The Performance of the Magneto-Impedance Effect for the Detection of Superparamagnetic Particles
dc.contributor.author | García Arribas, Alfredo | |
dc.date.accessioned | 2020-05-05T16:27:25Z | |
dc.date.available | 2020-05-05T16:27:25Z | |
dc.date.issued | 2020-03-31 | |
dc.identifier.citation | Sensors 20(7) : (2020) // Aricle ID 1961 | es_ES |
dc.identifier.issn | 1424-8220 | |
dc.identifier.uri | http://hdl.handle.net/10810/43019 | |
dc.description.abstract | The performance of magneto-impedance sensors to detect the presence and concentration of magnetic nanoparticles is investigated, using finite element calculations to directly solve Maxwell’s equations. In the case of superparamagnetic particles that are not sufficiently magnetized by an external field, it is assumed that the sensitivity of the magneto-impedance sensor to the presence of magnetic nanoparticles comes from the influence of their magnetic permeability on the sensor impedance, and not from the stray magnetic field that the particles produce. The results obtained not only justify this hypothesis, but also provide an explanation for the discrepancies found in the literature about the response of magneto-impedance sensors to the presence of magnetic nanoparticles, where some authors report an increasing magneto-impedance signal when the concentration of magnetic nanoparticles is increased, while others report a decreasing tendency. Additionally, it is demonstrated that sensors with lower magneto-impedance response display larger sensitivities to the presence of magnetic nanoparticles, indicating that the use of plain, nonmagnetic conductors as sensing materials can be beneficial, at least in the case of superparamagnetic particles insufficiently magnetized in an external magnetic field. | es_ES |
dc.description.sponsorship | This work is supported by the Spanish government (Project: MAT2017-83632-C3) and by the Basque government under grants KK-2019/00101 and IT1245-19. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/MAT2017-83632-C3 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | |
dc.subject | magneto-impedance | es_ES |
dc.subject | biosensor | es_ES |
dc.subject | finite-element method | es_ES |
dc.title | The Performance of the Magneto-Impedance Effect for the Detection of Superparamagnetic Particles | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.date.updated | 2020-04-15T13:19:36Z | |
dc.rights.holder | © 2020 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | es_ES |
dc.relation.publisherversion | https://www.mdpi.com/1424-8220/20/7/1961 | es_ES |
dc.identifier.doi | 10.3390/s20071961 | |
dc.departamentoes | Electricidad y electrónica | |
dc.departamentoeu | Elektrizitatea eta elektronika |
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Except where otherwise noted, this item's license is described as © 2020 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).