TY - JOUR AB - Biological systems often involve the self-assembly of basic components into complex and functioning structures. Artificial systems that mimic such processes can provide a well-controlled setting to explore the principles involved and also synthesize useful micromachines. Our experiments show that immotile, but active, components self-assemble into two types of structure that exhibit the fundamental forms of motility: translation and rotation. Specifically, micron-scale metallic rods are designed to induce extensile surface flows in the presence of a chemical fuel; these rods interact with each other and pair up to form either a swimmer or a rotor. Such pairs can transition reversibly between these two configurations, leading to kinetics reminiscent of bacterial run-and-tumble motion. AU - Davies Wykes, Megan S. AU - Palacci, Jérémie A AU - Adachi, Takuji AU - Ristroph, Leif AU - Zhong, Xiao AU - Ward, Michael D. AU - Zhang, Jun AU - Shelley, Michael J. ID - 9051 IS - 20 JF - Soft Matter SN - 1744-683X TI - Dynamic self-assembly of microscale rotors and swimmers VL - 12 ER -