Enhanced magnetic field concentration using windmill-like ferromagnets

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F24%3APU151589" target="_blank" >RIV/00216305:26620/24:PU151589 - isvavai.cz</a>
Result on the web
<a href="https://pubs.aip.org/aip/apm/article/12/2/021123/3266669/Enhanced-magnetic-field-concentration-using" target="_blank" >https://pubs.aip.org/aip/apm/article/12/2/021123/3266669/Enhanced-magnetic-field-concentration-using</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0187035" target="_blank" >10.1063/5.0187035</a>

Result language
angličtina
Original language name
Enhanced magnetic field concentration using windmill-like ferromagnets
Original language description
Magnetic sensors are used in many technologies and industries, such as medicine, telecommunications, robotics, the Internet of Things, etc. The sensitivity of these magnetic sensors is a key aspect, as it determines their precision. In this article, we investigate how a thin windmill-like ferromagnetic system can hugely concentrate a magnetic field at its core. A magnetic sensor combined with such a device enhances its sensitivity by a large factor. We describe the different effects that provide this enhancement: the thickness of the device and its unique windmill-like geometry. An expression for the magnetic field in its core is introduced and verified using finite-element calculations. The results show that a high magnetic field concentration is achieved for a low thickness-diameter ratio of the device. Proof-of-concept experiments further demonstrate the significant concentration of the magnetic field when the thickness-diameter ratio is low, reaching levels up to 150 times stronger than the applied field. (c) 2024 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20501 - Materials engineering

Project
<a href="/en/project/TH77010001" target="_blank" >TH77010001: Magnetic Metasurfaces for sustainable Information and Communication technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)