Results 91 to 100 of about 54,140 (338)

Wireless recording of the calls of Rousettus aegyptiacus and their reproduction using electrostatic transducers [PDF]

, 2008
Bats are capable of imaging their surroundings in great detail using echolocation. To apply similar methods to human engineering systems requires the capability to measure and recreate the signals used, and to understand the processing applied to ...
D A Waters, G Hayward, Henson O W, Henson O W, I Farr, Kick S A, Lancaster W C, Lancaster W C, Manthey W, Rafiq M, S G Pierce, S M Whiteley, Waters D A, Waters D A   +13 more
core   +1 more source

Millisecond‐Switching Dual‐Band/Dual‐Polarization Ka‐Band Wavefront Control Enabled by a Complementary Liquid‐Crystal Metasurface

Advanced Materials Technologies, EarlyView.
An LCD‐compatible complementary liquid‐crystal metasurface delivers dual‐band, dual‐polarized Ka‐band wavefront control with millisecond switching via a 10‐µm LC gap. Interlaced patch/slot pairs enable independent phase tuning at 28 and 38 GHz, while strategic 45° slot rotation suppresses parasitic resonances. Measurements on a 160 × 160‐cell prototype
Daehyeon Kim, Donggeun An, Hyunjae Shin, Youngno Youn, Wonbin Hong   +4 more
wiley   +1 more source

Research status of bidirectional wireless power transfer technology

Green Energy and Intelligent Transportation
With the expansion of the application field of wireless power transmission (WPT) technology, there is an urgent need for bidirectional wireless power transmission technology (BWPT) to realize the energy interaction between wireless charging devices. This
Yang Wu, Udaya K. Madawala, Lei Zhao, Xin Dai   +3 more
doaj   +1 more source

Stretchable platform enabled with wireless power for smart contact lenses [PDF]

, 2017
C
De Smet, Herbert, Vanfleteren, Jan, Vasquez Quintero, Andrés Felipe, Verplancke, Rik   +3 more
core   +1 more source

Laser Micromachining of Liquid Metal Patterns for Stretchable Electronic Circuits

Advanced Materials Technologies, EarlyView.
A cleanroom‐free fabrication strategy combines UV‐laser micromachining with a copper foil wetting layer to rapidly produce high resolution, liquid metal based stretchable electronic circuits on diverse substrates. The scalable, maskless process enables complex circuit designs (<$<$3 h, ∼$\sim$15/device) with excellent electrical stability under strain,
Merjen Palvanova, Patrick McManigal, Grace Fredrickson, Eric J. Markvicka   +3 more
wiley   +1 more source

State-of-the-Art Developments of Acoustic Energy Transfer

International Journal of Antennas and Propagation, 2016
Acoustic energy transfer (AET) technology has drawn significant industrial attention recently. This paper presents the reviews of the existing AETs sequentially, preferably, from the early stage. From the review, it is evident that, among all the classes
Md Rabiul Awal, Muzammil Jusoh, Thennarasan Sabapathy, Muhammad Ramlee Kamarudin, Rosemizi Abd Rahim   +4 more
doaj   +1 more source

Bidirectional High-Efficiency Converter Based on the Capacitive Wireless Power Transfer Technique for Electric Vehicle Charging and Energy Storage App [PDF]

International Journal of Industrial Electronics, Control and Optimization
This article presents a transformer-less bidirectional converter, which is designed with dual resonant frequencies. It supports Electric Vehicle (EV) charging systems, via capacitive coupling wireless power transfer (CCWPT) technique.
Jasem Shahsevani, Reza Beiranvand
doaj   +1 more source

Hardware and Control Implementation of Electric Springs for Stabilizing Future Smart Grid with Intermittent Renewable Energy Sources [PDF]

, 2013
published_or_final_versio
Chaudhuri, B, Hui, SYR, Lee, CK
core   +1 more source

Wireless Power Transfer Modalities for Implantable Bioelectronics: Electromagnetic, Acoustic, and Magneto‐Dynamic Perspectives

Advanced Materials Technologies, EarlyView.
This review traces the evolution of wireless power transfer (WPT) for implantable medical devices, spanning electromagnetic, magnetoelectric, acoustic, and magneto‐dynamic systems. Quantitative comparisons of power, distance, and device scale highlight trade‐offs across modalities, while emerging hybrid mechanisms reveal strategies to overcome ...
Junyeop Kim, Yoonseok Park
wiley   +1 more source

Laser radio transmitter

, 2019
Since the days of Hertz, radio transmitters have evolved from rudimentary circuits emitting around 50 MHz to modern ubiquitous Wi-Fi devices operating at gigahertz radio bands.
Belyanin, Alexey, Capasso, Federico, Chevalier, Paul, Connors, Michael K., McNulty, Daniel, Piccardo, Marco, Rubin, Noah A., Schwarz, Benedikt, Tamagnone, Michele, Wang, Christine A., Wang, Yongrui   +10 more
core   +2 more sources