Controlling thin liquid film viscosity via modification of substrate surface chemistry

Bowen, James and Cheneler, David and Adams, Mike (2013) Controlling thin liquid film viscosity via modification of substrate surface chemistry. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 418. pp. 112-116. ISSN 0927-7757

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Abstract

The viscosity of thin films of liquid poly(dimethylsiloxane) have been studied on silicon and fluoropolymer-coated silicon by means of a perturbation technique applied using colloid probe atomic force microscopy. The liquid film supported by a silicon substrate exhibited a greater viscosity than the bulk liquid, due to the strong interaction between the molecules near to the liquid/solid interface. In comparison, the liquid film supported by a fluoropolymer-coated substrate exhibited a similar viscosity to the bulk liquid, due to the weak interaction between the liquid and the fluoropolymer surface. This demonstrates the possibility to control the viscosity of thin liquid films via selection of the substrate chemical properties.

Item Type:
Journal Article
Journal or Publication Title:
Colloids and Surfaces A: Physicochemical and Engineering Aspects
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1500/1505
Subjects:
ID Code:
67472
Deposited By:
Deposited On:
08 Nov 2013 15:13
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 08:42