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DY: Dynamik und Statistische Physik
DY 46: Poster
DY 46.93: Poster
Thursday, March 30, 2006, 16:00–18:00, P1
Rupture dynamics of thin liquid films — •Frank Müller and Ralf Stannarius — Otto-von-Guericke-Universität Magdeburg; Institut für Experimentelle Physik
Thin liquid films show a characteristic rupture dynamics. After the equilibriumshape is appropriately disturbed (e.g. by piercing), a hole grows with edges propagating driven by the surface tension of the liquid. The dynamics of such films was first described by Rayleigh in the early 20th century. Corresponding experiments have been reported on plane soap films and catenoids (e.g. Ranz et al. 1959 and Cryer et al. 1992). It was found that the velocity of the edge of the hole differs with approximately 10 % from values calculated by Rayleigh, who disregarded dissipation. We study the dynamics of smectic liquid crystal films with particular focus on catenoid shaped films. A high-speed camera (more than 10.000 fps) is used for the recording of the rupture process.