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Active particles in complex and crowded environments

Forskningsöversiktsartikel
Författare Clemens Bechinger
Hartmut Löwen
Roberto Di Leonardo
Charles Reichhardt
Giorgio Volpe
Giovanni Volpe
Publicerad i Reviews of Modern Physics
Volym 88
ISSN 0034-6861
Publiceringsår 2016
Publicerad vid Institutionen för fysik (GU)
Språk en
Länkar https://doi.org/10.1103/RevModPhys....
https://gup.ub.gu.se/file/206628
Ämneskategorier Mesoskopisk fysik, Biologisk fysik, Statistisk fysik, Beräkningsfysik, Biofysik

Sammanfattning

Differently from passive Brownian particles, active particles, also known as self-propelled Brownian particles or microswimmers and nanoswimmers, are capable of taking up energy from their environment and converting it into directed motion. Because of this constant flow of energy, their behavior can be explained and understood only within the framework of nonequilibrium physics. In the biological realm, many cells perform directed motion, for example, as a way to browse for nutrients or to avoid toxins. Inspired by these motile microorganisms, researchers have been developing artificial particles that feature similar swimming behaviors based on different mechanisms. These man-made micromachines and nanomachines hold a great potential as autonomous agents for health care, sustainability, and security applications. With a focus on the basic physical features of the interactions of self-propelled Brownian particles with a crowded and complex environment, this comprehensive review will provide a guided tour through its basic principles, the development of artificial self-propelling microparticles and nanoparticles, and their application to the study of nonequilibrium phenomena, as well as the open challenges that the field is currently facing.

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