Steric-effect-induced enhancement of electrical-double-layer overlapping phenomena

Siddhartha Das and Suman Chakraborty
Phys. Rev. E 84, 012501 – Published 20 July 2011

Abstract

In this paper, we demonstrate that nontrivial interactions between steric effect and electrical-double-layer (EDL) overlap phenomena may augment the effective extent of EDL overlap in narrow fluidic confinements to a significant extent by virtue of rendering the channel centerline potential tending to the ζ potential in a limiting sense as the steric effect progressively intensifies. Such a behavior may result in a virtually uniform (undiminished) magnitude of the EDL potential across the entire channel height and may cause lowering of the total charge within the EDL.

  • Figure
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  • Received 3 March 2011

DOI:https://doi.org/10.1103/PhysRevE.84.012501

©2011 American Physical Society

Authors & Affiliations

Siddhartha Das1 and Suman Chakraborty2

  • 1Physics of Fluids Group, J. M. Burgers Centre for Fluid Dynamics, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
  • 2Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur, Kharagpur-721302, India

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Vol. 84, Iss. 1 — July 2011

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