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Novel non-resonant, low-frequency pulse–current circuit for energy-efficient, low-noise transcranial magnetic stimulation [PDF]

open access: yesFrontiers in Neuroscience
IntroductionTranscranial magnetic stimulation (TMS) is increasingly used for non-invasive neuronal activation. By harnessing a pulsed magnetic field, TMS induces electric currents that target the central nervous system.
Xinhua Tan   +6 more
doaj   +2 more sources

A Low-Noise High-Resolution Temperature Measurement Technique Based on Inductive Voltage Divider and Alternating-Current Bridge [PDF]

open access: yesSensors
In the field of space gravitational wave detection, high-precision temperature measurement with a resolution at the micro-Kelvin level in the milli-Hertz frequency range is required to mitigate the interference caused by temperature fluctuations around ...
Shanghua Gao   +10 more
doaj   +2 more sources

A Compact Muon Tracker for Dynamic Tomography of Density Based on a Thin Time Projection Chamber with Micromegas Readout

open access: yesParticles, 2021
Tomography based on cosmic muon absorption is a rising technique because of its versatility and its consolidation as a geophysics tool over the past decade. It allows us to address major societal issues such as long-term stability of natural and man-made
Ignacio Lázaro Roche
doaj   +1 more source

Design and Experiment of Magnetic Antenna Vibration and Noise Reduction System

open access: yesApplied Sciences, 2022
The magnetic antenna can receive extremely weak underwater magnetic signals, and induce the magnetic field intensity which can reach the femto-tesla (fT) level, making it widely used in underwater electromagnetic signal detection.
Sijie Jiang   +5 more
doaj   +1 more source

Low-Cutoff Frequency Reduction in Neural Amplifiers: Analysis and Implementation in CMOS 65 nm

open access: yesFrontiers in Neuroscience, 2021
Scaling down technology demotes the parameters of AC-coupled neural amplifiers, such as increasing the low-cutoff frequency due to the short-channel effects. To improve the low-cutoff frequency, one solution is to increase the feedback capacitors' value.
Fereidoon Hashemi Noshahr   +5 more
doaj   +1 more source

Design of a Differential Low-Noise Amplifier Using the JFET IF3602 to Improve TEM Receiver

open access: yesMicromachines, 2022
The observed data of transient electromagnetic (TEM) systems is often contaminated by various noises. Even after stacking averages or applying various denoising algorithms, the interference of the system noise floor cannot be eliminated fundamentally ...
Shengjie Wang   +5 more
doaj   +1 more source

Printable Organic PIN Phototransistor and Its Application for Low Power and Noise Imaging Detection

open access: yesIEEE Photonics Journal, 2022
The power consumption and the opto-electric noise of organic photo-detectors are the challenges for large-scale detecting and imaging applications to surpass.
Zhi Tao   +6 more
doaj   +1 more source

Weak Capacitance Detection Circuit of Micro-Hemispherical Gyroscope Based on Common-Mode Feedback Fusion Modulation and Demodulation

open access: yesMicromachines, 2023
As an effective capacitance signal produced by a micro-hemisphere gyro is usually below the pF level, and the capacitance reading process is susceptible to parasitic capacitance and environmental noise, it is highly difficult to acquire an effective ...
Xiaoyang Zhang   +6 more
doaj   +1 more source

Biosignal Amplifiers Based on Low‐Noise Organic Transistors with Printed Electrodes

open access: yesAdvanced Electronic Materials, 2023
The monitoring of microvolt‐level biosignals such as electroencephalograms requires the application of low‐noise signal amplifier circuits, which, for single‐use cases, must be fabricated for disposability using low‐cost manufacturing techniques.
Tomoharu Kimura   +5 more
doaj   +1 more source

Design and Characterization of a Burst Mode 20 Mfps Low Noise CMOS Image Sensor

open access: yesSensors, 2023
This paper presents a novel ultra-high speed, high conversion-gain, low noise CMOS image sensor (CIS) based on charge-sweep transfer gates implemented in a standard 180 nm CIS process.
Xin Yue, Eric R. Fossum
doaj   +1 more source

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