Diffuse Interface Modeling of Droplet Impact on a Pre-Patterned Solid Surface

• Published in: Macromolecular rapid communications Vol. 26; no. 4; pp. 298 - 303
• Main Authors: Khatavkar, Vinayak V., Anderson, Patrick D., Duineveld, Paul C., Meijer, Han H. E.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Weinheim WILEY-VCH Verlag 21.02.2005; WILEY‐VCH Verlag; Wiley
• Subjects: barrier; computer modeling; Condensed matter: structure, mechanical and thermal properties; diffuse interface model; droplet impact; Exact sciences and technology; Physics; Solid-fluid interfaces; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); wettability; Wetting; Geometrical shape; Patterning; Liquid solid interface; Wettability; computer modeling; barrier; diffuse interface model; Barriers; droplet impact; Droplets; Computerized simulation; Velocity distribution
• ISSN: 1022-1336; 1521-3927
• DOI: 10.1002/marc.200400478

The impact of a droplet on a solid surface, pre‐patterned with a barrier, was studied using a diffuse interface model. The effect of the wettability of the barrier material and the width of the barrier on droplet spreading was investigated. The results show that depending on the barrier wettability and width, the flow of the spreading droplet can be controlled and that the droplet may or may not overflow the barrier. Droplet shapes with the corresponding velocity field for different barrier contact angles at ± = 1.5.