Investigations of the Force−Distance Behavior in Polar Liquids

Investigations of the Force−Distance Behavior in Polar Liquids

Scanning force microscopy (force−distance curves) is employed to study the interaction of two SiO x surfaces in a homologous series of hydrogen-bonded liquids. The force−distance behavior and adhesion, determined by solvation effects as well as van der Waals and electrostatic forces, vary systematic...

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Veröffentlicht in:The journal of physical chemistry. B 1999-08, Vol.103 (32), p.6741-6745
Hauptverfasser: Boehnke, U.-C, Brodowsky, H. M, Groothues, H, Kremer, F
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container_issue 32
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container_title The journal of physical chemistry. B
container_volume 103
creator Boehnke, U.-C
Brodowsky, H. M
Groothues, H
Kremer, F
description Scanning force microscopy (force−distance curves) is employed to study the interaction of two SiO x surfaces in a homologous series of hydrogen-bonded liquids. The force−distance behavior and adhesion, determined by solvation effects as well as van der Waals and electrostatic forces, vary systematically with the structure of the liquid molecule. A model is proposed which relates the molecular arrangement in the confining geometry of the tip and the underlying surface to the number of hydroxyl groups of the solvents (hydrogen-bonded networks). For a quantitative evaluation, the spring constant is calculated from the geometric parameters and the eigenfrequencies of the cantilever.
doi_str_mv 10.1021/jp983780v
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title Investigations of the Force−Distance Behavior in Polar Liquids
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