Results 81 to 90 of about 1,280 (179)

Magnetoencephalography With Optically Pumped He-4 Magnetometers at Ambient Temperature

, 2019
WOS:000455110500009International audienceIn this paper, we present the first proof of concept confirming the possibility to record magnetoencephalographic (MEG) signals with Optically Pumped Magnetometers (OPMs) based on the parametric resonance of 4 He ...
Labyt, Etienne, Matthieu Le Prado, Sophie Morales, Lenouvel, Francois, Gilles Cauffet, Francois Lenouvel, Francis Bertrand, Etienne Labyt, Laloy, Augustin Palacios, Cauffet, Gilles, Bertrand, Francois, Marie-Constance Corsi, Corsi, Marie-Constance, Fourcault, William, Berger, Francois, Augustin Palacios Laloy, William Fourcault, Le Prado, Matthieu, Francois Berger, Morales, Sophie   +19 more
core   +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

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

Advances in optically pumped He4 magnetometers : Resonance and nonresonance techniques

, 1970
Samples of optically pumped 23S1 helium atoms are currently studied in our laboratory for use in advanced magnetometer applications. The results of recent investigations of the effect of pumping beam orientation with respect to the observed magnetic ...
R.E. Slocum, Slocum, R.E.
core   +1 more source

Multi‐material and dual‐stimulus coupled actuation micro‐gears for shape–rotation control in intelligent micro‐electro‐mechanical systems

FlexMat, EarlyView.
A multi‐material and dual‐stimulus coupled actuation micro‐gear (MDCAMG) is developed via femtosecond‐laser 3D printing combined with magnetic nanoparticle absorption, enabling integrated environmental sensing and remote actuation at the microscale. The device incorporates a pH‐responsive hydrogel matrix for autonomous swelling/shrinking and a magnetic
Sida Peng, Shengzhi Sun, Jian Li, Yi Zhu
wiley   +1 more source

The Evolution of Autonomous Systems for Planetary Cave Exploration: A Review

Journal of Field Robotics, EarlyView.
ABSTRACT The exploration of Subsurface Access Points (SAPs), such as lava tubes on the Moon and Mars, has gained significant interest due to their potential as stable environments shielded from surface radiation and temperature extremes. These sites are considered high‐value targets for detecting water and signs of ancient life, and assessing their ...
Sarah Swinton, Daniel Mitchell, Jamie Blanche, Euan McGookin, David Flynn   +4 more
wiley   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

Technologies for equine welfare and performance monitoring under field conditions – Where do we stand?

Equine Veterinary Journal, Volume 58, Issue 4, Page 872-888, July 2026.
Abstract The need for comprehensive equine welfare assessments has become particularly evident amid ongoing debates about the social licence to operate in equestrian sports. During exercise, multiple physiological systems, principally the cardiovascular, respiratory, muscular, thermoregulatory, endocrine, and locomotory systems, undergo complex ...
Rhana Mackie Aarts, Esther W. Siegers, Filipe M. Serra Braganca, P. René van Weeren   +3 more
wiley   +1 more source

Optically pumped magnetometers: From quantum origins to multi-channel magnetoencephalography

, 2019
Optically Pumped Magnetometers (OPMs) have emerged as a viable and wearable alternative to cryogenic, superconducting MEG systems. This new generation of sensors has the advantage of not requiring cryogenic cooling and as a result can be flexibly placed ...
Hill, Ryan M., López, JD, Brookes, Matthew J., Shah, V, Holmes, N, Hill, RM, Boto, Elena, Roberts, Gillian, Brookes, MJ, Holmes, Niall, Mellor, S, López, José David, Bowtell, Richard, Barnes, Gareth R., Boto, E, Leggett, J, Mellor, Stephanie, Bowtell, R, Shah, Vishal, Roberts, G, Tierney, TM, Tierney, Tim M., Barnes, GR, Leggett, James   +23 more
core   +1 more source