Nano-swimmers in biological membranes and propulsion hydrodynamics in two dimensions
- 438 Downloads
Active protein inclusions in biological membranes can represent nano-swimmers and propel themselves in lipid bilayers. A simple model of an active inclusion with three particles (domains) connected by variable elastic links is considered. First, the membrane is modeled as a two-dimensional viscous fluid and propulsion behavior in two dimensions is examined. After that, an example of a microscopic dynamical simulation is presented, where the lipid bilayer structure of the membrane is resolved and the solvent effects are included by multiparticle collision dynamics. Statistical analysis of data reveals ballistic motion of the swimmer, in contrast to the classical diffusion behavior found in the absence of active transitions between the states.
KeywordsRegular Article - Topical issue: Active Matter
- 28.A.S. Mikhailov, D. Meinköhn, Self-motion in physico-chemical systems far from thermal equilibrium, in Stochastic Dynamics, edited by L. Schimansky-Geier, Th. Pöschel, Springer Lect. Notes Phys., Vol. 484 (Springer, Berlin, 1997) pp. 336-345Google Scholar
- 30.B. Alberts, A. Johnson, J. Lewis, M. Raff, K. Roberts, P. Walter, Molecular Biology of the Cell, 4th ed. (Garland, New York, 2002)Google Scholar
- 32.G. Gompper, T. Ihle, D.M. Kroll, R.G. Winkler, Adv. Polym. Sci. 221, 1 (2009)Google Scholar