Slippery and mobile hydrophobic electrokinetics: From single walls to nanochannels

• DOI: 10.1016/j.cocis.2023.101742
• Publication Date: 2023-08-04T07:37:26Z
• Authors: Olga I. Vinogradova; Elena F. Silkina; Evgeny S. Asmolov
• Keywords: Soft Condensed Matter (cond-mat.soft); FOS: Physical sciences; Condensed Matter - Soft Condensed Matter

11 pages, 7 figures<br/>We discuss how the wettability of solid walls impacts electrokinetic properties, from large systems to a nanoscale. We show in particular how could the hydrophobic slippage, coupled to confinement effects, be exploited to induce novel electrokinetic properties, such as a salt-dependent giant amplification of zeta potential and conductivity, and a much more efficient energy conversion. However, the impact of slippage is dramatically reduced if some surface charges migrate along the hydrophobic wall under an applied field.<br/>