Magnetically Actuated Nanorod Arrays as Biomimetic Cilia
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- 作者：B. A. Evans ; A. R. Shields ; R. Lloyd Carroll ; S. Washburn ; M. R. Falvo ; R. Superfine
- 刊名：Nano Letters
- 出版年：2007
- 出版时间：May 2007
- 年：2007
- 卷：7
- 期：5
- 页码：1428 - 1434
- 全文大小：516K
- 年卷期：v.7,no.5(May 2007)
- ISSN：1530-6992
文摘
We present a procedure for producing high-aspect-ratio cantilevered micro- and nanorod arrays of a PDMS-ferrofluid composite material. Therods have been produced with diameters ranging from 200 nm to 1 
m and aspect ratios as high as 125. We demonstrate actuation of thesesuperparamagnetic rod arrays with an externally applied magnetic field from a permanent magnet and compare this actuation with a theoreticalenergy-minimization model. The structures produced by these methods may be useful in microfluidics, photonic, and sensing applications.
m and aspect ratios as high as 125. We demonstrate actuation of thesesuperparamagnetic rod arrays with an externally applied magnetic field from a permanent magnet and compare this actuation with a theoreticalenergy-minimization model. The structures produced by these methods may be useful in microfluidics, photonic, and sensing applications.