Results 41 to 50 of about 21,918 (260)

I-DWRL: Improved Dual Wireless Radio Localization Using Magnetometer

Sensors, 2017
In the dual wireless radio localization (DWRL) technique each sensor node is equipped with two ultra-wide band (UWB) radios; the distance between the two radios is a few tens of centimeters.
Abdul Aziz, Ramesh Kumar, Inwhee Joe
doaj   +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

Development of a Three‐Axis Planar Hall Magnetoresistance Sensor Using a Superparamagnetic Nanoparticle‐Based Flux Guide

Advanced Functional Materials, EarlyView.
A printed superparamagnetic nanoparticle‐based flux guide enables the realization of a hysteresis‐free three‐axis magnetic sensor. This innovative architecture efficiently redirects out‐of‐plane fields to planar sensing elements, facilitating simultaneous vector detection without complex reset protocols.
Changyeop Jeon, Mijin Kim, Keonmok Kim, Byeonghwa Lim, Bibhutibhusan Nayak, Youngdo Jung, Bo‐Yeon Lee, Taehyeong Jeon, Jinwoo Kim, Sunjong Oh, CheolGi Kim   +10 more
wiley   +1 more source

ON THE FIRST RESULTS OF MEASUREMENTS OF GEOMAGNETIC SHORT-PERIOD FIELD VARIATIONS IN THE ODESA MAGNETIC ANOMALY ZONE WITH A SECOND-LONG RESOLUTION

Radio Physics and Radio Astronomy, 2018
Purpose: Since November 2017 till April 2018, the variation of geomagnetic field component was monitored at the Astronomical Observatory of the I. I.
A. L. Sukharev, M. I. Orlyuk, M. I. Ryabov, A. A. Romenets   +3 more
doaj   +1 more source

Will we find Martian lightning via Schumann resonances?

Frontiers in Astronomy and Space Sciences, 2023
Schumann resonances are electromagnetic resonances generally associated with lightning. If they exist on Mars, Schumann resonances are expected to resonate within the ionospheric cavity at a fundamental frequency of 7–14 Hz.
T. M. Esman, J. R. Espley, J. R. Gruesbeck, A. Verbiscer, J. Giacalone, A. J. Halford   +5 more
doaj   +1 more source

Thermally Robust Spin–Orbit Torque Switching in Low‐Resistivity Mo‐Alloyed β‐W Heterostructures

Advanced Functional Materials, EarlyView.
Mo‐alloyed β‐W heterostructures exhibit enhanced spin‐orbit torque efficiency, reduced resistivity and switching current density, and reliable operation from −50 to +150°C. The optimized W87.3Mo12.7 device achieves high spin Hall conductivity with thermal robustness, highlighting its potential for energy‐efficient magnetic memory and automotive ...
Han Seok Ko, Hyun Ju Lee, Jeong Kyu Lee, Han Sol Kim, Min Seok Kim, Quynh Anh T. Nguyen, Sonny H. Rhim, Young Keun Kim   +7 more
wiley   +1 more source

Enhancing Magnetic Field Analysis on the KMAG Instrument: Applying WAIC‐UP for Spacecraft Interference Removal and Interpolating Data Gaps

Earth and Space Science
The Korea Pathfinder Lunar Orbiter (KPLO) spacecraft utilizes the KPLO Magnetometer (KMAG) payload, a three‐fluxgate magnetometer array mounted on a 1.2 m boom, to measure crustal and induced lunar magnetic fields.
Alex P. Hoffmann, Hyeonhu Park, Wooin Jo, Ho Jin, Mark B. Moldwin, Eftyhia Zesta, Ian Garrick‐Bethell   +6 more
doaj   +1 more source

Multi-Parameter Optimization of Rubidium Laser Optically Pumped Magnetometers with Geomagnetic Field Intensity

Sensors, 2023
Rubidium laser optically pumped magnetometers (OPMs) are widely used magnetic sensors based on the Zeeman effect, laser pumping, and magnetic resonance principles. They measure the magnetic field by measuring the magnetic resonance signal passing through
Kun Xu, Xiuyan Ren, Yujie Xiang, Mingxu Zhang, Xiang Zhao, Kexin Ma, Yaqi Tian, Dan Wu, Ziqiang Zeng, Guobao Wang   +9 more
doaj   +1 more source

Nanodiamond Sensing in Dynamic Environments With Fast‐Tracking Through Four‐Point Positioning

Advanced Functional Materials, EarlyView.
A four‐point positioning tracking (4PPT) platform enables fast 3D feedback translational tracking of fluorescent nanodiamonds while simultaneously recording ODMR spectra. By integrating real‐time translational tracking with quantum sensing, mobile nanodiamonds are used for in‐situ nanothermometry, nanorheometry, and 6D translation–rotation tracking in ...
Guoli Zhu, Ming‐Zhong Ai, Zhi‐Yu Zhao, Weng‐Hang Leong, Shi‐Ning Chen, Xi Liu, Jing‐Wei Fan, Xi Feng, Ren‐Bao Liu, Yue Cui, Quan Li   +10 more
wiley   +1 more source

Spin Dynamics in the van der Waals Ferromagnet CrTe2 Engineered by Niobium Doping

Advanced Functional Materials, EarlyView.
Spin‐dynamic magnetic properties of van der Waals (vdW) ferromagnet 1T‐CrTe2 are tuned via niobium (Nb) as Cr1‐xNbxTe2 (x = 0–0.2). Nb doping enables wide‐band tuning of the resonance frequency from 40 GHz down to the few‐GHz regime, accompanied by a moderate increase in the Gilbert damping from ∼0.066 to ∼0.14.
Dhan Raj Lawati, Prem Bahadur Karki, Jitender Kumar, Karishma Prasad, Mohamed A. Elekhtiar, Kai Huang, Bibek Tiwari, Suvechhya Lamichhane, Rupak Timalsina, Zane Hubble, Ayodimeji E. Aregbesola, John Watt, Sy‐Hwang Liou, Evgeny Y. Tsymbal, Jian Wang, Kapildeb Ambal, Abdelghani Laraoui   +16 more
wiley   +1 more source