Results 51 to 60 of about 11,324 (226)

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

open access: yesAdvanced 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   +9 more
wiley   +1 more source

A High Sensitivity Preamplifier for Quartz Tuning Forks in QEPAS (Quartz Enhanced PhotoAcoustic Spectroscopy) Applications

open access: yesSensors, 2017
All the preamplifiers dedicated for Quartz Enhanced PhotoAcoustic Spectroscopy (QEPAS) applications that have so far been reported in the literature have been based on operational amplifiers working in transimpedance configurations.
Tomasz Starecki, Piotr Z. Wieczorek
doaj   +1 more source

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

open access: yesAdvanced 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   +15 more
wiley   +1 more source

Radiation-hardened-by-design preamplifier with binary weighted current source for radiation detector

open access: yesNuclear Engineering and Technology
This paper presents a radiation-hardened-by-design preamplifier that utilizes a self-compensation technique with a charge-sensitive amplifier (CSA) and replica for total ionizing dose (TID) effects.
Minuk Seung   +3 more
doaj   +1 more source

Wide-Band Optical Fibre System for Investigation of MEMS and NEMS Deflection

open access: yesMetrology and Measurement Systems, 2014
In this work the construction of experimental setup for MEMS/NEMS deflection measurements is presented. The system is based on intensity fibre optic detector for linear displacement sensing.
Orłowska Karolina   +8 more
doaj   +1 more source

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

open access: yesAdvanced 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   +9 more
wiley   +1 more source

Métodos de análisis para preamplificadores de audio

open access: yesIngenierías USBMed, 2010
En este artículo, se plantean metodologías para la medición de los parámetros más importantes de un preamplificador: slew rate –tiempo de respuesta–, ancho de banda –respuesta en frecuencia–, distorsión armónica total –THD%– y relación señal ruido; para ...
Andrés F. Pardo V.   +1 more
doaj  

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

open access: yesAdvanced 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   +12 more
wiley   +1 more source

DESIGN OF THE CONTACT POTENTIALS DIFFERENCE PROBES

open access: yesПриборы и методы измерений, 2016
The contact potential difference probes distinguished by great variety and produced mostly in the laboratory for specific experimental applications. As a rule, they consist of commercially available instrumentation, and have a number of disadvantages ...
K. U. Pantsialeyeu   +2 more
doaj   +1 more source

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

open access: yesDeep 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   +5 more
wiley   +1 more source

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