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Tailoring 3D shapes of polyhedral milliparticles by adjusting orthogonal projection in a microfluidic channel |
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| Authors: | Chenchen Zhou He Jia Shuaishuai Liang Yongjian Li Jiang Li Haosheng Chen |
| Institution: | 1. State Key Laboratory of Tribology, Tsinghua University, Beijing, China
Contribution: ?Investigation (lead), Writing - original draft (lead);2. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing, China Contribution: ?Investigation (equal), Writing - original draft (equal);3. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing, China;4. State Key Laboratory of Tribology, Tsinghua University, Beijing, China Contribution: ?Investigation (supporting), Project administration (supporting);5. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing, China Contribution: Project administration (equal), Writing - review & editing (equal);6. State Key Laboratory of Tribology, Tsinghua University, Beijing, China |
| Abstract: | Polyhedral milliparticles (PMPs) have promising applications in self-assembly, tissue engineering, mechanical engineering, and photonics. The shapes and sizes of the PMPs have great impact on their functions. To date, the reported methods for adjusting the shapes and sizes of PMPs are still limited. Especially, it remains a challenge to fabricate the PMPs with high asymmetry. Here, we present a facile and efficient approach that focuses on the alteration of the relative positions between the microchannel and the UV light to tailor the shaping process of the PMPs. By tuning the rotation angle and translation displacement, a variety of monodisperse PMPs with both centrosymmetric and noncentrosymmetrical structures are synthesized, including tetrahedra, pentahedra, hexahedra, and so forth. Moreover, the polymeric PMPs are loaded with silica nanoparticles and further sintered into silica. The obtained silica PMPs hold great potential for the applications such as machining tools, abrasives, and electronics. |
| Keywords: | 3D shape microfluidics milliparticles polyhedral silica |