Electrokinetic behaviour of overlapped electric double layers in nanofluidic channels

Kuan Da Huang, Ruey Jen Yang

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)

Abstract

The ionic concentration variation arising in overlapped electric double layers in nanochannels presents different electrokinetic behaviour from that in microchannels. Using a modified concentration approach, the results reveal that the surface charge density is insensitive to the concentration in the low-salt regime, and a nearly constant streaming conductance is predicted. A scaling analysis confirms that the streaming potential also has a constant value because of length scale effects, but not due to the accumulated charge in the double layer.

Original languageEnglish
Article number115701
JournalNanotechnology
Volume18
Issue number11
DOIs
Publication statusPublished - 2007 Mar 21

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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