期刊
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
卷 359, 期 -, 页码 129-161出版社
ELSEVIER
DOI: 10.1016/j.physa.2005.05.097
关键词
charge transport; one-dimensional Coulomb gas; ion channel; nanopore; activation barrier
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. (c) 2005 Elsevier B.V. All rights reserved.
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