Dynamic self-assembly of microscale rotors and swimmers.


Type
Article
Change log
Authors
Davies Wykes, Megan S 
Palacci, Jérémie 
Adachi, Takuji 
Ristroph, Leif 
Zhong, Xiao 
Abstract

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.

Description
Keywords
Kinetics, Movement, Rotation
Journal Title
Soft Matter
Conference Name
Journal ISSN
1744-683X
1744-6848
Volume Title
12
Publisher
Royal Society of Chemistry (RSC)