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Updated: Jul 15, 2026
Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method
Published on: June 14, 2019
Image analysis system for evaluating sliding behavior of a liquid droplet on a hydrophobic surface
Munetoshi Sakai1, Ayako Hashimoto, Naoya Yoshida
1Kanagawa Academy of Science and Technology, 308 East, KSP, 3-2-1 Sakado, Kawasaki-Shi, Kanagawa, Japan. sakai@newkast.or.jp
Abstract:
An analysis system was developed to evaluate the sliding behavior of a liquid droplet on a hydrophobic surface. This system enables continuous and simultaneous measurement of both the sliding acceleration and shape deformation during the sliding of a liquid droplet. Moreover, the velocity vector of the internal fluidity of a sliding droplet was obtained by employing particle image velocimetry in the analysis system. This evaluation method pioneers the measurement of the dynamic wettability of a hydrophobic solid surface.
