Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2006-08-16
Journal of Chemical Physics 126:111102 (2007)
Physics
Condensed Matter
Statistical Mechanics
2 figures
Scientific paper
10.1063/1.2711174
The viscous drag on a colloidal particle pulled through solution by an optical trap is large enough that on experimentally relavant time scales the mechanical force exerted by the trap is equal and op- posite the viscous drag force. The rapid mechanical equilibritation allows the system to be modeled using equilibrium theory, where the effects of the energy dissipation (thermodynamic disequilibrium) show up only in the coordinate transformations that map the system from the laboratory frame of reference, relative to which the particle is moving, to a frame of reference in which the particle is, on average, stationary and on which the stochastic dynamics is governed by a canonical equilib- rium distribution function. The simple equations in the stationary frame can be analyzed using the Onsager-Machlup theory for stochastic systems and provide generalizations of equilibrium and near equilibrium concepts such as detailed balance and fluctuation-dissipation relations applicable to a wide range of systems including molecular motors, pumps, and other nano-scale machines.
No associations
LandOfFree
Equilibrium Theory for a Particle Pulled by a Moving Optical Trap 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 Equilibrium Theory for a Particle Pulled by a Moving Optical Trap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Equilibrium Theory for a Particle Pulled by a Moving Optical Trap will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-219832