Janus particles can self-assemble around microfabricated gears in reproducible configurations with a high degree of spatial and orientational order. The final configuration maximizes the torque applied on the rotor leading to a unidirectional and steady rotating motion. The interplay between geometry and dynamical behavior leads to the self-assembly of Janus micromotors starting from randomly distributed particles.
Self-Assembly of Micromachining Systems Powered by Janus Micromotors / Maggi, Claudio; Simmchen, Juliane; Saglimbeni, Filippo; Katuri, Jaideep; Dipalo, Michele; De Angelis, Francesco; Sanchez, Samuel; Di Leonardo, Roberto. - In: SMALL. - ISSN 1613-6810. - 12:4(2016), pp. 446-451. [10.1002/smll.201502391]