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Structure and solvation forces in confined films of alkanes

By Marjolein Dijkstra

Abstract

We compute by computer simulations the solvation force of a system of linear and branched alkanes confined in a slab geometry. The\ud solvation force for linear decane oscillates with distance with a periodicity close to the width of the molecules. The branched alkanes, 2-\ud methylundecane and 2-methylheptane, show a similar oscillatory behaviour, however the oscillations are decreased with a factor of about\ud three and show a long-range attractive force. In addition, we show that the critical temperature of the liquid-vapour coexistence of npentane\ud shifts to lower temperatures upon confining

Topics: Natuur- en Sterrenkunde, Thin fluid films, Alkanes, Computer simulations, Solvation forces
Year: 1998
OAI identifier: oai:dspace.library.uu.nl:1874/19124
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