New Perspective on Planar Inductive Sensors: Radio-Frequency Refractometry for Highly Sensitive Quantification of Magnetic Nanoparticles
dc.contributor.author | Marqués Fernández, José Luis | |
dc.contributor.author | Salvador, María | |
dc.contributor.author | Martínez García, José Carlos | |
dc.contributor.author | Fernández Miaja, Pablo | |
dc.contributor.author | García Arribas, Alfredo | |
dc.contributor.author | Rivas, Montserrat | |
dc.date.accessioned | 2023-03-13T17:13:37Z | |
dc.date.available | 2023-03-13T17:13:37Z | |
dc.date.issued | 2023-02-21 | |
dc.identifier.citation | Sensors 23(5) : (2023) // Article ID 2372 | es_ES |
dc.identifier.issn | 1424-8220 | |
dc.identifier.uri | http://hdl.handle.net/10810/60338 | |
dc.description.abstract | We demonstrate how resonant planar coils may be used as sensors to detect and quantify magnetic nanoparticles reliably. A coil’s resonant frequency depends on the adjacent materials’ magnetic permeability and electric permittivity. A small number of nanoparticles dispersed on a supporting matrix on top of a planar coil circuit may thus be quantified. Such nanoparticle detection has application detection to create new devices to assess biomedicine, food quality assurance, and environmental control challenges. We developed a mathematical model for the inductive sensor response at radio frequencies to obtain the nanoparticles’ mass from the self-resonance frequency of the coil. In the model, the calibration parameters only depend on the refraction index of the material around the coil, not on the separate magnetic permeability and electric permittivity. The model compares favourably with three-dimensional electromagnetic simulations and independent experimental measurements. The sensor can be scaled and automated in portable devices to measure small quantities of nanoparticles at a low cost. The resonant sensor combined with the mathematical model is a significant improvement over simple inductive sensors, which operate at smaller frequencies and do not have the required sensitivity, and oscillator-based inductive sensors, which focus on just magnetic permeability. | es_ES |
dc.description.sponsorship | This work was partially founded by the Ministry of Science and Innovation of the Spanish Government through grant PLEC2022-009490, the University Technological Institute of Asturias (IUTA), under grant SV-22-GIJON-18, and the Government of the Principality of Asturias under projects FICYT/IDI/2021/000100 and FICYT/IDI/2021/000273. M.S. was supported by a “Severo Ochoa” fellowship (Consejería de Educación y Cultura del Gobierno del Principado de Asturias, grant BP19-141) and by the Margarita Salas fellowship financed by the European Union-NextGenerationEU and the Plan for Recovery, Transformation and Resilience. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.relation | info:eu-repo/grantAgreement/MICINN/PLEC2022-009490 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
dc.subject | self-resonant frequency | es_ES |
dc.subject | inductive sensor | es_ES |
dc.subject | coil | es_ES |
dc.subject | nanoparticles | es_ES |
dc.subject | magnetic nanoparticles | es_ES |
dc.subject | magnetic lateral flow immunoassays | es_ES |
dc.subject | impedance | es_ES |
dc.subject | refraction index | es_ES |
dc.subject | magnetic permeability | es_ES |
dc.subject | electric permittivity | es_ES |
dc.title | New Perspective on Planar Inductive Sensors: Radio-Frequency Refractometry for Highly Sensitive Quantification of Magnetic Nanoparticles | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.date.updated | 2023-03-10T14:03:42Z | |
dc.rights.holder | © 2023 by the authors. 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 (https://creativecommons.org/licenses/by/ 4.0/). | es_ES |
dc.relation.publisherversion | https://www.mdpi.com/1424-8220/23/5/2372 | es_ES |
dc.identifier.doi | 10.3390/s23052372 | |
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 © 2023 by the authors. 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 (https://creativecommons.org/licenses/by/ 4.0/).