Journal
ADVANCED SCIENCE
Volume 5, Issue 9, Pages -Publisher
WILEY
DOI: 10.1002/advs.201800028
Keywords
active self-assembly; collective motor dynamics; controlled motions of motors along prescribed paths; far-from-equilibrium active chemical media
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Funding
- Natural Science Foundation of Zhejiang Province [LR17A050001]
- National Natural Science Foundation of China [11674080]
- Natural Sciences and Engineering Research Council of Canada
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Very small synthetic motors that use chemical reactions to drive their motion are being studied widely because of their potential applications, which often involve active transport and dynamics on nanoscales. Like biological molecular machines, they must be able to perform their tasks in complex, highly fluctuating environments that can form chemical patterns with diverse structures. Motors in such systems can actively assemble into dynamic clusters and other unique nonequilibrium states. It is shown how chemical patterns with small characteristic dimensions may be utilized to suppress rotational Brownian motions of motors and guide them to move along prescribed paths, properties that can be exploited in applications. In systems with larger pattern length scales, domains can serve as catch basins for motors through chemotactic effects. The resulting collective motor dynamics in such confining domains can be used to explore new aspects of active particle collective dynamics or promote specific types of active self-assembly. More generally, when chemically self-propelled motors operate in far-from-equilibrium active chemical media the variety of possible phenomena and the scope of their potential applications are substantially increased.
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