Rolling and slipping motion of a water droplet sandwiched between two parallel plates coated with fluoroalkylsilanes

Shunsuke Suzuki; Akira Nakajima; Munetoshi Sakai; Ayako Hashimoto; Naoya Yoshida; Yoshikazu Kameshima; Kiyoshi Okada

doi:10.1016/j.apsusc.2008.09.059

Rolling and slipping motion of a water droplet sandwiched between two parallel plates coated with fluoroalkylsilanes

Shunsuke Suzuki, Akira Nakajima, Munetoshi Sakai, Ayako Hashimoto, Naoya Yoshida, Yoshikazu Kameshima, Kiyoshi Okada

Research output: Contribution to journal › Article

11 Citations (Scopus)

Abstract

Si plates were treated using two fluoroalkylsilanes (FAS17 and FAS3), and the internal fluidity of a water droplet sliding between two parallel plates on a slope was observed directly using particle image velocimetry (PIV) method with a high-speed camera system. The interfacial caterpillar-like rotation flows with slip motion at the solid-liquid interface were related to the combination of top and bottom wettabilities. The water droplets accelerated by a rolling and slipping motion on FAS17 coatings; the acceleration was dominated by a rolling motion on FAS3 coatings. A droplet's shape, solid-liquid molecular interaction, and the gravitic force will be important factors determining the sliding mode on a solid surface.

Original language	English
Pages (from-to)	3414-3420
Number of pages	7
Journal	Applied Surface Science
Volume	255
Issue number	5 PART 2
DOIs	https://doi.org/10.1016/j.apsusc.2008.09.059
Publication status	Published - Dec 30 2008

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Keywords

Coatings
Hydrophobicity
Particle image velocimetry
Silane
Wetting

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

Cite this

Suzuki, S., Nakajima, A., Sakai, M., Hashimoto, A., Yoshida, N., Kameshima, Y., & Okada, K. (2008). Rolling and slipping motion of a water droplet sandwiched between two parallel plates coated with fluoroalkylsilanes. Applied Surface Science, 255(5 PART 2), 3414-3420. https://doi.org/10.1016/j.apsusc.2008.09.059

Rolling and slipping motion of a water droplet sandwiched between two parallel plates coated with fluoroalkylsilanes. / Suzuki, Shunsuke; Nakajima, Akira; Sakai, Munetoshi; Hashimoto, Ayako; Yoshida, Naoya; Kameshima, Yoshikazu; Okada, Kiyoshi.

In: Applied Surface Science, Vol. 255, No. 5 PART 2, 30.12.2008, p. 3414-3420.

Research output: Contribution to journal › Article

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Access to Document

10.1016/j.apsusc.2008.09.059