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Effect of Surface Roughness and Electrostatic Surface Potentials on Forces Between Dissimilar Surfaces in Aqueous Solution
Author(s) -
Valtiner Markus,
Kristiansen Kai,
Greene George W.,
Israelachvili Jacob N.
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201003709
Subject(s) - dlvo theory , materials science , van der waals force , aqueous solution , chemical physics , surface finish , surface roughness , surface force , steric effects , surface (topology) , range (aeronautics) , electrostatics , nanotechnology , composite material , chemistry , classical mechanics , colloid , molecule , physics , geometry , organic chemistry , mathematics , stereochemistry
The first surface force measurements under electrochemical potential control between a metal and a ceramic surface across a liquid medium (water) are reported. Our experiments also investigate and reveal how increasing levels of surface roughness and dissimilarity between the potentials of the interacting surfaces influence the strength and range of electric double layer, van der Waals, hydration, and steric forces and how this contributes to deviations from DLVO theory at small distances within aqueous solution.