Image analysis system for evaluating sliding behavior of a liquid droplet on a hydrophobic surface

• Published in: Review of scientific instruments Vol. 78; no. 4; p. 045103
• Main Authors: Sakai, Munetoshi, Hashimoto, Ayako, Yoshida, Naoya, Suzuki, Shunsuke, Kameshima, Yoshikazu, Nakajima, Akira
• Format: Journal Article
• Language: English
• Published: United States 01-04-2007
• Subjects: Algorithms; Hydrophobic and Hydrophilic Interactions; Image Processing, Computer-Assisted; Lasers
• ISSN: 0034-6748
• DOI: 10.1063/1.2716005

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.