Measurements of the forces between a metal surface and mica across liquids

Abstract

Results of direct measurements of the interactions between a silver surface and a mica surface across liquids are presented. In the nonpolar liquid octamethylcyclotetrasiloxane oscillatory solvation forces are found, the range of which is shorter than between two mica surfaces. In aqueous electrolyte solutions long-range double-layer forces are present. At smaller separations the interaction is attractive in conductivity water but steeply repulsive in 10−4 M sodium carbonate.