Electrokinetic energy conversion efficiency in ion-selective nanopores

Chih Chang Chang, Ruey Jen Yang

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)


Taking hydrodynamic slippage into account, we derived an exact expression for the figure of merit to evaluate the electrokinetic energy conversion efficiency and power of an ion-selective nanopore. In the absence of slip, and when the ratio of the radius and the Gouy-Chapmann length (a / GC) is approximately 10, the highest efficiency for an electrolyte consisting of simple monovalent ions was predicted to be approximately 9.7. While this efficiency is low, it can be greatly improved to a potentially practical efficiency (40) when the slip ratio (b / a) is greater than 0.7.

Original languageEnglish
Article number083102
JournalApplied Physics Letters
Issue number8
Publication statusPublished - 2011 Aug 22

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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