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Geospace phenomena such as the aurora, plasma motion, ionospheric currents and associated magnetic field disturbances are highly organized by Earth's main magnetic field. This is due to the fact that the charged particles that comprise…

Space Physics · Physics 2016-12-01 K. M. Laundal , A. D. Richmond

In machine learning, classifiers are typically susceptible to noise in the training data. In this work, we aim at reducing intra-class noise with the help of graph filtering to improve the classification performance. Considered graphs are…

Machine Learning · Statistics 2021-01-26 Mounia Hamidouche , Carlos Lassance , Yuqing Hu , Lucas Drumetz , Bastien Pasdeloup , Vincent Gripon

Measuring the magnetic field of permanent magnets can be challenging, but recent research has demonstrated the potential of using deformed diamagnetic liquids to estimate the magnetic field. In this paper, we explore two methods for…

Applied Physics · Physics 2023-08-09 David Shulman

New results are reported of the computer simulations on the magnetic behaviour of magnetic arrays of nanoscopic dots, placed in cells of the square lattice. We show that the remanence magnetization $M_r$ decreases with the array size. For…

Materials Science · Physics 2009-06-20 Przemyslaw Gawronski , Krzysztof Kulakowski

Spectrum cartography constructs maps of metrics such as channel gain or received signal power across a geographic area of interest using spatially distributed sensor measurements. Applications of these maps include network planning,…

Signal Processing · Electrical Eng. & Systems 2019-07-24 Yves Teganya , Daniel Romero , Luis Miguel Lopez Ramos , Baltasar Beferull-Lozano

Magnetometers, gyroscopes and accelerometers are commonly used sensors in a variety of applications. The paper proposes a novel gyroscope calibration method in the homogeneous magnetic field by the help of magnetometer. It is shown that,…

Robotics · Computer Science 2017-07-25 Yuanxin Wu , Ling Pei

Considering the growing interest in magnetic materials for unconventional computing, data storage, and sensor applications, there is active research not only on material synthesis but also characterisation of their properties. In addition…

Since the discovery by Hale in the early 1900s that sunspots harbor strong magnetic field, magnetism has become increasingly important in our understanding of processes on the Sun and in the Heliosphere. Many current and planned instruments…

Solar and Stellar Astrophysics · Physics 2012-07-05 A. G. de Wijn

We present a theoretical analysis of the ability of atomic magnetometers to estimate a fluctuating magnetic field. Our analysis makes use of a Gaussian state description of the atoms and the probing field, and it presents the estimator of…

Quantum Physics · Physics 2009-11-13 Vivi Petersen , Klaus Molmer

The magnetoimpedance effect is a versatile tool to investigate ferromagnetic materials, revealing aspects on the fundamental physics associated to magnetization dynamics, broadband magnetic properties, important issues for current and…

Materials Science · Physics 2015-06-23 M. A. Corrêa , F. Bohn , R. B. da Silva , R. L. Sommer

Magnetic sensing platform techniques have been used in many years in an attempt to better evaluate the likelihood of recoverable hydrocarbon reservoirs by determining the depth and pattern of sedimentary rock formations containing magnetic…

Geophysics · Physics 2021-10-19 Huan Liu , Haobin Dong , Jian Ge , Zheng Liu

Atomic magnetometers are highly sensitive detectors of magnetic fields that monitor the evolution of the macroscopic magnetic moment of atomic vapors, and opening new applications in biological, physical, and chemical science. However, the…

Quantum Physics · Physics 2022-03-01 Min Jiang , Wenjie Xu , Qing Li , Ze Wu , Dieter Suter , Xinhua Peng

A sensitive vector magnetometry with high spatial resolution is important for various practical applications, such as magnetocardiography, magnetoencephalography, explosive materials detection and many others. We propose a magnetometer…

Applied Physics · Physics 2021-07-07 D. O. Ignatyeva , G. A. Knyazev , A. N. Kalish , A. I. Chernov , V. I. Belotelov

Sensitive magnetometers have been applied in a wide range of research fields, including geophysical exploration, bio-magnetic field detection, ultralow-field nuclear magnetic resonance, etc. Commonly, magnetometers are directly placed at…

Objective. The technology employed in magnetic resonance imaging (MRI) systems has evolved continuously, resulting in MRI scanners with stronger static magnetic fields (SMF) B0, faster and stronger gradient magnetic fields, and more…

In this paper, we describe a simple apparatus consisting of a scale, capable of a one milligram resolution, and a commonly obtainable magnet to measure magnetic forces. This simple apparatus is capable of measuring magnetic properties of…

Materials Science · Physics 2014-08-01 Jan A. Makkinje , George O. Zimmerman

The three axis magnetic field measurement based on the interaction of a single elliptically polarized light beam with an atomic system is described. The magnetic field direction dependent atomic responses are extracted by the polarimetric…

Instrumentation and Detectors · Physics 2016-09-21 Swarupananda Pradhan

Magnetic nanoparticles have proven to be valuable for biomedical applications. A prerequisite for the efficiency of these applications are precisely characterized particles. Thermal Noise Magnetrometry (TNM), unlike any other magnetic…

Mesoscale and Nanoscale Physics · Physics 2021-12-23 Katrijn Everaert , Maik Liebl , Dirk Gutkelch , Bartel Van Waeyenberge , Frank Wiekhorst , Jonathan Leliaert

We propose a simple experiment to explore magnetic fields created by electric railways and compare them with a simple model and parameters estimated using easily available information. A pedestrian walking on an overpass above train tracks…

Physics Education · Physics 2020-12-02 Martin Monteiro , Giovanni Organtini , Arturo C. Marti

This paper proposes a high-accuracy radio map construction method tailored for environments where location information is affected by bursty errors. Radio maps are an effective tool for visualizing wireless environments. Although extensive…

Signal Processing · Electrical Eng. & Systems 2025-09-25 Koki Kanzaki , Koya Sato
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