On the validity of continuous modelling of ion transport through nanochannels

被引:52
作者
Fulinski, A
Kosinska, ID
Siwy, Z
机构
[1] Jagiellonian Univ, M Smoluchowski Inst Phys, PL-30059 Krakow, Poland
[2] Gesell Schwerionenforsch GSI, D-64291 Darmstadt, Germany
[3] Silesian Tech Univ, PL-44100 Gliwice, Poland
来源
EUROPHYSICS LETTERS | 2004年 / 67卷 / 04期
关键词
D O I
10.1209/epl/i2003-10304-y
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Ion transport through nanopores is modelled by the Smoluchowski equation. The model, based on properties of a bulk electrolyte solution and containing no adjustable parameters, is compared with ion current data recorded for single cylindrical nanopores in polymeric films. It predicts qualitatively a possibility of constructing an ion current rectifier based on the symmetric nanopore with asymmetric charge distribution. Our experimental data., however, indicate that the bulk-type diffusion approach does not describe the surface current., which gives a significant contribution to the total ion current through nanopores.
引用
收藏
页码:683 / 689
页数:7
相关论文
共 28 条
[1]   COUNTING POLYMERS MOVING THROUGH A SINGLE-ION CHANNEL [J].
BEZRUKOV, SM ;
VODYANOY, I ;
PARSEGIAN, VA .
NATURE, 1994, 370 (6487) :279-281
[2]   Ion transport in nanofluidic channels [J].
Daiguji, H ;
Yang, PD ;
Majumdar, A .
NANO LETTERS, 2004, 4 (01) :137-142
[3]  
Fleischer R. L., 1975, Nuclear tracks in solids: Principles and applications
[4]   Water conduction through the hydrophobic channel of a carbon nanotube [J].
Hummer, G ;
Rasaiah, JC ;
Noworyta, JP .
NATURE, 2001, 414 (6860) :188-190
[5]   Characterization of individual polynucleotide molecules using a membrane channel [J].
Kasianowicz, JJ ;
Brandin, E ;
Branton, D ;
Deamer, DW .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1996, 93 (24) :13770-13773
[6]   Models of permeation in ion channels [J].
Kuyucak, S ;
Andersen, OS ;
Chung, SH .
REPORTS ON PROGRESS IN PHYSICS, 2001, 64 (11) :1427-1472
[7]  
LI D, 2002, ENCY SURFACE COLLOID, P3167
[8]   Ion-beam sculpting at nanometre length scales [J].
Li, J ;
Stein, D ;
McMullan, C ;
Branton, D ;
Aziz, MJ ;
Golovchenko, JA .
NATURE, 2001, 412 (6843) :166-169
[9]   An asymmetric polymer nanopore for single molecule detection [J].
Mara, A ;
Siwy, Z ;
Trautmann, C ;
Wan, J ;
Kamme, F .
NANO LETTERS, 2004, 4 (03) :497-501
[10]   Tests of continuum theories as models of ion channels. I. Poisson-Boltzmann theory versus Brownian dynamics [J].
Moy, G ;
Corry, B ;
Kuyucak, S ;
Chung, SH .
BIOPHYSICAL JOURNAL, 2000, 78 (05) :2349-2363