Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2001-10-12
J. Phys.: Condens. Matter 13 (2001), 10371-10382
Physics
Condensed Matter
Soft Condensed Matter
to be published in J. Physics Condensed Matter (http://www.iop.org/Journals/JPhysCM)
Scientific paper
10.1088/0953-8984/13/46/309
We show that the correlated stochastic fluctuation of the friction coefficient can give rise to long-range directional motion of a particle undergoing Brownian random walk in a constant periodic energy potential landscape. The occurrence of this motion requires the presence of two additional independent bodies interacting with the particle via friction and via the energy potential, respectively, which can move relative to each other. Such three-body system generalizes the classical Brownian ratchet mechanism, which requires only two interacting bodies. In particular, we describe a simple two-level model of fluctuating-friction molecular motor that can be solved analytically. In our previous work [M.K., L.M and D.P. 2000 J. Nonlinear Opt. Phys. Mater. vol. 9, 157] this model has been first applied to understanding the fundamental mechanism of the photoinduced reorientation of dye-doped liquid crystals. Applications of the same idea to other fields such as molecular biology and nanotechnology can however be envisioned. As an example, in this paper we work out a model of the actomyosin system based on the fluctuating-friction mechanism.
Kreuzer Markus
Marrucci Lorenzo
Paparo Domenico
No associations
LandOfFree
Fluctuating-friction molecular motors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Fluctuating-friction molecular motors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluctuating-friction molecular motors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-327757