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Title: Driven microswimmers on a 2D substrate: A stochastic towed sled model

We investigate, both numerically and analytically, the diffusion properties of a stochastic sled sliding on a substrate, subject to a constant towing force. The problem is motivated by the growing interest in controlling transport of artificial microswimmers in 2D geometries at low Reynolds numbers. We simulated both symmetric and asymmetric towed sleds. Remarkable properties of their mobilities and diffusion constants include sidewise drifts and excess diffusion peaks. We interpret our numerical findings by making use of stochastic approximation techniques.
Authors:
 [1] ;  [1] ;  [2]
  1. Dipartimento di Fisica, Università di Camerino, I-62032 Camerino (Italy)
  2. (China)
Publication Date:
OSTI Identifier:
22493233
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 143; Journal Issue: 18; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ASYMMETRY; DIFFUSION; MOBILITY; SIMULATION; STOCHASTIC PROCESSES; SUBSTRATES; SYMMETRY