Results 101 to 110 of about 2,930 (181)
Integrating EEG and MEG signals to improve motor imagery classification in brain-computer interfaces
, 2018 We propose a fusion approach that combines features from simultaneously recorded electroencephalographic (EEG) and magnetoencephalographic (MEG) signals to improve classification performances in motor imagery-based brain-computer interfaces (BCIs).
Bassett, Danielle S. +6 more
core +3 more sources
Applied Sciences, 2020 This paper analyzes the noise sources in photoelectric detection circuits with several low-noise operational amplifiers cores. The fabricated circuits are low-noise pre-amplifiers that are used for optically pumped magnetometers. In the proposed circuits,
Leisong Liu +4 more
doaj +1 more source
High‐Density and Scalable Graphene Hall Sensor Arrays Through Monolithic CMOS Integration
Advanced Electronic Materials, Volume 12, Issue 8, 20 April 2026.This work explores strategies to create high‐density arrays of graphene Hall‐effect magnetic field sensors through monolithic integration with silicon CMOS biasing and multiplexing circuitry. High sensor yield and magnetic sensing performance are achieved through careful choices in the custom CMOS chip design and the graphene integration process.
Vasant Iyer +4 more
wiley +1 more source
A modular optically pumped magnetometer system
Quantum Science and TechnologyAbstract To address the demands in healthcare and industrial settings for spatially resolved magnetic imaging, we present a modular optically pumped magnetometer (OPM) system comprising a multi-sensor array of highly sensitive quantum magnetometers.
T Coussens +11 more
openaire +2 more sources
Advanced Electronic Materials, Volume 12, Issue 8, 20 April 2026.The VO2 layer is found to be a tunable orbital current source. The damping‐like spin–orbit torque efficiency is significantly enhanced across VO2’s metal‐insulator transition temperature in the VO2/Pt/Co/Pt multilayers, leading to 60% reduction in the power consumption of magnetization switching, which paves the way for the development of energy ...
Ye Liu +9 more
wiley +1 more source
Ultra-sensitive Magnetic Microscopy with an Optically Pumped Magnetometer [PDF]
Scientific Reports, 2016 AbstractOptically pumped magnetometers (OPMs) based on lasers and alkali-metal vapor cells are currently the most sensitive non-cryogenic magnetic field sensors. Many applications in neuroscience and other fields require high-resolution, high-sensitivity magnetic microscopic measurements. In order to meet this demand we combined a cm-size spin-exchange
Young Jin Kim, Igor Savukov
openaire +2 more sources
Development of an optical cardio-magnetometer [PDF]
, 2006 Diese Arbeit beschreibt die Entwicklung eines neuen Typs von Kardiomagnetometer, d.h. eines Geräts mit dem man das Magnetfeld des schlagenden menschlichen Herzens messen kann.
Bison, Georg +3 more
core
Breakdown of Angular Momentum Selection Rules in High Pressure Optical Pumping Experiments
, 2010 We present measurements, using two complementary methods, of the breakdown of atomic angular momentum selection rules in He-broadened Rb vapor. Atomic dark states are rendered weakly absorbing due to fine-structure mixing during Rb-He collisions.
B. Lancor +7 more
core +1 more source
New Limits on Local Lorentz Invariance in Mercury and Cesium
, 2012 We report new bounds on Local Lorentz Invariance (LLI) violation in Cs and Hg. The limits are obtained through the observation of the the spin- precession frequencies of 199Hg and 133Cs atoms in their ground states as a function of the orientation of an ...
A. Foss +7 more
core +1 more source
Spin-exchange relaxation free magnetometry with Cs vapor
, 2007 We describe a Cs atomic magnetometer operating in the spin-exchange relaxation-free (SERF) regime. With a vapor cell temperature of $103^\circ\rm{C}$ we achieve intrinsic magnetic resonance widths $\Delta B=17 {\rm \mu G}$ corresponding to an electron ...
D. Budker +6 more
core +1 more source