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Characterization of Superparamagnetic Particles Mobility by On-Chip Micromagnets

Title
Characterization of Superparamagnetic Particles Mobility by On-Chip Micromagnets
Author(s)
Goudu, Sandhya RaniHu, XinghaoLim, ByeonghwaKim, KunwooKim, KeonmokKim, HyeonseolYoon, JonghwanKim, CheolGi
DGIST Authors
Goudu, Sandhya RaniHu, XinghaoLim, ByeonghwaKim, KunwooKim, KeonmokKim, HyeonseolYoon, JonghwanKim, CheolGi
Issued Date
2018-06
Type
Article
Article Type
Article; Proceedings Paper
Author Keywords
Micromagnetmicromagnetic simulationsuperparamagnetic (SPM) particlevelocity
Keywords
MANIPULATIONSEPARATIONTRANSPORTDRIVENBEADSCARGOCELLS
ISSN
0018-9464
Abstract
We fabricate on-chip micromagnets using Ni80Fe20 and Co70Fe30 materials for the characterization of mobility of superparamagnetic particles. The maximum velocity of the particles around the periphery of the micromagnets is determined by the critical frequency, which indicates that the particle enters the phase-slipping regime from the phase-locked regime. The maximum velocity of NiFe micromagnets is approximately 3 times larger than that of CoFe micromagnets measured at the low field regions. Moreover, the maximum velocity of the particles is decreasing with increasing the thickness of Teflon coating on the micromagnets, which is in a good agreement with the variation of the magnetostatic potential energy evaluated numerically from micromagnetic simulations. © 2018 IEEE.
URI
http://hdl.handle.net/20.500.11750/6591
DOI
10.1109/TMAG.2018.2814819
Publisher
Institute of Electrical and Electronics Engineers Inc.
Related Researcher
  • 김철기 Kim, CheolGi
  • Research Interests Magnetic Materials and Spintronics; Converging Technology of Nanomaterials and Biomaterials; Bio-NEMS;MEMS
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Appears in Collections:
Department of Physics and Chemistry Lab for NanoBio-Materials & SpinTronics(nBEST) 1. Journal Articles

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