Results 91 to 100 of about 5,746 (226)

Miniature atomic magnetometer integrated with flux concentrators

, 2009
High permeability magnetic flux concentrators are used to enhance the sensitivity of an atomic magnetometer operating in the spin-exchange relaxation-free regime.
Svenja Knappe (16168496), John Kitching (14387631), Ricardo Jimenez-Martinez (16168493), Vishal Shah (5651), Clark Griffith (4464706)   +4 more
core  

Frequency Response of Optically Pumped Magnetometer with Nonlinear Zeeman Effect

, 2020
Optically pumped alkali atomic magnetometers based on measuring the Zeeman shifts of the atomic energy levels are widely used in many applications because of their low noise and cryogen-free operation.
Rui Zhang, Jingbiao Chen, Teng Wu, Hong Guo, Xiang Peng   +4 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

Human MCG measurements with an ultrasensitive optically-pumped atomic magnetometer [PDF]

, 2011
本文データは学協会の許諾に基づきCiNiiから複製したものである脳磁図(MEG)や心磁図(MCG)等の生体磁気信号計測は, 生体機能の解明や疾患等の診断に用いられる非侵襲的計測・イメージングモダリティの中でも重要な役割を担っている.我々は生体磁気信号計測を目標として超高感度光ポンピング原子磁気センサシステムを開発している.本研究では, ヒトのMCGを計測する上で十分な感度を有したカリウム原子磁気センサを構築しMCG計測を行った.計測信号に対しては, 原子磁気センサの周波数応答を考慮した波形の復元を行った.
鎌田, 啓吾, 小林, 哲生, 伊藤, 陽介   +2 more
core  

Myocardial Ischemia Detection by a Sensitive PumpProbe Atomic Magnetometer: Cardiac Ischemia Detection by Atomic Magnetometers

, 2022
Introduction: Magnetocardiography (MCG) based on optical atomic magnetometers has shown promise for detecting heart diseases accurately. Different methods were introduced to improve the sensitivity of detecting magnetic fields during cardiac activity ...
Khalkhali, Seyed Mohammad Hosein, Tehranchi, Mohammad Mehdi, Ranjbaran , Maliheh, Zamani, Amin, Hamidi, Seyedeh Mehri   +4 more
core  

Atomic Magnetometer Achieves Visual Salience Analysis in Drosophila. [PDF]

Sensors (Basel), 2023
Liu F, Li D, Li Y, Xiang Z, Chen Y, Xu Z, Lin Q, Ruan Y.   +7 more
europepmc   +1 more source

Refined analysis and representation of atomic polarization in NMOR atomic magnetometers

Optics Express
The nonlinear magneto-optical rotation (NMOR) atomic magnetometer is a highly sensitive total-field device with significant applications in fundamental physics, geophysics, and biomedical monitoring. The atomic polarization, which is optically induced through resonant light pumping, plays a pivotal role in determining the sensitivity and stability of ...
Yanchao Chai, Liwei Jiang, Jiali Liu, Mengnan Tian, Xin Zhao, Zhenglong Lu, Zhuo Wang, Xusheng Lei   +7 more
openaire   +2 more sources

Magnetic lipase B from Candida antarctica (CALB) biocatalyst for integrated valorization of tilapia by‐products and biodiesel biorefining

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract The immobilization of lipase B from Candida antarctica (CALB) on an amino‐epoxy functionalized magnetic support (Fe3O4‐PEI‐DGEBA) resulted in a highly stable and efficient biocatalyst for biofuel production from tilapia oil. The synthesized support was characterized using scanning electron microscopy, transmission electron microscopy, X‐ray ...
Rafael Leandro Fernandes Melo, Francisco Simão Neto, Bruno Caio Chaves Fernandes, Paulo Gonçalves de Sousa Junior, Patrick da Silva Sousa, Tiago Melo Freire, Raniere Dantas Valença, Frederico Ribeiro do Carmo, Marcos Reinaldo da Silva, Leonardo Farias Serafim, João Maria Soares, Pierre Basílio Almeida Fechine, José Cleiton Sousa dos Santos   +12 more
wiley   +1 more source

Feedback Methods for Vector Measurements Using an All-Optical Atomic Magnetometer. [PDF]

Sensors (Basel), 2023
Bulatowicz M, Tost J, Walker TG.
europepmc   +1 more source

T½ Tuning in a Synergistic BODIPY‐Tetrazole Fe(II) Spin‐Crossover‐Photoluminescence System via Co‐Ligand Variation

Chemistry – A European Journal, EarlyView.
We report a modular spin crossover‐photoluminescence (SCO‐PL) system: heteroleptic, mononuclear Fe(II) coordination compounds bearing equatorial BODIPY fluorophores that exhibit synergistic PL response upon spin state switching. Exchanging apical nitrile co‐ligands tunes electronic and structural properties, giving precise control over the SCO and PL ...
Martin Huber, Matthias Schöbinger, Berthold Stöger, Michael Reissner, Peter Weinberger   +4 more
wiley   +1 more source