A Simple Approach for Local Contact Angle Determination on a Heterogeneous Surface

Handle URI:
http://hdl.handle.net/10754/597406
Title:
A Simple Approach for Local Contact Angle Determination on a Heterogeneous Surface
Authors:
Wu, Jinbo; Zhang, Mengying; Wang, Xiang; Li, Shunbo; Wen, Weijia
Abstract:
We 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.
Citation:
Wu 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.
Publisher:
American Chemical Society (ACS)
Journal:
Langmuir
KAUST Grant Number:
SA-C0040/UK-C0016
Issue Date:
17-May-2011
DOI:
10.1021/la200697k
PubMed ID:
21510655
Type:
Article
ISSN:
0743-7463; 1520-5827
Sponsors:
This 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.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorWu, Jinboen
dc.contributor.authorZhang, Mengyingen
dc.contributor.authorWang, Xiangen
dc.contributor.authorLi, Shunboen
dc.contributor.authorWen, Weijiaen
dc.date.accessioned2016-02-25T12:32:34Zen
dc.date.available2016-02-25T12:32:34Zen
dc.date.issued2011-05-17en
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.en
dc.identifier.issn0743-7463en
dc.identifier.issn1520-5827en
dc.identifier.pmid21510655en
dc.identifier.doi10.1021/la200697ken
dc.identifier.urihttp://hdl.handle.net/10754/597406en
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.en
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.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleA Simple Approach for Local Contact Angle Determination on a Heterogeneous Surfaceen
dc.typeArticleen
dc.identifier.journalLangmuiren
dc.contributor.institutionHong Kong University of Science and Technology, Hong Kong, Chinaen
kaust.grant.numberSA-C0040/UK-C0016en
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