2004/11/10 by Laurent Joly, Christophe Ybert, Emmanuel Trizac +2 · 327 citations
Chemistry · Engineering · Physics and Astronomy · #Chemical physics #Chemistry #Composite material #Computational chemistry #Double layer (biology) #Electric field #Electric potential #Electrokinetic phenomena #Electrostatics and Colloid Interactions #Layer (electronics) #Materials science #Microfluidic and Bio-sensing Technologies #Microfluidic and Capillary Electrophoresis Applications #Molecular dynamics #Nanotechnology #Physics #Slippage #Slipping #Substrate (aquarium) #Voltage #Wetting #Zeta potential #cond-mat.soft #cond-mat.stat-mech
paper · pdf · doi:10.1103/physrevlett.93.257805
published in Physical Review Letters 93(25), 257805 (American Physical Society) · accepted for publication in Physical Review Letters
arxiv created 2004/11/10 · openalex publication_date 2004/12/01 · arxiv updated 2011/03/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We show, using extensive molecular dynamics simulations, that the dynamics of the electric double layer (EDL) is very much dependent on the wettability of the charged surface on which the EDL develops. For a wetting surface, the dynamics, characterized by the so-called zeta potential, is mainly controlled by the electric properties of the surface, and our work provides a clear interpretation for the traditionally introduced immobile Stern layer. In contrast, the immobile layer disappears for nonwetting surfaces, and the zeta potential deduced from electrokinetic effects is considerably amplified by the existence of a slippage at the solid substrate.