Detection of Magnetic Force Fields at Macroscopic Distances with a Micromechanical Cantilever Oscillator
| Autor: | C. Iacovita, M. Vomir, B. Donnio, J.L. Gallani, M.V. Rastei |
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| Přispěvatelé: | Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Iuliu Hatieganu University of Medicine & Pharmacy, gallani, jl |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Magnetic stray fields
micro-cantilever phase dynamics Metals and Alloys magnetic forces Electrical and Electronic Engineering [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] Condensed Matter Physics Instrumentation sensing [PHYS.COND] Physics [physics]/Condensed Matter [cond-mat] Surfaces Coatings and Films Electronic Optical and Magnetic Materials |
| Zdroj: | Sensors and Actuators A: Physical Sensors and Actuators A: Physical, 2022, ⟨10.1016/j.sna.2022.113537⟩ |
| ISSN: | 0924-4247 1873-3069 |
| DOI: | 10.1016/j.sna.2022.113537⟩ |
| Popis: | International audience; We report a procedure for measuremingt magnetic field gradients generated by a macroscopic coil. A micromechanical cantilever oscillator covered with a magnetic material is used to detect variations of the magnetic force field at distances exceeding several times the coil diameter (4 mm). The detection is based on the phase of the first eigenmode of the cantilever while modulating the magnetic field at low frequencies. The nanoscale oscillation of the cantilever along with the high-quality resonance factor are responsible for a coherent oscillation allowing high sensitivity. A detection sensitivity, under ambient conditions, of the order of 10-13 T/nm 2 is estimated with the help of numerical calculations. The approach is useful for measuring the spatial variation of the magnetic field gradients generated by any source of magnetic field when the magnetic field can be modified at rates below the resonant frequency of the cantilever. These results can be useful for gradient fields monitoring in macro-and micro-scale magnetic resonance imaging, non-contact electric currents identification from stray magnetic fields, electrical power monitoring, 3D-magnetic fields mapping, or miniature orientation devices. |
| Databáze: | OpenAIRE |
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