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Translocation of magnetic beads using patterned magnetic pathways for biosensing applications
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10.1063/1.3073965
/content/aip/journal/jap/105/7/10.1063/1.3073965
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/7/10.1063/1.3073965
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Fabrication process for patterned system pathways.

Image of FIG. 2.
FIG. 2.

Experimental setup for bead placement, rotating external magnetic field, (a) fluid cell containing the patterned sample, and (b) optical microscope connected to CCD camera to study the magnetic bead movement.

Image of FIG. 3.
FIG. 3.

Hysteresis loops of NiFe patterns before liftoff and magnetic beads dried on the Si substrate.

Image of FIG. 4.
FIG. 4.

Magnetization directions of the ellipses with external magnetic field rotation.

Image of FIG. 5.
FIG. 5.

Optical images of the patterned pathways connected to the model sensor surface, (a) and b) show beads on the pathways approach to sensor surface when the external field rotates in the clockwise direction, (c) shows the beads are at the sensor surface when there is no external rotating field, and (d)–(f) show the beads are moving away from the sensor surface when the external rotating field is in the counterclockwise direction.

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/content/aip/journal/jap/105/7/10.1063/1.3073965
2009-03-17
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Translocation of magnetic beads using patterned magnetic pathways for biosensing applications
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/7/10.1063/1.3073965
10.1063/1.3073965
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