Transport in one-dimensional Coulomb gases: From ion channels to nanopores
Abstract
We consider a class of systems where, due to the large mismatch of dielectric constants, the Coulomb interaction is approximately one-dimensional. Examples include ion channels in lipid membranes and water filled nanopores in silicon films. Charge transport across such systems possesses the activation behavior associated with the large electrostatic self-energy of a charge placed inside the channel. We show here that the activation barrier exhibits non-trivial dependence on the salt concentration in the surrounding water solution and on the length and radius of the channel.
- Publication:
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Physica A Statistical Mechanics and its Applications
- Pub Date:
- January 2006
- DOI:
- 10.1016/j.physa.2005.05.097
- arXiv:
- arXiv:cond-mat/0503027
- Bibcode:
- 2006PhyA..359..129K
- Keywords:
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- Condensed Matter - Statistical Mechanics;
- Condensed Matter - Soft Condensed Matter;
- Physics - Biological Physics;
- Quantitative Biology - Cell Behavior
- E-Print:
- New references are have been added and discussed. 18 pages, 8 figures