgery, radiofrequency ablation (RFA), and transarterial embolization (TAE). Here, we develop an innovative TAE and immunothermal therapy strategy based on smartly assembled near‐micron layered double hydroxide ...
Qitao Hu, Junkang Ding, Lingxiao Zhang, Zhou Tian, Cheng Zeng, Shaomin Zou, Wenjing Zhang, Tangye Zeng, Zhencang Gao, Zhouyi Sun, Gang Liu, Weiyu Chen, Zhe Tang   +12 more
wiley   +1 more source

Reconfigurable Spoof Plasmonic Skyrmion Electronics for Deformation‐Invariant Multimode Sensing

Advanced Science, EarlyView.
A flexible multimode sensor based on capacitively loaded spoof plasmonic skyrmions enables deformation‐invariant dielectric sensing with ultra‐compact size and high Q‐factor. Near‐equidistant resonances remain stable under shape change and bending, while capacitor loading improves bending robustness and multimode sensitivity, highlighting strong ...
Zengxiang Wang, Xiangzheng Kong, Xiaojun Huang, Ying Tian, Wang Yao, Xia Xiao, Zhuo Li, Yu Luo   +7 more
wiley   +1 more source

Radio Frequency Energy Harvesting for Underground Sensor Nodes: Possibilities and Challenges

IEEE Access
Radio frequency energy harvesting (RFEH) is considered as one of the possible and environmentally friendly solution for energizing sensor devices and prolonging the lifetime of wireless sensor networks (WSNs).
Emmanuel Mahenge, Ramadhani Sinde, Mussa Ally Dida, Anael Elikana Sam   +3 more
doaj   +1 more source

Field‐Driven Activation of Solid‐State Devices in Open Circuits for Energy Harvesting and Wireless Sensing

Advanced Science, EarlyView.
Time‐varying electric fields can activate solid‐state devices such as LEDs and capacitors for energy harvesting and powering in open circuits. The response of solid‐state devices to time‐varying electric fields caused by vibrations can be utilised for smart sensing of human motions and object vibrations.
Renyun Zhang, Magnus Hummelgård, Henrik Andersson, Nicklas Blomquist, Jonas Örtegren, Hans‐Erik Nilsson, Zhong Lin Wang   +6 more
wiley   +1 more source

Wireless, Adaptable and Fully Implantable Battery‐powered Devices for Optical Stimulation of the Spinal Cord in Small Rodents

Advanced Science, EarlyView.
Current technologies for spinal cord optogenetic stimulation rely on external power sources and face reliability constraints in freely behaving animals. Here, a fully implantable, battery‐powered optoelectronic device is introduced, enabling operation in any selected environment with wireless recharging for months‐long stimulation.
Shahriar Shalileh, Adan Moallemi, Elham Mohseni Vadeghani, Samuel Tretjakov, Brianna Tsuyuki, Alexander Golab, Benjamin Rever, Wolfram Tetzlaff, Dena Shahriari   +8 more
wiley   +1 more source

Integrated Ultrasonic Platform for Bioelectronic Control through Biological Barriers Based on Metasurface

Advanced Science, EarlyView.
A metasurface‐enabled ultrasonic platform achieves precise multi‐focal control through biological barriers, real‐time physiology‐driven modulation, and simultaneous wireless power and data transmission. By unifying wavefront engineering, closed‐loop feedback, and acoustic communication, this work establishes key enabling technologies toward scalable ...
Chuanxin Zhang, Hanjie Xiao, Xue Jiang, Dean Ta   +3 more
wiley   +1 more source

Miniaturized Broadband Bi-Yagi Antenna Array for Ambient RF Energy Harvesting. [PDF]

Micromachines (Basel), 2023
Abdulwali ZSA, Alqahtani AH, Aladadi YT, Alkanhal MAS, Al-Moliki YM, Aljaloud K, Alresheedi MT.   +6 more
europepmc   +1 more source

Recent Advances and Challenges in Ammonia‐Hydrogen Energy Conversion

Advanced Science, EarlyView.
This work summarizes the latest progress of various catalytic methods in ammonia‐hydrogen energy conversion. The challenges and outlook of ammonia‐hydrogen energy conversion system are also emphasized. This work expects to build a blueprint of renewable and efficient ammonia‐hydrogen energy conversion systems under mild conditions.
Menghao Lv, Runchao Qin, Jianshuo Chen, Kaiwen Yang, Jianwei Lu, Weiwei Lei, Yifu Yu   +6 more
wiley   +1 more source