Confined Catalytic Janus Swimmers in a Crowded Channel: Geometry-Driven Rectification Transients and Directional Locking
Yu H, Kopach A, Misko VR, Vasylenko AA, Makarov D, Marchesoni F, Nori F, Baraban L, Cuniberti G (2016)
Publication Type: Journal article
Publication year: 2016
Journal
Book Volume: 12
Pages Range: 5882-5890
Journal Issue: 42
Abstract
Self-propelled Janus particles, acting as microscopic vehicles, have the potential to perform complex tasks on a microscopic scale, suitable, e.g., for environmental applications, on-chip chemical information processing, or in vivo drug delivery. Development of these smart nanodevices requires a better understanding of how synthetic swimmers move in crowded and confined environments that mimic actual biosystems, e.g., network of blood vessels. Here, the dynamics of self-propelled Janus particles interacting with catalytically passive silica beads in a narrow channel is studied both experimentally and through numerical simulations. Upon varying the area density of the silica beads and the width of the channel, active transport reveals a number of intriguing properties, which range from distinct bulk and boundary-free diffusivity at low densities, to directional “locking” and channel “unclogging” at higher densities, whereby a Janus swimmer is capable of transporting large clusters of passive particles.
Involved external institutions
Technische Universität Dresden
Germany (DE)
Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
Germany (DE)
Riken Institute of Physical and Chemical Research / 理化学研究所
Japan (JP)
University of Antwerp / Universiteit Antwerpen
Belgium (BE)
Germany (DE)
Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
Germany (DE)
Riken Institute of Physical and Chemical Research / 理化学研究所
Japan (JP)
University of Antwerp / Universiteit Antwerpen
Belgium (BE)
How to cite
APA:
Yu, H., Kopach, A., Misko, V.R., Vasylenko, A.A., Makarov, D., Marchesoni, F.,... Cuniberti, G. (2016). Confined Catalytic Janus Swimmers in a Crowded Channel: Geometry-Driven Rectification Transients and Directional Locking. Small, 12(42), 5882-5890. https://doi.org/10.1002/smll.201602039
MLA:
Yu, Hailing, et al. "Confined Catalytic Janus Swimmers in a Crowded Channel: Geometry-Driven Rectification Transients and Directional Locking." Small 12.42 (2016): 5882-5890.
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