Results 121 to 130 of about 90,554 (217)

Control of Covalent Bond Enables Efficient Magnetic Cooling

Advanced Materials, Volume 38, Issue 7, 2 February 2026.
Giant and reversible magnetocaloric effect (MCE) is achieved by tuning covalency through sub‐unit‐cell chemical engineering, establishing a novel design principle for effective hysteresis control in magnetocaloric materials. Abstract Magnetic cooling, harnessing the temperature change in matter when exposed to a magnetic field, presents an energy ...
Xin Tang, Yoshio Miura, Noriki Terada, Enda Xiao, Shintaro Kobayashi, Allan Döring, Terumasa Tadano, Andres Martin‐Cid, Takuo Ohkochi, Shogo Kawaguchi, Yoshitaka Matsushita, Tadakatsu Ohkubo, Tetsuya Nakamura, Konstantin Skokov, Oliver Gutfleisch, Kazuhiro Hono, Hossein Sepehri‐Amin   +16 more
wiley   +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, E. W. McDaniel, I. M. Savukov, M. P. Ledbetter, M. V. Romalis, V. M. Acosta, W. A. Gardner   +6 more
core   +1 more source

Adaptive multipole models of optically pumped magnetometer data

Human Brain Mapping
AbstractMultipole expansions have been used extensively in the Magnetoencephalography (MEG) literature for mitigating environmental interference and modelling brain signal. However, their application to Optically Pumped Magnetometer (OPM) data is challenging due to the wide variety of existing OPM sensor and array designs. We therefore explore how such
Tim M. Tierney, Zelekha Seedat, Kelly St Pier, Stephanie Mellor, Gareth R. Barnes   +4 more
openaire   +3 more sources

Noise Reduction and Localization Accuracy in a Mobile Magnetoencephalography System

Sensors
Magnetoencephalography (MEG) non-invasively provides important information about human brain electrophysiology. The growing use of optically pumped magnetometers (OPM) for MEG, as opposed to fixed arrays of cryogenic sensors, has opened the door for ...
Timothy Bardouille, Vanessa Smith, Elias Vajda, Carson Drake Leslie, Niall Holmes   +4 more
doaj   +1 more source

Dynamic effects in nonlinear magneto-optics of atoms and molecules

, 2004
A brief review is given of topics relating to dynamical processes arising in nonlinear interactions between light and resonant systems (atoms or molecules) in the presence of a magnetic field.Comment: 15 pages, 11 ...
Aleksandrov, Aleksandrov, Aleksandrov, Aleksandrov, Aleksandrov, Andreeva, Auzinsh, Auzinsh, Auzinsh, Auzinsh, Auzinsh, Auzinsh, Auzinsh, Auzinsh, Auzinsh, Auzinsh, Bell, Bell, Blushs, Budker, Budker, Budker, Budker, Cheron, Cheron, Cohen-Tannoudji, Cohen-Tannoudji, Cohen-Tannoudji, Derek F. Kimball, Dmitry Budker, Dodd, Ducloy, Dupont-Roc, Dyakonov, Evgeniy B. Alexandrov, Failache, Ferber, Geremia, Gilles, Hack, Hahn, Jacobs, Kawall, Lange, Lobodzin´ski, Lobodzin´ski, Majumder, Malakyan, Marcis Auzinsh, Martinelli, Matsko, Nasyrov, Nasyrov, Nguyen, Novikov, Okunevich, Okunevich, Regan, Rochester, Rochester, Romalis, Simon M. Rochester, Suter, Suter, Valeriy V. Yashchuk, Wallenstein, Xu, Xu, Yashchuk   +68 more
core   +1 more source

Numerical analysis of the optical pumping process coupled with 23Na D2 manifold modeled as a partially resolved hyperfine structure

AIP Advances, 2020
All magnetometers using alkali atoms rely on the monochromatic light driving the optical pumping process in the D1 or D2 line to create spin-polarized atoms.
Xiaoxu Zhang, Xingqiao Ma, Yiping Chen, Qiongying Ren, Hua Zhao   +4 more
doaj   +1 more source

Superconducting Quantum Magnetometers for Brain Investigations

Sensors
This review article aims to provide an overview of superconducting magnetic quantum sensors and their applications in the biomedical field, particularly in the neurological field.
Carmela Bonavolontà, Antonio Vettoliere, Pierpaolo Sorrentino, Carmine Granata   +3 more
doaj   +1 more source

A high-sensitivity laser-pumped Mx magnetometer [PDF]

, 2018
.: We discuss the design and performance of a laser-pumped cesium vapor magnetometer in the Mx configuration. The device will be employed in the control and stabilization of fluctuating magnetic fields and gradients in a new experiment searching for a ...
Bison, G., Groeger, S., Schenker, J.-L, Weis, A., Wynands, R.   +4 more
core  

Bedside Magnetocardiography with a Scalar Sensor Array

Sensors
Decades of research have shown that magnetocardiography (MCG) has the potential to improve cardiac care decisions. However, sensor and system limitations have prevented its widespread adoption in clinical practice. We report an MCG system built around an
Geoffrey Z. Iwata, Christian T. Nguyen, Kevin Tharratt, Maximilian Ruf, Tucker Reinhardt, Jordan Crivelli-Decker, Madelaine S. Z. Liddy, Alison E. Rugar, Frances Lu, Kirstin Aschbacher, Ethan J. Pratt, Kit Yee Au-Yeung, Stefan Bogdanovic   +12 more
doaj   +1 more source

Stroboscopic microwave spectroscopy of Voigt-based optically pumped magnetometers

Physical Review A
We present results of stroboscopic microwave spectroscopy of radio-frequency dressed optically pumped magnetometer. Interaction between radio-frequency dressed atoms and a synchronously pulsed microwave field followed by Voigt effect-based optical probing allows us to perform partial state tomography and assess the efficiency of the state preparation ...
Hans Marin Florez, Tadas Pyragius, Thomas Fernholz   +2 more
openaire   +2 more sources