Noncontact and contact micromanipulation using a rotating nickel nanowire

This paper reports an approach to perform basic noncontact and contact manipulation tasks using rotating nickel nanowires (Ni NWs) driven by a uniform rotating magnetic field. We show that a rotating NW is capable of propulsion near a solid surface by a tumbling motion. The tumbling NW is steered wi...

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Bibliographic Details
Main Authors: Li Zhang, Petit, T, Peyer, K E, Kratochvil, B E, Jiangnan Zhang, Jun Lou, Nelson, B J
Format: Conference Proceeding
Language:English
Subjects:
blood cell
Coils
Fluid flow
Magnetic fields
microbead
microfluidics
micromanipulation
Nickel
nickel nanowire
Perpendicular magnetic anisotropy
Propulsion
uniform rotating magnetic field
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Summary:This paper reports an approach to perform basic noncontact and contact manipulation tasks using rotating nickel nanowires (Ni NWs) driven by a uniform rotating magnetic field. We show that a rotating NW is capable of propulsion near a solid surface by a tumbling motion. The tumbling NW is steered with micrometer positioning precision in 2-D. The FEM simulation shows that fluid flow is induced around the rotating NW, which was applied to manipulate microobjects in a noncontact fashion. Noncontact pushing and pulling tests of individual polystyrene (PS) microbeads are conducted using a tumbling NW. We also show that a rotating Ni NW can act as a microrotor to rotate a microobject on a solid surface. In addition, contact manipulation is demonstrated by transporting individual microobjects, i.e. a PS microbead and a human blood cell, using a rotating NW. The results imply that rotating magnetic NWs are good candidates for handling cellular and sub-cellular objects in an aqueous low Reynolds number environment.
ISSN:2159-6964
DOI:10.1109/NANOMED.2010.5749802