Experimental Evidence for Algebraic Double-Layer Forces

Autor: Stojimirovic, Biljana, Vis, Mark, Tuinier, Remco, Philipse, Albert P., Trefalt, Gregor
Rok vydání: 2019
Předmět:
Druh dokumentu: Working Paper
DOI: 10.1021/acs.langmuir.9b03077
Popis: According to conventional wisdom electric double-layer forces normally decay exponentially with separation distance. Here we present experimental evidence of algebraically decaying double-layer interactions. We show that algebraic interactions arise in both strongly overlapping as well as counterion-only regimes, albeit the evidence is less clear for the former regime. In both of these cases the disjoining pressure profile assumes an inverse square distance dependence. At small separation distances another algebraic regime is recovered. In this regime the pressure decays as the inverse of separation distance.
Databáze: arXiv