Active Janus particles in a complex plasma
Plasma Physics
2020-08-19 v2
Abstract
Active Janus particles suspended in a plasma were studied experimentally. The Janus particles were micron-size plastic microspheres, one half of which was coated with a thin layer of platinum. They were suspended in the plasma sheath of a radio-frequency discharge in argon at low pressure. The Janus particles moved in characteristic looped trajectories suggesting a combination of spinning and circling motion; their interactions led to the emergence of rich dynamics characterized by non-Maxwellian velocity distribution. The particle propulsion mechanism is discussed, the main force driving the particle motion is identified as photophoretic force.
Cite
@article{arxiv.2006.14500,
title = {Active Janus particles in a complex plasma},
author = {V. Nosenko and F. Luoni and A. Kaouk and M. Rubin-Zuzic and H. Thomas},
journal= {arXiv preprint arXiv:2006.14500},
year = {2020}
}
Comments
6 pages, 6 figures