Change search
ReferencesLink to record
Permanent link

Direct link
Investigation on contact angle measurement methods and wettability transition of porous surfaces
Show others and affiliations
2016 (English)In: Surface & Coatings Technology, ISSN 0257-8972, E-ISSN 1879-3347, Vol. 292, 72-77 p.Article in journal (Refereed) PublishedText
Abstract [en]

Various solid surfaces (e.g., smooth titanium surface, smooth aluminum surface, polished copper surfaces, polished silver surfaces and porous copper surfaces) were prepared to quantify the reliability of half-angle algorithm and axisymmetric drop shape analysis (ADSA) algorithm for calculating contact angles. Besides, the effects of surface conditions on contact angle values were also investigated. The experimental results of 10 repeated tests for each surface show that both algorithms have good accuracy for an acute contact angle, while the ADSA algorithm is better than the half-angle algorithm for an obtuse contact angle. Furthermore, with the decrease of surface roughness, the contact angle increases but the standard deviation of contact angles by 10 repeated tests decreases. In addition, the porous layer on copper surface by electrochemical deposition shows a super hydrophilic property, but it could change to be super hydrophobic after exposed in ambient air for 24 h. Interestingly, the surface wettability reverses to be super hydrophilic again after it is immersed in water, and the inorganic contamination is the reason of formal change from the super hydrophilic status to the super hydrophobic status.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 292, 72-77 p.
Keyword [en]
ADSA, Contact angle measurement, Half-angle, Porous surface, Wettability, Algorithms, Angle measurement, Copper, Hydrophilicity, Hydrophobicity, Reduction, Reliability analysis, Surface roughness, Wetting, Axisymmetric drop shape analysis, Electrochemical deposition, Inorganic contamination, Superhydrophilic property, Surface wettability, Contact angle
National Category
Manufacturing, Surface and Joining Technology
URN: urn:nbn:se:kth:diva-186992DOI: 10.1016/j.surfcoat.2016.03.014ISI: 000375738400010ScopusID: 2-s2.0-84960474390OAI: diva2:929357

QC 20160518

Available from: 2016-05-18 Created: 2016-05-16 Last updated: 2016-06-08Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Ma, Weimin
By organisation
Nuclear Power Safety
In the same journal
Surface & Coatings Technology
Manufacturing, Surface and Joining Technology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 4 hits
ReferencesLink to record
Permanent link

Direct link