Magnetic trapping and self-assembly of multicomponent nanowires

被引：146

作者：

Tanase, M ^{[1
]}

Silevitch, DM

Hultgren, A

Bauer, LA

Searson, PC

Meyer, GJ

Reich, DH

机构：

[1] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[2] Johns Hopkins Univ, Dept Chem, Baltimore, MD 21218 USA

[3] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2002年 / 91卷 / 10期

关键词：

D O I：

10.1063/1.1452206

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetic nanowires suspended in fluid solutions can be assembled and ordered by taking advantage of their large shape anisotropy. Magnetic manipulation and assembly techniques are demonstrated, using electrodeposited Ni nanowires, with diameter 350 nm and length 12 mum. Orienting suspended nanowires in a small magnetic field Happroximate to10 G promotes self-assembly of continuous chains that can extend over several hundred mum. The dynamics of this process can be described quantitatively in terms of the interplay of magnetic forces and fluid drag at low Reynolds number. In addition, a new technique of magnetic trapping is described, by which a single magnetic nanowire can be captured between lithographically patterned magnetic microelectrodes. The use of three-segment Pt-Ni-Pt nanowires yields low resistance, Ohmic electrical contacts between the nanowires and the electrodes. This technique has potential for use in the fabrication and measurement of nanoscale magnetic devices. (C) 2002 American Institute of Physics.

引用

页码：8549 / 8551

页数：3

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