Electroformation of Janus and patchy capsules.
Janus and patchy particles have designed heterogeneous surfaces that consist of two or several patches with different materials properties. These particles are emerging as building blocks for a new class of soft matter and functional materials. Here we introduce a route for forming heterogeneous capsules by producing highly ordered jammed colloidal shells of various shapes with domains of controlled size and composition. These structures combine the functionalities offered by Janus or patchy particles, and those given by permeable shells such as colloidosomes. The simple assembly route involves the synergetic action of electro-hydrodynamic flow and electro-coalescence. We demonstrate that the method is robust and straightforwardly extendable to production of multi-patchy capsules. This forms a starting point for producing patchy colloidosomes with domains of anisotropic chemical surface properties, permeability or mixed liquid-solid phase domains, which could be exploited to produce functional emulsions, light and hollow supra-colloidosome structures, or scaffolds.
1] Department of Physics, Norwegian University of Science and Technology, Hoegskoleringen 5, N-7491 Trondheim, Norway [2] Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
Zbigniew
Z
Rozynek
Department of Physics, Norwegian University of Science and Technology, Hoegskoleringen 5, N-7491 Trondheim, Norway.
Alexander
A
Mikkelsen
1] Matière et Systèmes Complexes, Université Paris 7 Diderot, 10, rue Alice Domon et Léonie Duquet, F-75205 Paris, France [2] Centre for Advanced Study, Norwegian Academy of Science and Letters, Drammensvegen 78, N-0271 Oslo, Norway.
Paul
P
Dommersnes
1] Department of Physics, Norwegian University of Science and Technology, Hoegskoleringen 5, N-7491 Trondheim, Norway [2] Centre for Advanced Study, Norwegian Academy of Science and Letters, Drammensvegen 78, N-0271 Oslo, Norway.
Jon Otto
JO
Fossum