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Programmable Magnetic Actuation of Biomolecule Carriers Using NiFe Stepping Stones

Title
Programmable Magnetic Actuation of Biomolecule Carriers Using NiFe Stepping Stones
Authors
Lim, Byeong HwaJeong, Ii GyoAnandakumar, S.Kim, K. W.Kim, Cheol Gi
DGIST Authors
Kim, Cheol Gi
Issue Date
2011-12
Citation
Journal of Magnetics, 16(4), 363-367
Type
Article
Article Type
Article
Keywords
magnetic pathwaysmagnetic beadsNiFe ellipse
ISSN
1226-1750
Abstract
We have designed, fabricated and demonstrated a novel micro-system for programmable magnetic actuation using magnetic elliptical pathways on Si substrates. Lithographically patterned soft NiFe ellipses are arranged sequentially perpendicular to each other as stepping stones for the transport of magnetic beads. We have measured the magnetization curve of the ellipsoid (9 μm × 4 μm × 0.1 μm) elements with respect to the long and short axes of the ellipse. We found that the magnetization in the long axis direction is larger than that in the short axis direction for an applied field of ≤ 1,000 Oe, causing a force on carriers that causes them to move from one element to another. We have successfully demonstrated a micro-system for the magnetic actuation of biomolecule carriers of superparamagnetic beads (Dynabead® 2.8 μm) by rotating the external magnetic field. This novel concept of magnetic actuation is useful for future integrated lab-on-a-chip systems for biomolecule manipulation, separation and analysis. © 2011 Journal of Magnetics.
URI
http://hdl.handle.net/20.500.11750/5820
DOI
10.4283/JMAG.2011.16.4.363
Publisher
한국자기학회
Related Researcher
  • Author Kim, CheolGi Lab for NanoBio-MatErials & SpinTronics(nBEST)
  • Research Interests Magnetic Materials and Spintronics; Converging Technology of Nanomaterials and Biomaterials; Bio-NEMS;MEMS
Files:
There are no files associated with this item.
Collection:
Department of Emerging Materials ScienceLab for NanoBio-Materials & SpinTronics(nBEST)1. Journal Articles


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