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Fabrication of Monodisperse Toroidal Particles by Polymer Solidification in Microfluidics |
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| Authors: | Baoguo Wang Prof Ho Cheung Shum David A Weitz Prof |
| Institution: | 1. School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138 (USA), Fax: (+1)?617‐495‐0426;2. Department of Chemical Engineering, Tsinghua University, Beijing, 100084 (PR China);3. Department of Physics, Harvard University, Cambridge, MA 02138 (USA) |
| Abstract: | Microdoughnuts: Polymer toroidal particles such as the one shown in the left picture have been prepared by a capillary microfluidic technique. Droplets of polymer solution undergo non‐uniform solidification to form the anisotropic polymer particles. By incorporating functional materials inside the polymer network, functional toroidal particles (center and right images) can be tailor‐made for specific applications such as magnetic actuation.  |
| Keywords: | colloids composites emulsions particles polymers |