[HTML][HTML] 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 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 …
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 …
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