Abstract
We proposed and developed a novel three-dimensional (3D) microfabrication process to produce magnetitepolymer hybrid microstructures by the combination of two-photon microfabrication and selective electroless plating. In this method, 3D polymeric microstructures composed of two kinds of photopolymers were precisely created by twophoton microfabrication. The polymeric microstructures were additively and selectively magnetized by electroless plating. This selective magnetization process was based on the difference in reactivity between acrylate photopolymer and methacrylate photopolymer. In experiments, we demonstrated that alphabetical letter model composed of acrylate was only coated with magnetite by the selective electroless plating. In addition, we also fabricated a prototype of a magnetically driven microfluidic device, in which a magnetic microrotor was embedded in a microchannel. The 3D microfabrication process based on two-photon microfabrication and selective magnetization is expected to be applied in a wide range of area such as functional lab-on-a-chip devices and biological applications.
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