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The measurement of the biological tissue's electrical impedance is an active research field that has attracted a lot of attention during the last decades. Bio-impedances are closely related to a large variety of physiological conditions;…

Emerging Technologies · Computer Science 2015-07-14 Saul Rodriguez , Stig Ollmar , Muhammad Waqar , Ana Rusu

This brief presents a technique for compensating the temperature coefficient (TC) of a bandgap reference (BGR) using temperature characteristics of transistor's current gain \b{eta}. As a comparison, three BGR circuits built with Si BJTs…

Applied Physics · Physics 2018-07-18 Hechen Wang , Fa Foster Dai , Michael Hamilton

We present inverted metamorphic Ga0.3In0.7As photovoltaic converters with sub-0.60 eV bandgaps grown on InP and GaAs substrates. The compositionally graded buffers in these devices have threading dislocation densities of 1.3x10^6 cm^-2 and…

We compared the performance of a commercial ammeter and a home-made integrating electrometer in reading ionisation chamber currents less than 100 pA. The integrating electrometer charges a capacitor with the unknown current and measures the…

Instrumentation and Detectors · Physics 2019-03-08 Stephen P. Giblin , Giuseppe Lorusso

Adiabatic quantum-flux-parametron (AQFP) circuits can operate with extremely small energy dissipation (~1 zJ per junction at 5 GHz) and high sensitivity (~1 {\mu}A) owing to adiabatic switching. Thus, AQFP logic is suitable to use as…

Applied Physics · Physics 2021-02-25 Naoki Takeuchi , Taiki Yamae , Hideo Suzuki , Nobuyuki Yoshikawa

The Large High Altitude Air Shower Observatory (LHAASO) project has been proposed for the survey and study of cosmic rays. In the LHAASO project, the Water Cherenkov Detector Array (WCDA) is one of major detectors for searching gamma ray…

Instrumentation and Detectors · Physics 2016-01-20 Weihao Wu , Lei Zhao , Yu Liang , Li Yu , Jianfeng Liu , Shubin Liu , Qi An

The gain measurements of several 1 mm-thick, 10$\times$10 cm$^2$ Thick Gaseous Electron Multipliers (ThGEMs), operated in pure argon at 3.3 bar and room temperature are presented. Electrostatic simulations, performed with the COMSOL…

Instrumentation and Detectors · Physics 2025-10-07 G. Eurin , A. Delbart , R. De Oliveira , A. Drozd , P. Granger , M. Karolak , B. Mehl

Glucose biosensors play an important role in the diagnosis and continued monitoring of the disease, diabetes mellitus. This report proposes the development of a novel enzymatic electrochemical glucose biosensor based on TiO$_2$ nanotubes…

This paper presents a compact programmable biphasic stimulator for cochlear implants. By employing double-loop negative feedback, the output impedance of the current generator is increased, while maximizing the voltage compliance of the…

Neurons and Cognition · Quantitative Biology 2015-02-03 W. Ngamkham , M. N. van Dongen , W. A. Serdijn , C. J. Bes , J. J. Briaire , J. H. M. Frijns

n-TPA-IFA organic material was synthesized and deposited on p-Si by spin coating method to produce n-TPA-IFA/p-Si heterojunction diode. We determined that the dielectric constant and energy band gap of TPA-IFA organic material were 3.91 and…

Applied Physics · Physics 2024-02-08 Sukru Cavdar , Pinar Oruc , Serkan Eymur , Nihat Tugluoglu

This paper presents the uTCA4.0-based BPM electronics for PIP-II, featuring four 250 MSPS ADCs and a Xilinx UltraScale+ MPSoC FPGA with 10 GbE uplink. Design elements include signal conditioning, clock, and thermal management. The FPGA…

Accelerator Physics · Physics 2025-09-22 Shengli Liu , Nathan Eddy , A. Semenov , Brian Fellenz

Characteristics of high sensitivity MEMS pressure sensor chip for 10 kPa utilizing a novel electrical circuit are presented. The electrical circuit uses piezosensitive differential amplifier with negative feedback loop (PDA-NFL) based on…

Instrumentation and Detectors · Physics 2023-02-15 Mikhail Basov

Piezoelectric optomechanical platforms present one of the most promising routes towards efficient transduction of signals from the microwave to the optical frequency domains. New device architectures need to be developed in order to achieve…

Optics · Physics 2022-11-22 Ankur Khurana , Pisu Jiang , Krishna C. Balram

Accurate characterization of ferroelectric properties in polymer piezoelectrics is critical for optimizing the performance of flexible and wearable ultrasound transducers, such as screen-printed PVDF devices. Standard charge measurement…

Systems and Control · Electrical Eng. & Systems 2024-10-23 Marc-Andre Wessner , Federico Villani , Sofia Papa , Kirill Keller , Laura Ferrari , Francesco Greco , Luca Benini , Christoph Leitner

HPgTPCs have benefits such as low energy threshold, magnetisability, and 4$\pi$ acceptance, making them ideal for neutrino experiments such as DUNE. We present the design of an FPGA-based solution optimised for ND-GAr, which is part of the…

Microwave sensors are very promising for sensing the blood glucose levels non-invasively for their non-ionizing nature, miniaturized sizing, and low health risks for diabetics. All these features offer the possibility for realizing a…

This paper presents a Gm-C dynamic amplifier with high linearity and high temperature and power supply voltage stability. The main part of the amplifier employs two asymmetric differential pairs to enhance transconductance linearity. The…

Signal Processing · Electrical Eng. & Systems 2025-08-21 Jinkun Yang , Pengbin Xu

Conventional scanning tunneling microscopy (STM) is limited to a bandwidth of circa 1kHz around DC. Here, we develop, build and test a novel amplifier circuit capable of measuring the tunneling current in the MHz regime while simultaneously…

Applied Physics · Physics 2018-10-09 K. M. Bastiaans , T. Benschop , D. Chatzopoulos , D. H. Cho , Q. Dong , Y. Jin , M. P. Allan

A new approach was developed for the design of front-end circuits for semiconductor radiation detectors. The readout scheme consists of a first stage made of only a few components located close to the detector, and of a remote second stage…

Instrumentation and Detectors · Physics 2014-09-02 L. Cassina , C. Cattadori , A. Giachero , C. Gotti , M. Maino , G. Pessina

Diabetes is a prevalent chronic condition that compromises the health of millions of people worldwide. Minimally invasive methods are needed to prevent and control diabetes but most devices for measuring glucose levels are invasive and not…

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