Results 1 to 10 of about 222 (106)

A new wearable multichannel magnetocardiogram system with a SERF atomic magnetometer array [PDF]

Scientific Reports, 2021
In this study, a wearable multichannel human magnetocardiogram (MCG) system based on a spin exchange relaxation-free regime (SERF) magnetometer array is developed.
Yanfei Yang, Mingzhu Xu, Aimin Liang, Yan Yin, Xin Ma, Yang Gao, Xiaolin Ning   +6 more
doaj   +2 more sources

Ultrasensitive SERF atomic magnetometer with a miniaturized hybrid vapor cell [PDF]

Microsystems & Nanoengineering
The chip-scale hybrid optical pumping spin-exchange relaxation-free (SERF) atomic magnetometer with a single-beam arrangement has prominent applications in biomagnetic measurements because of its outstanding features, including ultrahigh sensitivity, an ...
Yintao Ma, Yao Chen, Mingzhi Yu, Yanbin Wang, Shun Lu, Ju Guo, Guoxi Luo, Libo Zhao, Ping Yang, Qijing Lin, Zhuangde Jiang   +10 more
doaj   +2 more sources

Suppression of thermal coupling noise in the SERF atomic co-magnetometer

Results in Physics, 2023
Heating the alkali metal vapor cell to obtain high atomic density is a prerequisite for realizing the high-precision measurement for spin-exchange relaxation-free (SERF) co-magnetometer.
Jiasen Ruan, Lihong Duan, Yang Fu, Lv Yang, Wenfeng Fan, Xinxiu Zhou, Wei Quan   +6 more
doaj   +3 more sources

Sub‐Ensemble Isolation in SERF Magnetometry Enabled by Micrometer‐Scale Polarization Control [PDF]

Nanophotonics
Inter‐channel crosstalk caused by atomic diffusion fundamentally limits the spatial resolution of single‐cell multi‐channel SERF magnetometers. In this work, a spatial‐variant polarization metasurface is employed to achieve effective sub‐ensemble isolation within a single SERF atomic ensemble, which enables the suppression of inter‐channel crosstalk ...
Zhang Y, Liang Z, Liu L, Hu J, Zhou P, Hu G, Hou G, Ye M.   +7 more
europepmc   +2 more sources

Femtotesla atomic magnetometer for zero- and ultralow-field nuclear magnetic resonance [PDF]

Magnetic Resonance Letters
Zero- and ultralow-field nuclear magnetic resonance (ZULF NMR) has experienced rapid development and provides an excellent tool for diverse research fields ranging from materials science and quantum information processing to fundamental physics.
Taizhou Hong, Yuanhong Wang, Zhenhan Shao, Qing Li, Min Jiang, Xinhua Peng   +5 more
doaj   +2 more sources

An FSM-Assisted High-Accuracy Autonomous Magnetic Compensation Optimization Method for Dual-Channel SERF Magnetometers Used in Weak Biomagnetic Signal Measurement [PDF]

Sensors
Atomic magnetometers based on the spin-exchange relaxation-free (SERF) regime have broad applications in bio-magnetic measurement due to their high sensitivity and miniaturized size.
Xinran Tian, Bo Bao, Ridong Wang, Dachao Li   +3 more
doaj   +2 more sources

Fe-Based Nanocrystalline Magnetic Shielding Cylinder with Subfemtotesla-Level Magnetic Noise. [PDF]

Adv Sci (Weinh)
Shields with low magnetic noise are achieved by integrating Fe‐based nanocrystalline magnetic shielding cylinders into shielding systems based on μ‐metal. Benefiting from high permeability and low loss factor, Fe‐based nanocrystalline magnetic shielding cylinders effectively suppress magnetic noise. Notably, the magnetic shielding cylinder with the ten‐
Shen P, Ma D, Wang K, Li S, Gao Y, Wang P, Yuan F, Chen H, Wang Z, Liu Z, Xie M, Li B, Zhou H, Sun B.   +13 more
europepmc   +2 more sources

Fiber-Coupled Fully Integrated Spin-Exchange Relaxation-Free Atomic Magnetometer for Functional Biomagnetic Measurements [PDF]

Sensors
The atomic magnetometer (AM), operating within the spin-exchange relaxation-free (SERF) regime, boasts numerous advantageous qualities, including ultrahigh sensitivity, exceptional spatial resolution, and minimal power consumption.
Wennuo Jiang, Jianjun Li, Xinkun Li, Yuanxing Liu   +3 more
doaj   +2 more sources

Performance Characterization and Optimization of a Miniaturized SERF Atomic Magnetometer via Tunable Laser Power [PDF]

Sensors
Spin-exchange relaxation-free (SERF) atomic magnetometers have emerged as highly promising candidates for ultra-weak magnetic field detection, particularly in biomagnetic imaging, owing to their exceptional sensitivity, amenability to miniaturization ...
Peng Shi, Chen Zuo, Qisong Li, Shulin Zhang   +3 more
doaj   +2 more sources

Suppression Method of AC-Stark Shift in SERF Atomic Magnetometer

IEEE Photonics Journal, 2018
In a spin-exchange-relaxation-free (SERF) atomic magnetometer with ultrahigh sensitivity, the ac-Stark shift generated by circularly polarized light results in the attenuation of the SERF atomic magnetometer response, and the virtual magnetic field ...
Yang Li, Ming Ding, Xuejing Liu, Hongwei Cai, Junpeng Zhao, Jiancheng Fang   +5 more
doaj   +3 more sources