Results 31 to 40 of about 12,893 (295)

Updating Dynamic Noise Models With Moving Magnetoencephalographic (MEG) Systems

IEEE Access, 2019
Optically pumped magnetometers have opened many possibilities for the study of human brain function using wearable moveable technology. In order to fully exploit this capability, a stable low-field environment at the sensors is required.
Jose David Lopez, Tim M. Tierney, Angela Sucerquia, Felipe Valencia, Niall Holmes, Stephanie Mellor, Gillian Roberts, Ryan M. Hill, Richard Bowtell, Matthew J. Brookes, Gareth R. Barnes   +10 more
doaj   +1 more source

Temperature error of Hall-effect and magnetoresistive commercial magnetometers

Archives of Electrical Engineering, 2017
The paper presents a special measurement system for investigation of temperature influence on the indication of commercially available sensors of the magnetic field.
Nowicki Michał, Kachniarz Maciej, Szewczyk Roman   +2 more
doaj   +1 more source

Sensitivity Improvement via Differential Detection for Frequency-Locking Diamond Magnetometers. [PDF]

Micromachines (Basel)
The magnetic resonance frequency-locking technique is recognized as an effective approach for simultaneously improving the dynamic range, performance stability, and measurement precision of diamond nitrogen vacancy (NV)-center magnetometers. Nevertheless,
Zheng D, Gao J, Li Y, Wang H, Yang Y, Guo H, Wen H, Li Z, Tang J, Ma Z, Liu J.   +10 more
europepmc   +2 more sources

A magneto-mechanical model for rotating-coil magnetometers [PDF]

, 2020
Rotating-coil magnetometers are among the most common transducers for measuring local and integral magnetic fields of accelerator magnets. The measurement uncertainty strongly depends on the mechanical properties of the shafts, bearings, drive systems ...
Braghin, Francesco, Sorti, Stefano, Russenschuck, Stephan, Petrone, Carlo   +3 more
core   +2 more sources

Prospects for atomic magnetometers employing hollow core optical fibre [PDF]

, 2011
Presently, among the most demanding applications for highly sensitive magnetometers are Magnetocardiography (MCG) and Magnetoencephalography (MEG), where sensitivities of around 1pT.Hz^-1/2 and 1fT.Hz^-1/2 are ...
Luiten, A., Luiten, A.N., Ironside, Charlie, Tandoi, G., Ironside, C.N., Seunarine, K.   +5 more
core   +1 more source

Advances in SQUID magnetometers [PDF]

IEEE Transactions on Electron Devices, 1980
The operation and noise limitations of de and RF SQUID's are outlined, and recent advances in their sensitivity are discussed. A model of the dc SQUID predicts an energy noise level per hertz referred to the SQUID of approximately 8 k_{B}TL/R \approx 8 k_{B}T(\piLC)^{1/2} , where L, R, and C are the SQUID inductance and the shunt resistance and ...
openaire   +2 more sources

Inexpensive DIY Magnetometer Designs for Formal and Informal Investigations of Geomagnetic Sq Variations and Space Weather Events

IEEE Access
Simple magnetometers are the gateway instruments for exploring the geomagnetic field that can be used by hobbyists and teachers alike to monitor and study a variety of space weather phenomena.
Sten Odenwald, Hilarie Davis, Christina Milotte, Cris L. DeWolf   +3 more
doaj   +1 more source

Magnetic orientation system based on magnetometer, accelerometer and gyroscope

CAAI Transactions on Intelligence Technology, 2019
Magnetic orientation systems have widely been used by measuring the earth magnetic field and provide a pervasive source of directional information.
Zhiwei Chu, Chilai Chen, Youjiang Liu, Yingxian Wang, Xinhua Lin   +4 more
doaj   +1 more source

NMR Detection with an Atomic Magnetometer [PDF]

Physical Review Letters, 2005
We demonstrate detection of NMR signals using a non-cryogenic atomic magnetometer and describe several novel applications of this technique. A water free induction decay (FID) signal in a 0.5 $μ$T field is detected using a spin-exchange-relaxation-free K magnetometer and the possibility of using a multi-channel magnetometer for 3-D MRI requiring only a
Savukov, I. M., Romalis, M. V.
openaire   +3 more sources

Measuring Magneto-Mechanical Hysteresis during Fatigue Testing using Optically Pumped Magnetometers

, 2021
Magnetic and magneto-mechanical testing are commonly used for qualitative characterization of damage in devices and in large test sites. This presentation reports first results obtained with an optically pumped zero-field magnetometer (OPM) in ...
Koss, Peter A., Kühnemann, Frank, Bertz, Alexander, Blug, Andreas, Straub, Thomas, Laskin, Gennadii, Durmaz, Ali Riza   +6 more
core   +1 more source