  Here, we describe a method for the enhanced self-assembly of triblock Janus
colloids targeted to form a kagome lattice. Using computer simulations, we
demonstrate that the formation of this elusive structure can be significantly
improved by self-propelling or activating the colloids along the axis
connecting their hydrophobic hemispheres. The process by which metastable
aggregates are destabilized and transformed into the favored kagome lattice is
quite general, and we argue this active approach provides a systematic pathway
to improving the self-assembly of a large number of colloidal structures.
