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dc.contributor.authorWu, Jinbo
dc.contributor.authorZhang, Mengying
dc.contributor.authorWang, Xiang
dc.contributor.authorLi, Shunbo
dc.contributor.authorWen, Weijia
dc.date.accessioned2016-02-25T12:32:34Z
dc.date.available2016-02-25T12:32:34Z
dc.date.issued2011-05-17
dc.identifier.citationWu J, Zhang M, Wang X, Li S, Wen W (2011) A Simple Approach for Local Contact Angle Determination on a Heterogeneous Surface. Langmuir 27: 5705–5708. Available: http://dx.doi.org/10.1021/la200697k.
dc.identifier.issn0743-7463
dc.identifier.issn1520-5827
dc.identifier.pmid21510655
dc.identifier.doi10.1021/la200697k
dc.identifier.urihttp://hdl.handle.net/10754/597406
dc.description.abstractWe report a simple approach for measuring the local contact angle of liquids on a heterogeneous surface consisting of intersected hydrophobic and hydrophilic patch arrays, specifically by employing confocal microscopy and the addition of a very low concentration of Rhodamine-B (RB) (2 × 10 -7 mol/L). Interestingly, RB at that concentration was found to be aggregated at the air-liquid and solid (hydrophobic patch only)-liquid interfaces, which helps us to distinguish the liquid and solid interfaces as well as hydrophobic and hydrophilic patches by their corresponding fluorescent intensities. From the measured local contact angles, the line tension can be easily derived and the value is found to be (-2.06-1.53) × 10-6 J/m. © 2011 American Chemical Society.
dc.description.sponsorshipThis publication is based on work partially supported by Award No. SA-C0040/UK-C0016, made by King Abdullah University of Science and Technology (KAUST), Hong Kong RGC grants HKUST 603608 and 604710, respectively.
dc.publisherAmerican Chemical Society (ACS)
dc.titleA Simple Approach for Local Contact Angle Determination on a Heterogeneous Surface
dc.typeArticle
dc.identifier.journalLangmuir
dc.contributor.institutionHong Kong University of Science and Technology, Hong Kong, China
kaust.grant.numberSA-C0040/UK-C0016


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