Entropic transport: Kinetics, scaling and control mechanisms
arXiv:cond-mat/0603608 · doi:10.1103/PhysRevLett.96.130603
Abstract
We show that transport in the presence of entropic barriers exhibits peculiar characteristics which makes it distinctly different from that occurring through energy barriers. The constrained dynamics yields a scaling regime for the particle current and the diffusion coefficient in terms of the ratio between the work done to the particles and available thermal energy. This interesting property, genuine to the entropic nature of the barriers, can be utilized to effectively control transport through quasi one-dimensional structures in which irregularities or tortuosity of the boundaries cause entropic effects. The accuracy of the kinetic description has been corroborated by simulations. Applications to different dynamic situations involving entropic barriers are outlined.
4 pages, 5 figures. Accepted for publication in Phys. Rev. Lett
Cited by in corpus (13)
- Artificial Brownian motors: Controlling transport on the nanoscale
- Biased diffusion in confined media: Test of the Fick-Jacobs approximation and validity criteria
- Entropic Stochastic Resonance
- Rectification in synthetic conical nanopores: a one-dimensional Poisson-Nernst-Planck modeling
- Current in a three-dimensional periodic tube with unbiased forces
- Entropic particle transport in periodic channels
- Entropic stochastic resonance: the constructive role of the unevenness
- Weak disorder strongly improves the selective enhancement of diffusion in a tilted periodic potential
- Effects of multiple occupancy and inter-particle interactions on selective transport through narrow channels: theory versus experiment
- Double Entropic Stochastic Resonance
- Entropic transport - A test bed for the Fick-Jacobs approximation
- Thermal noise can facilitate energy transformation in the presence of entropic barriers
- Facilitated movement of inertial Brownian motors driven by a load under an asymmetric potential