A low-cost goniometer for contact angle measurements using drop image analysis: Development and validation

Contact angle measurements are a widely used method for evaluating surface wettability, but their accessibility is limited by the high cost of commercial goniometers. To address this issue, we developed a low-cost prototype goniometer using locally available materials and a smartphone-based image an...

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Veröffentlicht in:AIP advances 2023-08, Vol.13 (8), p.085123-085123-6
Hauptverfasser: Chalise, Roshan, Niroula, Angash, Shrestha, Pooja, Paudel, Bimal, Subedi, Deepak, Khanal, Raju
Format: Artikel
Sprache:eng
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Zusammenfassung:Contact angle measurements are a widely used method for evaluating surface wettability, but their accessibility is limited by the high cost of commercial goniometers. To address this issue, we developed a low-cost prototype goniometer using locally available materials and a smartphone-based image analysis system to measure contact angles. We validated our approach by comparing its results with those of a standard goniometer for both organic and inorganic materials. For organic samples, the accuracy is greater than 86%, and for inorganic samples, it is greater than 94%. The good agreement between the two methods demonstrates the feasibility of our proposed method for accurate contact angle measurements at a lower cost.
ISSN:2158-3226
2158-3226
DOI:10.1063/5.0164668