Investigation of complex flow patterns in a moving immersion lens droplet

This work is part of the Industrial Partnership Program (IPP) 'Contact line control during wetting and dewetting' (CLC) of the Foundation for Fundamental Research on Matter (FOM), which is supported financially by the Netherlands Foundation for Scientifi c Research (NWO). The IPP CLC is co- financed by ASML and Oce.

Project goal
This project aims to visualize and investigate the complex flow patterns that occur in a confined Couette flow that resembles a moving droplet of an immersion lens geometry, and to understand how this interacts with the dynamics of the moving contact line. We will make use of the newly developed stereoscopic micro particle image velocimetry (μ-PIV), as well as numerical simulations to gain a better understanding of the various flow patterns that occur at intermediate flow Reynolds numbers. The results should lead to strategies that can achieve flow control and to optimized design of a moving immersion lens.

Hyoungsoo Kim, Sebastian Groβe, Gerrit Elsinga, and Jerry Westerweel, "Full 3D-3C velocity measurement inside a liquid immersion droplet," Experiments in Fluids, 2011, online (DOI:10.1007/s00348-011-1053-y)