title: Fabrication of monodisperse toroidal particles by polymer solidification in microfluidics.
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.
authors.affiliation: School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
authors.forename: Baoguo
authors.initials: B
authors.lastname: Wang
authors.forename: Ho Cheung
authors.initials: HC
authors.lastname: Shum
authors.forename: David A
authors.initials: DA
authors.lastname: Weitz