Highly-sensitive magnetic sensor for detecting magnetic nanoparticles based on magnetic tunnel junctions at a low static field
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jin, Z. | - |
dc.contributor.author | Koo, Thomas Myeongseok | - |
dc.contributor.author | Kim, Myeong Soo | - |
dc.contributor.author | Al-Mahdawi, M. | - |
dc.contributor.author | Oogane, M. | - |
dc.contributor.author | Ando, Y. | - |
dc.contributor.author | Kim, Young Keun | - |
dc.date.accessioned | 2021-08-30T04:30:07Z | - |
dc.date.available | 2021-08-30T04:30:07Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2021-01-01 | - |
dc.identifier.issn | 2158-3226 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/50182 | - |
dc.description.abstract | Magnetic sensors to detect magnetic nanoparticles (MNPs) towards biomedical applications require very high sensitivity at low magnetic fields. Here we report a magnetic sensor consisting of a magnetic tunnel junction (MTJ) with a synthetic antiferromagnetic free layer. This sensor exhibits a low magnetic anisotropy and sensitivities of over 18%/Oe at low fields in the range of 0 to 3 Oe. We employ superparamagnetic MNPs with a large diameter of 200 nm. The sensor's transfer curves show the magnetoresistance (MR) variations as a function of MNP concentration. We demonstrate the detection capability of MNP amounts of below 500 ng and low MNP concentrations of 0.01, 0.1, and 1 mg/ml in solvents. This result suggests that the combination of high-sensitivity TMR sensors and large MNPs has a substantial potential for biomarker detection applications. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER INST PHYSICS | - |
dc.title | Highly-sensitive magnetic sensor for detecting magnetic nanoparticles based on magnetic tunnel junctions at a low static field | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Young Keun | - |
dc.identifier.doi | 10.1063/9.0000189 | - |
dc.identifier.scopusid | 2-s2.0-85100245853 | - |
dc.identifier.wosid | 000630443900008 | - |
dc.identifier.bibliographicCitation | AIP ADVANCES, v.11, no.1 | - |
dc.relation.isPartOf | AIP ADVANCES | - |
dc.citation.title | AIP ADVANCES | - |
dc.citation.volume | 11 | - |
dc.citation.number | 1 | - |
dc.type.rims | ART | - |
dc.type.docType | Article; Proceedings Paper | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.