Measurements of the Force between Fluorocarbon Monolayer Surfaces in Air and Water
We have measured forces between fluorocarbon surfaces prepared by three different methods using heptadecafluoro-1,1,2,2,-tetrahydrodecyltriethoxysilane (FTE): LB deposition (LB), adsorption from diluted FTE solution with chloroform (FTE/CHCl3), and adsorption from undiluted FTE liquid (FTE/neat). In dry air, a van der Waals attraction was observed between the surfaces except for the FTE/neat surfaces. The Hamaker constant was found to be 7×10-20 J, which is comparable to that of the fused...[Show more]
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