True Bulk Synthesis of Janus Objects by Bipolar Electrochemistry

Janus particles have different features/chemistry on two opposite sides (see figure). So far, they have been obtained mainly by two-dimensional synthetic methods, which are able to break the symmetry but limit the amount of produced particles. A true bulk approach, based on bipolar electrochemistry, is presented that allows the straightforward synthesis of such asymmetric micro- and nano-objects.