By Topic

Conductance method for the determination of ion diffusion coefficient through a nanochannel

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Xiao, B. ; Dept. of Inf. & Electron. Eng., Zhejiang Univ., Hangzhou, China ; Wu, C. ; Sun, Y. ; Jin, Z.

A method of using conductance measurements and its relation with concentration of the solution inside a nanochannel is applied to measure the diffusion coefficient of ions in the nanochannel for the first time. Extension of a conductance-based technique to the nanodomain is also validated. Using an analyte of 0.05 mol/l KCl solution at 296.15 K, the experimental results obtained show that the ion diffusion coefficient through a nanochannel decreases greatly to 1 of that through a microchannel. The results indirectly explain why the etching rate of thermal oxide in the nanochannel is much smaller than that in the microchannel. This study may be helpful for research on nanoscale diffusion, such as nanosized ion batteries and nanoscale diffusive properties in medicine. Surface forces are also analysed as possible reasons for the great deviation of ion diffusion coefficient through the nanochannel from that through the microchannel.

Published in:

Micro & Nano Letters, IET  (Volume:4 ,  Issue: 4 )