Results 61 to 70 of about 209,502 (272)

Terahertz Waveform‐Selective Antenna Using a Patch Structure Loaded with Nonlinear Circuits

Advanced Photonics Research, EarlyView.
A waveform‐selective antenna that integrates the functions of waveform selectivity, electromagnetic shielding, and EM wave radiation has been proposed. By integrating different nonlinear circuits and selecting appropriate component values, the antenna can achieve high reflection of either a pulse wave or a continuous wave, while allowing the other ...
Zeting Li, Kai‐Da Xu, Pin Wen
wiley   +1 more source

Randomized preclinical study of machine perfusion in vascularized composite allografts

BJS (British Journal of Surgery), EarlyView., 2020
This study was designed to identify the optimum machine perfusion parameters for preservation of limbs before transplantation, and determine whether this was better than cold storage. Normothermic machine perfusion at a pressure of 70 mmHg (NMP‐70) provided superior preservation to cold storage after transplantation.
K. R. Amin, J. P. Stone, J. Kerr, A. Geraghty, L. Joseph, A. Montero‐Fernandez, J. K. Wong, J. E. Fildes   +7 more
wiley   +1 more source

Inverse‐Designed on‐Chip Terahertz Three‐Channel Mode and Wavelength Division Demultiplexer

Advanced Photonics Research, EarlyView.
An ultracompact terahertz demultiplexer is developed using a hybrid inverse design that combines genetic algorithms with topology optimization. The device enables simultaneous mode‐ and wavelength‐division multiplexing within a footprint smaller than two wavelengths.
Faqian Chong, Yulun Wu, Bingtao Gao, Shilong Li, Hongsheng Chen, Song Han   +5 more
wiley   +1 more source

Pneumatic gripping system based on airflow proximity sensing and a self-feedback principle [PDF]

Mechanical Sciences
In pneumatic systems, the airflow circuit is both a driving source and a carrier of pressure, flow, and other information elements. In response to relying on electronic sensors and controllers to achieve closed-loop control in pneumatic systems, a theory
Y. Ni, J. Yang, Q. Ouyang, J. Peng
doaj   +1 more source

Sub-6 GHz High FOM Liquid Crystal Phase Shifter for Phased Array Antenna

IEEE Journal of Microwaves, 2022
This paper presents a novel structure based on liquid crystal (LC) technology to achieve a high figure of merit $(FOM)$ phase shifter that works at sub-6 $GHz$ frequencies.
Mohammad Ali Panahi, Lap Yeung, Maziar Hedayati, Yuanxun Ethan Wang   +3 more
doaj   +1 more source

Broadband Butler Matrices with the Use of High-Pass LC Sections as Left-Handed Transmission Lines [PDF]

, 2014
An application of left-handed transmission line sections in Butler matrices has been investigated. It has been shown, for the first time, that the utilization of both left-handed and right-handed transmission lines allows for broadband differential phase
Gruszczynski, S., Staszek, K., Wincza, K.   +2 more
core   +1 more source

Behavioral Models of I/O Ports from Measured Transient Waveforms [PDF]

, 2002
This paper addresses the development of accurate and efficient behavioral models of digital integrated circuit ports from measured transient responses.
Canavero, Flavio, Maio, Ivano Adolfo, Stievano, Igor Simone   +2 more
core   +1 more source

Modular, Textile‐Based Soft Robotic Grippers for Agricultural Produce Handling

Advanced Robotics Research, EarlyView.
This article introduces textile‐based pneumatic grippers that transform simple textiles into robust bending actuators. Detailed experiments uncover how cut geometry and fabric selection shape performance. Successful handling of fragile agricultural items showcases the potential of textile robotics for safe, scalable automation in food processing and ...
Zeyu Hou, Eran Beeri Bamani, Joao Buzzatto, Bryan Busby, Lucas Ferrari Gerez   +4 more
wiley   +1 more source

A Simple Analytical Solution for the Designing of the Birdcage RF Coil Used in NMR Imaging Applications

Applied Sciences, 2020
A novel analytical solution for the designing of the birdcage RF coil has been demonstrated in this paper. A new concept of dominant resonance path has been introduced in this paper which is used to identify the specific closed current loop in the ...
Young Cheol Kim, Hyun Deok Kim, Byoung-Ju Yun, Sheikh Faisal Ahmad   +3 more
doaj   +1 more source

IGZO‐Based First Spike Timing Tactile Encoders and Coupling‐Enhanced Transistor Synapses for Efficient Spiking Neural Networks

Advanced Science, EarlyView.
Here, a bioinspired light‐accelerated neuromorphic system that seamlessly links tactile sensing, first‐spike‐timing (FST) encoding, and light–electric synaptic learning. Pressure stimuli trigger FST spikes in dual‐gate PDTFTs, while GaOx/IGZO hetero‐synapses exhibit enhanced memory under optical–electrical co‐activation, enabling spiking neural ...
Dan Cai, Jinyong Wang, Tianchen Zhao, Miao Shen, Yunbo Liu, Tieyi Zhang, Fangjie Zhang, Yang Wang, Yadong Jiang, Deen Gu   +9 more
wiley   +1 more source