Results 51 to 60 of about 202,952 (145)

Heading error compensation of optically pumped magnetometer [PDF]

, 2008
W pracy opisano zasadę działania magnetometru pompowanego optycznie. Opisano zależność dwóch błędów pomiarowych magnetometru od kąta, pomiędzy kierunkiem osi wzdłużnej i poprzecznej czujnika magnetometru a kierunkiem wektora pola magnetycznego Ziemi ...
Wołoszyn, M.
core  

Remote Magnetomechanical Neuromodulation Uncovers Therapeutic Mechanisms for Alleviating Parkinsonian Symptoms in Freely Moving Mice

Advanced Science, EarlyView.
Magnetomechanical neuromodulation using magnetic nanodiscs enables remote activation of neurons. In a hemiparkinsonian mouse model, alternating magnetic fields actuate the nanodiscs to generate torque that opens mechanosensitive ion channels within the subthalamic nucleus, thereby modulating basal ganglia motor circuitry.
Anouk Wolters, Lorenzo Signorelli, Christian Herff, Sophia Gimple, Renzo Riemens, Gunter Kenis, Kim Rijkers, Hamed Shabani, Jyh‐Jang Sun, Yasin Temel, Hans Clusmann, Danijela Gregurec, Sarah‐Anna Hescham   +12 more
wiley   +1 more source

Efficient Cholesteric Liquid Crystal Waveguide Polarizing Splitters for High‐Sensitivity Chip‐Scale Atomic Magnetometry

Advanced Science, EarlyView.
An integrated polarimetry architecture based on a cholesteric liquid crystal waveguide polarization splitter overcomes the volumetric bottleneck in chip‐scale atomic magnetometers. By leveraging Bragg‐selective reflection and total‐internal‐reflection‐induced helicity inversion, this ultrathin device enables efficient circular polarization splitting ...
Zhibo Cui, Chuang Wang, Xiangyang Zhou, Gaopu Hou, Jinsheng Hu, Mao Ye, Xu Xiao, Zhen Chai, Yishi Weng, Yuning Zhang   +9 more
wiley   +1 more source

Observation of Magnetic‐Anisotropy Crossover and High‐Temperature Skyrmions in the Dirac Magnet Fe3Ge with a Distorted Kagome Lattice

Advanced Science, EarlyView.
A temperature‐driven magnetic anisotropy crossover is revealed in the Dirac kagome magnet Fe3Ge with a distorted kagome lattice. The transition from easy‐plane to easy‐axis magnetic anisotropy stabilizes robust Bloch‐type skyrmions over an exceptionally wide temperature window of 375–650 K.
Yalei Huang, Xiaowei Lv, Bin Li, Chunqiang Xu, Dhanarajagopal Alltrin, Xiaoxuan Ma, Wanting Yang, Wei Zhou, Xiangzhuo Xing, Wen‐Chin Lin, Raman Sankar, Michael Smidman, Shixun Cao, Dong Qian, Renchao Che, Xiaofeng Xu   +15 more
wiley   +1 more source

Precision magnetic field modelling and control for wearable magnetoencephalography

NeuroImage, 2021
Optically-pumped magnetometers (OPMs) are highly sensitive, compact magnetic field sensors, which offer a viable alternative to cryogenic sensors (superconducting quantum interference devices – SQUIDs) for magnetoencephalography (MEG).
Molly Rea, Niall Holmes, Ryan M. Hill, Elena Boto, James Leggett, Lucy J. Edwards, David Woolger, Eliot Dawson, Vishal Shah, James Osborne, Richard Bowtell, Matthew J. Brookes   +11 more
doaj   +1 more source

Magnetically Guided Macrophage Immunobots Coordinate Iron‐Metabolic Cascades and Immunogenic Ferroptosis for Tumor Immunotherapy

Advanced Science, EarlyView.
Magnetically guided macrophage immunobots integrate active tumor targeting with immunometabolic therapy. After systemic administration, magnetic actuation enhances immunobot retention and tumor penetration, while LPS‐functionalized FePt microrollers sustain M1‐like polarization through inflammatory and iron‐amplified oxidative signaling and trigger ...
Xirui Zeng, Yingfei Zhang, Chong Wu, Qijia Duan, Mengqi Fan, Kuan Wang, Shirong Cai, Immihan Ceren Yasa   +7 more
wiley   +1 more source

Modelling optically pumped magnetometer interference in MEG as a spatially homogeneous magnetic field

NeuroImage, 2021
Here we propose that much of the magnetic interference observed when using optically pumped magnetometers for MEG experiments can be modeled as a spatially homogeneous magnetic field.
Tim M. Tierney, Nicholas Alexander, Stephanie Mellor, Niall Holmes, Robert Seymour, George C. O'Neill, Eleanor A. Maguire, Gareth R. Barnes   +7 more
doaj   +1 more source

High‐Temperature Magnetic Field Mapping Using a Single‐Crystal Diamond MEMS Resonator Array

Advanced Science, EarlyView.
A single‐crystal diamond MEMS resonator array enables magnetic‐field reconstruction with millisecond response, nanotesla level magnetic noise, and stable operation up to 573 K. Two‐ and three‐dimensional magnetic field mapping are demonstrated using ΔEeffect sensing, highlighting the potential of diamond MEMS technology for hightemperature magnetic ...
Zilong Zhang, Keyun Gu, Satoshi Koizumi, Masaya Toda, Meiyong Liao   +4 more
wiley   +1 more source

Noise Analysis in Pre-Amplifier Circuits Associated to Highly Sensitive Optically-Pumped Magnetometers for Geomagnetic Applications

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, Yuantian Lu, Xin Zhuang, Qunying Zhang, Guangyou Fang   +4 more
doaj   +1 more source

Cr1/4NbSe2‐Single Crystal Growth and Evolution of Antiferromagnetic Correlated States

Advanced Science, EarlyView.
High‐quality single crystals Cr1/4NbSe2 were synthesized and comprehensively characterized for the first time. Advanced structural, electronic, and magnetic measurements uncover a correlated antiferromagnetic state, resolving longstanding inconsistencies regarding magnetic behavior derived from earlier polycrystal studies.
Nour Abdelrahman, Bastian Rubrecht, Matheus Felipe de Souza Barbosa, Mahdi Behnami, Dmitriy Efremov, Daniel Wolf, Martin Valldor, Alexey A. Popov, Stanislav M. Avdoshenko, Marco Naumann, Martin Knupfer, Vladislav Kataev, Alexey Alfonsov, Anja U. B. Wolter, Michael Mertig, Bernd Büchner, Silke Hampel   +16 more
wiley   +1 more source