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SMuK 2021 – scientific programme

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P: Fachverband Plasmaphysik

P 11: Complex Plasmas and Dusty Plasmas I

P 11.1: Invited Talk

Thursday, September 2, 2021, 11:00–11:30, H4

Microfluidic flow in single-layer dusty plasmas — •Peter Hartmann1 and Truell W. Hyde21Wigner Research Centre for Physics, Budapest, Hungary — 2CASPER, Baylor University, Waco, TX, USA

Experiments on strongly coupled dusty plasmas provide unique access to the microscopic details of macroscopic processes in condensed matter. Since the early years of this field, the application to hydrodynamic processes was one of the main motivations. In most cases, however, the complexities of the experiments prevented the drawing of universal conclusions. In our experiment, utilizing the control provided by a plane-parallel radio frequency (RF) discharge, two metallic disks are used to form an electrostatic potential channel. Dust particle flow through the channel was induced by indirect laser manipulation, which is essential in order to keep the external effects acting on the particles under control. By adjusting the argon gas pressure and RF power, the channel was tuned to allow the formation of single or multiple lanes of transiting dust particles. We use this system to address fundamental details of microfluidic flows like the acceleration and stopping of particles, lane formation and ordering in the channel, etc.

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