@article {156091, title = {Fabrication of monodisperse toroidal particles by polymer solidification in microfluidics}, journal = {Chemphyschem}, volume = {10}, number = {4}, year = {2009}, pages = {641-645}, 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. }, url = {https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/cphc.200800786}, author = {Wang, Baoguo and Shum, Ho Cheung and Weitz, David A} }