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Evaluate the influence of surface roughness on wettability
Speaker Matthew Dixon, PhD, Principal Application Scientist at Biolin Scientific
While contact angle goniometry has been around for many years, we have recently developed a way to account for the underlying surface’s micro-scale roughness. This approach allows us to report the true Young’s Contact Angle (CA) by measuring and subtracting out the roughness contribution.
In this webinar you will learn more about:
How water sessile drop CAs were acquired at the exact same location that fringe projection phase-shifting was used to analyze the surface roughness on a wide variety of different samples.
How we characterized optics with anti-reflective coatings, clay tiles with gloss or matte finishes, wood polymer composite materials used for outdoor decking, and titanium materials used for biomedical implants with varying degrees of roughness.
Date and Time Wednesday April 27th 2016
Los Angeles: 10 am
New York: 1 pm
Helsinki: 8 pm
London: 6 pm
If you miss the webinar, don’t worry! We will email you a link to the recording.
Abstract
While contact angle (CA) goniometry involving placing a drop of liquid on a surface and measuring the resulting angle has been around for many years, we have only recently developed a way to account for the underlying surface’s micro-scale roughness. This approach allows us to report the true Young’s CA by measuring and subtracting out the roughness contribution. In this paper we demonstrate how water sessile drop CAs were acquired at the exact same location that fringe projection phase-shifting was used to analyze the surface roughness on a wide variety of different samples. We characterized optics with anti-reflective coatings, clay tiles with gloss or matte finishes, wood polymer composite materials used for outdoor decking, and titanium materials used for biomedical implants with varying degrees of roughness. The results show roughness corrected CAs greater than 90 o give lower Young’s CAs and corrected CAs less than 90 o show larger Young’s CAs.
