Relationship between the Permeation-Diffusion Parameters of a Single-File Channel

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2012,（1）
• 页码范围: 41-44
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/29/1/010502

摘要

Two sets of widely used parameters can describe the molecular permeation through a nanochannel.One is permeation rate j and its diffusion Dn,and the other is flow and net flux.We establish a relationship between the two sets for a single-file nenochannel,as well as its dependence on the temperature and pressure difference between the two ends of a single-file channel,based on the Brownian motion theories and verified with molecular dynamics simulations for the water diffusion in a transmembrane (6,6) armchair carbon nanotube.Simulation results are in excellent agreement with our predictions.