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


Das, Siddhartha and Chakraborty, Suman (2011) Steric-effect-induced enhancement of electrical-double-layer overlapping phenomena. Physical Review E: Statistical, nonlinear, and soft matter physics, 84 (1). 012501. ISSN 1539-3755

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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.

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