Controllable high-speed rotation of nanowires

被引：126
|
作者：
Fan, DL [1 ]
Zhu, FQ
Cammarata, RC
Chien, CL
机构：
[1] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA
[2] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
来源：
PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 24期
关键词：
D O I：
10.1103/PhysRevLett.94.247208
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report a versatile method for executing controllable high-speed rotation of nanowires by ac voltages applied to multiple electrodes. The rotation of the nanowires can be instantly switched on or off with precisely controlled rotation speed (to at least 1800 rpm), definite chirality, and total angle of rotation. We have determined the torque due to the fluidic drag force on nanowire of different lengths. We also demonstrate a micromotor using a rotating nanowire driving a dust particle into circular motion. This method has been used to rotate magnetic and nonmagnetic nanowires as well as carbon nanotubes.
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页数：4
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