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Kim, Jiyun
School of Materials Science and Engineering
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Programming magnetic anisotropy in polymeric microactuators

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Title
Programming magnetic anisotropy in polymeric microactuators
Author
Kim, JiyunChung, Su EunChoi, Sung-EunLee, HowonKim, JunhoiKwon, Sunghoon
Issue Date
2011-10
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE MATERIALS, v.10, no.10, pp.747 - 752
Abstract
Polymeric microcomponents are widely used in microelectro-mechanical systems (MEMS) and lab-on-a-chip devices, but they suffer from the lack of complex motion, effective addressability and precise shape control(1,2). To address these needs, we fabricated polymeric nanocomposite microactuators driven by programmable heterogeneous magnetic anisotropy. Spatially modulated photopatterning(3) 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
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DOI
10.1038/NMAT3090
ISSN
1476-1122
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