Evans B A, Shields A R, Carroll R Lloyd, Washburn S, Falvo M R, Superfine R
The Virtual Lung Project, Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
Nano Lett. 2007 May;7(5):1428-34. doi: 10.1021/nl070190c. Epub 2007 Apr 10.
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.
我们展示了一种用于制造聚二甲基硅氧烷-铁磁流体复合材料的高纵横比悬臂式微纳棒阵列的方法。所制造的棒直径范围为200纳米至1微米，纵横比高达125。我们展示了利用永磁体施加的外部磁场对这些超顺磁棒阵列进行驱动，并将这种驱动与理论能量最小化模型进行了比较。通过这些方法制造的结构可能在微流体、光子学和传感应用中有用。
