Results 51 to 60 of about 2,110 (220)

Minimally-Invasive Neural Interface for Distributed Wireless Electrocorticogram Recording Systems

Sensors, 2018
This paper presents a minimally-invasive neural interface for distributed wireless electrocorticogram (ECoG) recording systems. The proposed interface equips all necessary components for ECoG recording, such as the high performance front-end integrated ...
Sun-Il Chang, Sung-Yun Park, Euisik Yoon
doaj   +1 more source

Recent Results on the Optoelectronic Feedback Preamplifier [PDF]

IEEE Transactions on Nuclear Science, 1970
A brief description of the optoelectronic feedback system is followed by an account of some interesting aspects of low-noise preamplifiers and detectors revealed by this work. These include the following items: 1. The observation of hole collection at the gate of a FET analogous to ion collection at the grid of a vacuum tube. 2.
Goulding, F.S., Walton, J.T., Pehl, R.H.
openaire   +2 more sources

Electrically Tunable Piezotronic Transistor by Coupling Interface Polar Symmetry and Strain Gradient

Advanced Science, EarlyView.
A macroscale tip‐induced strain gradient generates bulk piezo‐charges in GaN, enabling bias‐controlled shielding and selective Schottky barrier modulation. This strain‐gradient piezotronic transistor exhibits electrically switchable high‐ and low‐sensitivity states, providing ultrahigh strain sensitivity and wide tunability for adaptive mechanical ...
Gongwei Hu, Xiaoming Dong, Yihan Zhang, Yong Chao, Menglu Li, Min Liu, Liqing Pan, Lijie Li, Wei Huang, Fobao Huang   +9 more
wiley   +1 more source

Influence of Top Electrode Metal on Resistive Switching in Multilayer MOCVD MoS2 Memristors

Advanced Electronic Materials, EarlyView.
MoS2 memristors typically use evaporated noble metal electrodes. This study compares Pd, Ni, and Al electrodes and sputtered versus evaporated deposition. Pd is passive, while Ni damages MoS2, yielding poor switching. Sputtered Al enables reproducible ECM‐type switching with 95% yield, whereas evaporated Al forms an interfacial oxide that suppresses ...
Dennis Braun, Jing Liu, Vasilis A. Maroufidis, Hleb Fiadziushkin, Lukas Völkel, Jimin Lee, Sofía Cruces, Annika Grundmann, Ke Ran, Thorsten Wahlbrink, Holger Kalisch, Andrei Vescan, Joachim Mayer, Michael Heuken, Alwin Daus, Max C. Lemme   +15 more
wiley   +1 more source

Enhanced Synthesis of Cs2AgBiBr6 Single Crystals via Controlled Cooling for Enhanced Dual‐Band Light Detection

Advanced Electronic Materials, EarlyView.
This work presents a dual‐band photodetector based on the large‐scale, precise synthesis of Cs2AgBiBr6 single crystals. A rapid and efficient synthesis method is demonstrated, yielding high‐quality Cs2AgBiBr6 crystals with an average size of 2 × 2 × 1.5 mm3 and a production yield of 12.66%.
Yezhan Li, You Meng, Bowen Li, Jianbo Wu, Weijun Wang, Pengshan Xie, Yuxuan Zhang, Quan Quan, Qingfeng Zhou, Johnny C. Ho   +9 more
wiley   +1 more source

Ultrathin Aluminum–Air Batteries via Hygroscopic Electrolytes for Continuous Operation of Imperceptible On‐Skin Electronics

Advanced Energy Materials, EarlyView.
This study presents ultrathin, high‐capacity aluminum‐air batteries (AABs) for self‐sustaining, skin‐conformal electronics. By utilizing ambient moisture and oxygen alongside a LiCl‐based hygroscopic hydrogel electrolyte, the design significantly reduces battery thickness while preventing dehydration and Al self‐corrosion.
Jaeil Park, Inho Lee, Namhee Kim, Wonseok Shin, Joo Sung Kim, Daegun Kim, Giwon Lee, Jinhan Cho, Hoon‐Hee Ryu, Myung‐Han Yoon, Seung Joon Yoo, Woo‐Jin Song, Sungjun Park   +12 more
wiley   +1 more source

Valve vs. solid-state microphone preamplifier: a comparative study

Fields, 2017
This paper outlines research carried out to determine the perceptual and objective differences between a solid-state and a valve preamplifier running at low voltages. ABX testing was employed and showed that there were perceivable differences between the
doaj   +2 more sources

Shear behavior of bolt–grout interfaces under constant normal stiffness: Influence of grout strength and thickness

Deep Underground Science and Engineering, EarlyView.
The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang, Dongqi Shang, Yujing Jiang, Jinge Zhang, Hongbin Chen, Tianqi Jiang   +5 more
wiley   +1 more source

Compact laser amplifier with high gain based on Nd3+-doped SrF2 crystal

High Power Laser Science and Engineering
High gain greater than 106 is crucial for the preamplifiers of joule-class high-energy lasers. In this work, we present a specially designed compact amplifier using 0.5%Nd,5%Gd:SrF2 and 0.5%Nd,5%Y:SrF2 crystals.
Siqi Long, Lailin Ji, Xianghe Guan, Yong Cui, Fujian Li, Zhonghan Zhang, Tianxiong Zhang, Zhen Zhang, Jian Shi, Dong Liu, Ruijing He, Xiaohui Zhao, Tao Wang, Xiaoli Li, Jianjun Cao, Jinsheng Liu, Yanqi Gao, Liangbi Su, Zhan Sui   +18 more
doaj   +1 more source

Thermal‐induced fracture evolution and acoustic signature of Beishan granite: Insights into tensile strength of barrier system for high‐level radioactive waste disposal

Deep Underground Science and Engineering, EarlyView.
The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng, Shijie Li, Xiaozhao Li, Zhen Huang, Shangtong Yang, Wentao Xu, Biao Wang, Yun Wu   +7 more
wiley   +1 more source