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Droplet bouncing on the surface with micro-structure

Bobinski T., Sobieraj G., Psarski M., Celichowski G., Rokicki J.

Archives of Mechanics

2017

Vol. 69, nr 2

177--193

In this paper, we present static and dynamic interactions of water droplets with a micro-structured surface that exhibits hydrophobic properties. Droplets with two different diameters (D0 = 0.6 ± 0.1 mm and D0 = 2.6 ± 0.1 mm) were studied for impact velocities in the range of 0.1 ÷ 2.5 m/s. This allowed to investigate the influence of gravity on the collision behavior during an impact. The main result of the present research is the determination of the critical conditions for consecutive transitions leading to various scenarios of droplet rebound for each of the investigated surface geometry.

Samooczyszczające się powierzchnie

Zalech W. B.

Eliksir

2015

nr 2

40--43

Modelling drop dynamics on patterned surfaces

Yeomans J.M., Kusumaatmaja H.

Bulletin of the Polish Academy of Sciences. Technical Sciences

2007

Vol. 55, nr 2

203-210

We present a mesoscopic model able to capture the physics of drops moving across patterned surfaces. In this model, interfaces appear naturally, and "both chemical and topological patterning ran be incorporated wit h relative ease, making it particularly suitable to study the behaviour of evolving drops. We summarise results on drop dynamics, including drops spreading on a chemically patterned surface, using a hydrophobic grid to alleviate mottle and the transition and dynamics of drops moving across a superhydrophobic surface.