Results 61 to 70 of about 699 (162)

A modular optically pumped magnetometer system

Quantum Science and Technology
Abstract 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, A Gialopsou, C Abel, M G Bason, T M James, W Evans, M T M Woodley, D Nightingale, D Nicolau, L Page, F Oručević, P Krüger   +11 more
openaire   +2 more sources

3D‐Printed Magnetoelectronics for Interactive Appliances and Self‐Aware 4D‐Printed Mechatronics

Advanced Science, EarlyView.
3D‐printed magnetoelectronics integrate high‐performance magnetic field sensing directly into complex structural components. Flexible spring and cross‐shaped sensors exhibit giant magnetoimpedance and 3D Hall sensing for vector field reconstruction. Applications include smart‐home switches, robotic joysticks, volumetric magnetometers, and self‐aware 4D‐
Eduardo Sergio Oliveros‐Mata, Anna Martin Vilardell, Fabian Ganss, Christoph Leyens, Lukas Stepien, Denys Makarov   +5 more
wiley   +1 more source

Four-channel optically pumped atomic magnetometer for magnetoencephalography

Optics Express, 2016
We have developed a four-channel optically pumped atomic magnetometer for magnetoencephalography (MEG) that incorporates a passive diffractive optical element (DOE). The DOE allows us to achieve a long, 18-mm gradiometer baseline in a compact footprint on the head.
Anthony P, Colombo, Tony R, Carter, Amir, Borna, Yuan-Yu, Jau, Cort N, Johnson, Amber L, Dagel, Peter D D, Schwindt   +6 more
openaire   +2 more sources

Atomically Modulating Competing Exchange Interactions in Centrosymmetric Skyrmion Hosts GdRu2X2 (X = Si and Ge)

Advanced Electronic Materials, EarlyView.
Our work bridges the gap between skyrmion discovery and material design by demonstrating how atomic‐scale control of exchange interactions enables tunable skyrmion phase transitions in centrosymmetric magnetic metals. ABSTRACT Magnetic skyrmions are topologically protected spin states that hold promise for shaping the future of electronics.
Dasuni N. Rathnaweera, Xudong Huai, K. Ramesh Kumar, Michał J. Winiarski, Tomasz Klimczuk, Allana G. Iwanicki, Satya K. Kushwaha, Martin Mourigal, Tyrel M. McQueen, Thao T. Tran   +9 more
wiley   +1 more source

Wavelength Locking of Vertical-Cavity Surface-Emitting Laser in Optically Pumped Magnetometer

Shanghai Jiaotong Daxue xuebao
Aimed at the requirements of optically pumped magnetometer (OPM) for miniaturization, low power consumption and laser frequency stability, a wavelength locking control scheme for vertical-cavity surface-emitting laser is proposed.
LUO Manruo, LI Shaoliang, HUANG Yiming, ZHANG Chi, WU Zhaocai, LIU Hua
doaj   +1 more source

Polarization‐Dependent Calibration of Nitrogen‐Vacancy Axes for Precise Three‐Dimensional Magnetic Field Vector Determination

Advanced Physics Research, EarlyView.
Using polarization‐controllable pump light as the measurement basis, we break the polarization symmetry of NV center fluorescence and build the correlation between polarization direction and NV axis orientation, achieving high‐precision optical calibration of NV axes.
Ji Guo, Ziyan Li, Sitong Ding, Xiangyu Kang, Xiumin Gao   +4 more
wiley   +1 more source

Facial magnetomyography using an array of optically pumped magnetometer

Laryngo-Rhino-Otologie
Measuring facial muscle activity is crucial in the diagnosis of facial palsy. This study investigated whether contactless Magnetomyography (MMG) using optically pumped magnetometers (OPM) is feasible for visualizing facial muscle activity.An anatomically shaped mask featuring eleven OPM was arranged on one side of the face of five healthy subjects. MMG
von Fraunberg, Johannes, Lu, Hongyu, Yang, Haodi, Marquetand, Nura, Braun, Christoph, Rüttiger, Lukas, Wolpert, Stephan, Knipper, Marlies, Siegel, Markus, Löwenheim, Hubert, Marquetand, Justus   +10 more
openaire   +2 more sources

Detection of Fetal Arrhythmia by Using Optically Pumped Magnetometers

JACC: Clinical Electrophysiology, 2018
Fetal magnetocardiography (fMCG) is an emerging technology that has provided invaluable insight into the mechanisms of fetal arrhythmia. Its efficacy for diagnosis and management of serious fetal arrhythmia has been acknowledged in the recent American Heart Association Statement on Diagnosis ...
Margo, Batie, Sarah, Bitant, Janette F, Strasburger, Vishal, Shah, Orang, Alem, Ronald T, Wakai   +5 more
openaire   +2 more sources

Photothermal–Magnetocaloric Coupled Evaporators for Actively Adjustable Water Evaporation and Oil–Water Purification in Complex Environments

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A photothermal–magnetocaloric coupled aerogel evaporator is developed for actively adjustable water evaporation in complex environments. Magnetocaloric heating provides active energy compensation under low‐light conditions and disrupts interfacial hydrogen‐bond networks to promote evaporation.
Jingbo He, Dan Yang, Chunyu Yang, Ruihan Guo, Mengshu Xu, Dongxue Wang, Zhuoran Yang, Jian Huang, Wei Guo   +8 more
wiley   +1 more source

Magnetic field imaging with microfabricated optically-pumped magnetometers

Optics Express, 2017
A multichannel imaging system is presented, consisting of 25 microfabricated optically-pumped magnetometers. The sensor probes have a footprint of less than 1 cm2 and a sensitive volume of 1.5 mm × 1.5 mm × 1.5 mm and connect to a control unit through optical fibers of length 5 m.
Alem, Orang, Mhaskar, Rahul, Jiménez-Martínez, Ricardo, Sheng, Dong, LeBlanc, John, Trahms, Lutz, Sander, Tilmann, Kitching, John, Knappe, Svenja   +8 more
openaire   +2 more sources