Nat Mater. 2011 Oct;10(10):747-52. doi: 10.1038/nmat3090.
Polymeric microcomponents are widely used in microelectromechanical systems (MEMS) and lab-on-a-chip devices, but they suffer from the lack of complex motion, effective addressability and precise shape control. To address these needs, we fabricated polymeric nanocomposite microactuators driven by programmable heterogeneous magnetic anisotropy. Spatially modulated photopatterning was applied in a shape-independent manner to microactuator components by successive confinement of self-assembled magnetic nanoparticles in a fixed polymer matrix. By freely programming the rotational axis of each component, we demonstrate that the polymeric microactuators can undergo predesigned, complex two- and three-dimensional motion.
聚合物微组件广泛应用于微机电系统 (MEMS) 和芯片实验室设备，但它们缺乏复杂的运动、有效的可寻址性和精确的形状控制。为了解决这些需求，我们制造了由可编程各向异性磁体驱动的聚合物纳米复合材料微致动器。通过在固定聚合物基质中连续限制自组装磁性纳米粒子，以非依赖于形状的方式将空间调制光图案应用于微致动器组件。通过自由编程每个组件的旋转轴，我们证明聚合物微致动器可以进行预定的复杂二维和三维运动。
