Control of microswimmers by spiral nematic vortices: Transition from individual to collective motion and contraction, expansion, and stable circulation of bacterial swirls

Autor: Hao Yu, Runa Koizumi, Robert J. Lastowski, Taras Turiv, Oleg D. Lavrentovich, Irakli Chaganava, Mikhail Genkin, Igor S. Aranson, Qi-Huo Wei
Rok vydání: 2020
Předmět:
Zdroj: Physical Review Research. 2
ISSN: 2643-1564
DOI: 10.1103/physrevresearch.2.033060
Popis: The authors introduce a method to control swimming bacteria by a liquid crystal environment. The paper shows that a liquid crystal nematic patterned as a spiral vortex causes an individual-to-collective transition as the bacterial concentration increases, in which non-polar swimming of individual bacteria is replaced by a unipolar circular swirling of condensed swarms.
Databáze: OpenAIRE