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dc.contributor.authorFung, C.
dc.contributor.authorSedev, Rossen
dc.contributor.authorConnor, J.
dc.date.accessioned2017-07-27T05:22:28Z
dc.date.available2017-07-27T05:22:28Z
dc.date.created2017-07-26T11:11:24Z
dc.date.issued2014
dc.identifier.citationFung, C. and Sedev, R. and Connor, J. 2014. Wetting films: A technique for probing the microscopic meniscus using white light interferometry. Advanced Powder Technology. 25 (4): pp. 1171-1176.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/54877
dc.identifier.doi10.1016/j.apt.2014.05.008
dc.description.abstract

The affinity between a liquid and a solid is characterised by the contact angle. Traditional contact angle measurement techniques such as the sessile drop and Wilhelmy plate methods provide macroscopic information about the solid-liquid-vapour contact line. Our knowledge of the microscopic details is incomplete due to experimental limitations. In order to examine a liquid meniscus on a microscopic scale we adapted the white light interferometry used in the Surface Force Apparatus. With this approach we extract film thickness with nanometre resolution and its variation over tens of micrometres along the solid surface. We describe here the technique and its application to the spreading of an aqueous 0.1 M KCl droplet on a freshly cleaved sheet of mica. The film profile was also followed throughout the spreading and subsequent evaporation of an ethanol droplet. Microscopic details obtainable with this technique can provide a check for theoretical descriptions of wetting. They could offer a unique insight into the early stages of coating, liquid creeping and surface reactivity. Such details are relevant to corrosive films creeping on pipes in process plants, evaporation from heat exchangers, and the application and drying of paints and adhesives.

dc.publisherElsevier
dc.titleWetting films: A technique for probing the microscopic meniscus using white light interferometry
dc.typeJournal Article
dcterms.source.volume25
dcterms.source.number4
dcterms.source.startPage1171
dcterms.source.endPage1176
dcterms.source.issn0921-8831
dcterms.source.titleAdvanced Powder Technology
curtin.departmentDepartment of Chemical Engineering
curtin.accessStatusFulltext not available


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