Results 41 to 50 of about 3,824 (171)

Differential Bloch Oscillating Transistor Pair

open access: yes, 2013
We examine a Bloch Oscillating Transistor pair as a differential stage for cryogenic low-noise measurements. Using two oppositely biased, nearly symmetric Bloch Oscillating Transistors, we measured the sum and difference signals in the current gain and ...
Hakonen, Pertti J.   +3 more
core   +1 more source

Development of a multistage laser frequency stabilization for an interferometric gravitational-wave detector [PDF]

open access: yes, 2003
Laser frequency stabilization is essential for interferometric gravitational-wave detectors to attain their target sensitivity. We have designed a multistage laser frequency stabilization system which has been applied in the development of the TAMA 300 ...
Barton, Mark A., Nagano, Shigeo
core   +1 more source

Multifunctional E‐Tattoos Based on Electrospun PVBVA Fibers Coated with Ti3C2Tx MXene for Energy Harvesting, Energy Storage, and Biometric Sensing

open access: yesAdvanced Science, Volume 13, Issue 11, 23 February 2026.
This study explores a novel E‐tattoo made from PVBVA fibers coated with Ti3C2Tx MXene. The device is designed to harvest energy directly from the human body, providing power for itself. The research demonstrates the E‐tattoo's capability for charge storage and its potential for health monitoring through integrated ECG and EMG sensing, all within a ...
Ajay Pratap   +16 more
wiley   +1 more source

Organic Electrochemical Transistors in Tissue‐Interfaced Bioelectronics

open access: yesAdvanced Science, Volume 13, Issue 6, 30 January 2026.
This article reviews the design, fabrication, and biological application of organic electrochemical transistors (OECTs), emphasizing their potential in tissue‐interfaced bioelectronics. It covers the fundamental principles of OECTs, strategies for enhancing tissue interfacing, and the development of skin‐mounted and implantable systems.
Ruixiang Bai, Zeyu Zhao, Feng Yan
wiley   +1 more source

Optical and RF Metrology for 5G

open access: yes, 2018
Specification standards will soon be available for 5G mobile RF communications. What optical and electrical metrology is needed or available to support the development of the supporting optical communication systems?
Bieler, Mark   +4 more
core   +1 more source

Rapid Nasal Breathing as a Biometric Trigger: High‐Accuracy Electroencephalogram‐Based Authentication for Clinical Applications

open access: yesThe Clinical Respiratory Journal, Volume 20, Issue 1, January 2026.
Our study demonstrates rapid nasal breathing‐evoked EEG signals enable high‐accuracy (98.3%) biometric authentication via a hybrid ResNet‐Swin Transformer model. This noninvasive approach eliminates external stimuli, offering secure patient identification for critical respiratory care settings, such as ventilator access and continuous monitoring ...
Cai Chen   +8 more
wiley   +1 more source

Enhancing CMRR in Fully Differential Amplifiers via Power Supply Bootstrapping

open access: yesChips
Fully differential amplifier circuits are well suited for instrumentation front ends and signal-conditioning applications. They offer high common-mode rejection ratios (CMRRs) regardless of the passive component tolerances but remain sensitive to ...
Enrique M. Spinelli   +3 more
doaj   +1 more source

Electronically Tunable Transimpedance Instrumentation Amplifier Based on OTRA

open access: yesJournal of Engineering, 2013
Operational transresistance amplifier (OTRA) is the most suitable analog building block (ABB) for transimpedance type signal processing due to its very nature of current input and voltage output.
Rajeshwari Pandey   +2 more
doaj   +1 more source

Fully Integrated Biopotential Acquisition Analog Front-End IC

open access: yesSensors, 2015
A biopotential acquisition analog front-end (AFE) integrated circuit (IC) is presented. The biopotential AFE includes a capacitively coupled chopper instrumentation amplifier (CCIA) to achieve low input referred noise (IRN) and to block unwanted DC ...
Haryong Song   +3 more
doaj   +1 more source

A 0.3V Rail-to-Rail Three-Stage OTA With High DC Gain and Improved Robustness to PVT Variations

open access: yesIEEE Access, 2023
This paper presents a novel 0.3V rail-to-rail body-driven three-stage operational transconductance amplifier (OTA). The proposed OTA architecture allows achieving high DC gain in spite of the bulk-driven input.
Riccardo Della Sala   +4 more
doaj   +1 more source

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