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arXiv · 1707.03630

Self-assembly of micro-machining systems powered by Janus micro-motors

C. Maggi·J. Simmchen·F. Saglimbeni·J Katuri·M. Dipalo·F. De Angelis·S. Sánchez·R. Di Leonardo
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Abstract

Integration of active matter in larger micro-devices can provide an embedded source of propulsion and lead to self-actuated micromachining systems that do not rely on any external power or control apparatus. Here we demonstrate that Janus colloids can self-assemble around micro-fabricated rotors 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. We discuss how the interplay between geometry and dynamical behavior consistently leads to the self-assembly of autonomous micromotors starting from randomly distributed building blocks.

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C. Maggi, J. Simmchen, F. Saglimbeni, J Katuri, M. Dipalo, F. De Angelis, S. Sánchez, R. Di Leonardo. 2017-07-12. Self-assembly of micro-machining systems powered by Janus micro-motors. https://doi.org/10.1002/smll.201502391

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