Magnetically Actuated Nanorod Arrays as Biomimetic Cilia
Nano Letters2007Vol. 7(5), pp. 1428–1434
Citations Over TimeTop 1% of 2007 papers
Abstract
We present a procedure for producing high-aspect-ratio cantilevered micro- and nanorod arrays of a PDMS-ferrofluid composite material. The rods have been produced with diameters ranging from 200 nm to 1 mum and aspect ratios as high as 125. We demonstrate actuation of these superparamagnetic rod arrays with an externally applied magnetic field from a permanent magnet and compare this actuation with a theoretical energy-minimization model. The structures produced by these methods may be useful in microfluidics, photonic, and sensing applications.
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