Highly responsive core-shell microactuator arrays for use in viscous and viscoelastic fluids
Highly responsive core-shell microactuator arrays for use in viscous and viscoelastic fluids
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DOI：
10.1088/0960-1317/25/2/025004
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发表时间：
2015-02-01
影响因子：
2.3
通讯作者：
Superfine, R.
中科院分区：
文献类型：
--
作者：
Fiser, Briana L.;Shields, Adam R.;Superfine, R.
我们提出了一种新的制造方法来生产高响应性聚合物-金属核壳磁性微致动器阵列。芯-壳制造方法将弹性和磁性结构部件组合在一起，使得可以通过调整芯-壳几何形状来优化致动器响应。我们的微结构是10 μ m长，550 nm的直径，和电化学制造的颗粒轨道蚀刻膜，包括一个聚（二甲基硅氧烷）的核心与100 nm的镍壳周围的上部3-8 μ m。该结构可以在中等磁场下实现近90度的偏转，并且能够在比水粘性高550倍的流体中驱动流体流动。
We present a new fabrication method to produce arrays of highly responsive polymer-metal core-shell magnetic microactuators. The core-shell fabrication method decouples the elastic and magnetic structural components such that the actuator response can be optimized by adjusting the core-shell geometry. Our microstructures are 10 mu m long, 550 nm in diameter, and electrochemically fabricated in particle track-etched membranes, comprising a poly(dimethylsiloxane) core with a 100 nm Ni shell surrounding the upper 3-8 mu m. The structures can achieve deflections of nearly 90 degrees with moderate magnetic fields and are capable of driving fluid flow in a fluid 550 times more viscous than water.