Dresden 2017 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 25: Posters - Soft Particles, Microswimmers, Microfluidics
DY 25.10: Poster
Dienstag, 21. März 2017, 18:15–21:00, P3
Controlled motion of L-shaped microswimmers — •Tobias Bäuerle1, Julia Riede1, Daniel Häufle2, Jakob Steiner1, Keyan Ghazi-Zahedi3, Syn Schmitt1, Christian Holm1, and Clemens Bechinger1,4 — 1Universität Stuttgart, Deutschland — 2Eberhard Karls Universität, Tübingen, Deutschland — 3Max-Planck-Insitut für Mathematik in den Naturwissenschaften, Leipzig, Deutschland — 4Max-Planck-Institut für Intelligente Systeme, Stuttgart, Deutschland
Microswimmers can be steered by controlling the propulsion velocity depending on their orientation and position with respect to a target [1]. For spherical particles the orientation and, hence, the direction of motion changes only due to rotational diffusion. However, L-shaped particles, subjected to a gravitational force field, reorient depending on their orientation and swimming velocity [2]. In this sense, the shape of the particle, i.e. its morphology, significantly influences the swimming behavior. We investigate, numerically and experimentally, how this behavior can be exploited for steering these particles to reach a target position or follow a desired path. The resulting strategies are quantitatively compared by different figures of merit, such as energy expenditure, time to reach the target, deviation from an ideal path, or morphological computation [3].
1 D. Haeufle et al., Physical Review E, 94, 012617 (2016)
2 Ten Hagen et al., Nature Communications, 5, 4829 (2014)
3 K. Ghazi-Zahedi et al., Frontiers in Robotics and AI, 3, 1 (2016)