Results 31 to 40 of about 654,074 (133)
A 90‐channel triaxial magnetoencephalography system using optically pumped magnetometers
Annals of the New York Academy of Sciences, Volume 1517, Issue 1, Page 107-124, November 2022., 2022 Magnetoencephalography (MEG) measures the tiny magnetic fields generated by current flow in the brain, but conventional MEG is hampered by cumbersome cryogenic field‐sensing technologies. Our wearable, 90‐channel triaxial optically‐pumped magnetometer (OPM) MEG system—in conjunction with precision magnetic field control that reduced background fields ...
Molly Rea +10 more
wiley +1 more source
Evolution of MEG: A first MEG‐feasible fluxgate magnetometer
Human Brain Mapping, Volume 42, Issue 15, Page 4844-4856, October 15, 2021., 2021 In the current article, we present the first solid‐state sensor feasible for magnetoencephalography (MEG) that works at room temperature. The sensor is a fluxgate magnetometer based on yttrium‐iron garnet films (YIGM). In this feasibility study, we prove the concept of using the YIGM in terms of MEG by registering a simple brain‐induced field—the human
Nikolay Koshev +7 more
wiley +1 more source
Impact of aperture angle on magnetostatic shielding performances of magnetic shield cylinders
AIP Advances, 2022 The spin exchange relaxation free (SERF) atomic magnetometer plays an important role in ultrahigh sensitive magnetic measurements. With the improvement of signal response and the reduction of sensor noise, the sensitivity of the SERF atomic magnetometer ...
Lei Wang +3 more
doaj +1 more source
A New Method for Reduction of Atomic Magnetometer Noise Based on Multigene Genetic Programming
IEEE Access, 2019 An ultra-high precision magnetic field measurement is of great scientific and economic significance. An atomic magnetometer that operates in a spin-exchange relaxation-free (SERF) regime has superior sensitivity and, thus, is of great significance for ...
Wei Quan, Feng Liu, Wenfeng Fan
doaj +1 more source
Photonics, 2023 The measurement of atomic spin polarization distribution in spin-exchange relaxation free (SERF) magnetometer is an important topic for improving the sensitivity and consistency of multi-channel magnetic field measurement applications.
Xiujie Fang +7 more
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The suppression of the probe laser pumping effect in SERF atomic magnetometer
Frontiers in Physics, 2023 Introduction: A spin exchange relaxation free atomic magnetometer, as an ultra-highly sensitive magnetic field sensor, is limited by the performance of the probe laser system.
Qian Cao +5 more
doaj +1 more source
High resolution field imaging with atomic vapor cells [PDF]
, 2015 In this thesis, I report on the development of imaging techniques in atomic vapor cells. This is a relatively unexplored area, despite the ubiquitous use of imaging in experiments with ultracold atoms.
Horsley, Andrew
core +1 more source
Multilayer Spindle Shaped Magnetic Shielding Device for SERF Atomic Magnetometer Application
IEEE Access, 2020 Most of shielding devices currently used for SERF magnetometers are multilayer cylindrical magnetic shielding barrels. This article studies a new multilayer spindle shaped magnetic shielding barrel for the spin exchange relaxation free (SERF ...
Zhengkun Fan +6 more
doaj +1 more source
Investigation on Rotation Response of Spin-Exchange Relaxation-Free Atomic Spin Gyroscope
IEEE Access, 2019 Spin-exchange relaxation-free atomic spin gyroscope (SERF gyro) has ultrahigh theoretical sensitivity and is regarded as one of the most potential atomic gyroscopes.
Yuanhong Yang +5 more
doaj +1 more source
Journal of Sensors, Volume 2015, Issue 1, 2015., 2015 The ultrahigh sensitivity atomic spin magnetometer as the magnetic measurement sensor has received much concern. The performance of the magnetic shielding cylinder is one of the key factors constraining the atomic spin magnetometer’s sensitivity. In order to effectively improve the performances of the magnetic shielding, the parameter optimization ...
Hong Zhang +4 more
wiley +1 more source