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DY: Fachverband Dynamik und Statistische Physik

DY 53: Complex Fluids and Soft Matter (joint session DY/ CPP / BP)

DY 53.13: Vortrag

Mittwoch, 14. März 2018, 18:45–19:00, BH-N 334

Hydrodynamics of droplet lattices in quasi 2D free-standing liquid crystal films — •Christoph Klopp, Torsten Trittel, Alexey Eremin, Kirsten Harth, and Ralf Stannarius — Otto-von-Guericke Universität Magdeburg

In an experiment on ISS, we prepared nearly regular triangular droplet lattices on free-standing liquid crystal films to investigate the diffusion and vibration dynamics on these lattices [1]. The layered structure in smectic A phases allows the preparation of thin and homogeneous macroscopic films. We record the motion of the droplets and calculate their diffusion characteristics. The experiments are compared to numerical simulations of droplet arrangements assuming specific repulsive interaction potentials. The mean-square displacement of the droplets reveals mobilities in the lattice and information on the strength of the potential.

The study was supported by NASA, DFG and DLR within the OASIS project.

[1] N. A. Clark, A. Eremin, M. A. Glaser, N. Hall, K. Harth, C. Klopp, J. E. Maclennan, C. S. Park, R. Stannarius, P. Tin, W. N. Thurmes, and T. Trittel, Realization of hydrodynamic experiments on quasi-2D liquid crystal films in microgravity, ASR Volume 60, 737-751, 2017