Enhanced magneto-optical activity of multilayer thin films: a novel platform for magnetic nanoparticle sensing

Davut C., Deger C., Yildiz F.

MEASUREMENT SCIENCE AND TECHNOLOGY, cilt.31, sa.1, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 31 Sayı: 1
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1088/1361-6501/ab2a4c
  • Dergi Adı: MEASUREMENT SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Analytical Abstracts, Applied Science & Technology Source, Chemical Abstracts Core, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Marmara Üniversitesi Adresli: Evet

Özet

In this study, we present a novel platform based on the measurement of magneto-optic Kerr effect of a magnetic multilayer thin film sensor with perpendicular magnetic anisotropy, to achieve the quantitative analysis of magnetic nanoparticles (MNPs). Microliter droplets include a varied amount of MNPs located on the sensor surface to perform a systematic investigation of sensing mechanisms. The interaction between the sensor and MNPs, which must be well understood to enhance the sensitivity, is investigated through experiments and micromagnetic simulations. The simulations, in accordance with the experiments, allow us to extract the detection limit of our sensor. We anticipate that our study provides a rational basis for highly sensitive, single-use and precise sensing of MNPs, and will influence future discussions on MNP-magnetic thin film interactions.