subject predicate object context
43390 Creator c3baa1aae2495d9fcf383c433b46bfe0
43390 Creator ext-7d4d377d93a0d65606c75b02ebd7937f
43390 Creator ext-c16c432721196b374b08cf679e8b105e
43390 Date 2014-04-28
43390 Is Part Of repository
43390 abstract When two surfaces confine water layers between them at the nanoscale, the behaviour of these confined water molecules can deviate significantly from the behaviour of bulk water, and it could reflect on the adhesion of such surfaces. This study assesses the role of confined water layers on the adhesion of hydrophilic surfaces and how sensitive this adhesion is to the presence of contaminants. Our methodology used atomic force microscopy adhesion measurements, whereby an alumina-sputtered sphere-tipped cantilever was interacted versus a flat alumina single crystal. Testing was performed under immersed conditions using (i) water, (ii) water/dimethylformamide mixtures, (iii) water/ethanol mixtures, and (iv) water/formamide mixtures. These solutions were intended to assess the influence of dielectric constant, molecule size, and the number of hydrogen bonding opportunities available to molecules upon confinement between surfaces. It was found that dilute concentrations of ethanol and formamide decreased the adhesion. In contrast, the adhesion increased in the presence of dilute concentrations of dimethylformamide. The adhesion was attenuated by in excess of two orders of magnitude for high concentrations of the organic solutes.
43390 authorList authors
43390 presentedAt ext-3ccc7aaaa2e144cada07aebd81414412
43390 status nonPeerReviewed
43390 uri http://data.open.ac.uk/oro/document/319290
43390 uri http://data.open.ac.uk/oro/document/319298
43390 uri http://data.open.ac.uk/oro/document/319299
43390 uri http://data.open.ac.uk/oro/document/319300
43390 uri http://data.open.ac.uk/oro/document/319301
43390 uri http://data.open.ac.uk/oro/document/319302
43390 uri http://data.open.ac.uk/oro/document/319880
43390 type AcademicArticle
43390 type Article
43390 label Bowen, James ; Rossetto, Herbert L. and Kendall, Kevin (2014). Adhesion attenuation and enhancement in aqueous solutions. In: Cell Adhesion Century: Culture Breakthrough, 28-29 Apr 2014, London, UK.
43390 label Bowen, James ; Rossetto, Herbert L. and Kendall, Kevin (2014). Adhesion attenuation and enhancement in aqueous solutions. In: Cell Adhesion Century: Culture Breakthrough, 28-29 Apr 2014, London, UK.
43390 Title Adhesion attenuation and enhancement in aqueous solutions
43390 in dataset oro