Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session G07: Enzyme Driven Active Matter from Nano to Microscale
11:30 AM–1:54 PM,
Tuesday, March 7, 2023
Room: Room 130
Sponsoring
Units:
DSOFT DBIO
Chair: Wylie Ahmed, California State University, Fullerton; Benjamin Rogers
Abstract: G07.00006 : Active boundary layers in confined active nematics*
12:54 PM–1:06 PM
Presenter:
Jordi Ignés-Mullol
(University of Barcelona)
Authors:
Jordi Ignés-Mullol
(University of Barcelona)
Jérôme Hardoüin
(University of Barcelona)
Claire Doré
(ESPCI Paris)
Justine Laurent
(ESPCI Paris)
Teresa Lopez-Leon
(CNRS - Sorbonne University)
Francesc Sagués
(University of Barcelona)
Here, we work with the well-known kinesin/tubulin active nematic under confinement and show that the self-sustained flows can develop active boundary layers that topologically polarize the confining walls and determine the bulk flows. Differently from the polarization by electric charges that drive electrokinetic phenomena and stabilize colloidal suspensions, here the boundary is populated by distortions of the orientational field, or topological defects, of identical negative charge. In contrast to their bulk counterparts both in passive and active liquid crystals, defects in the active boundary layer feature the ability to merge between like-sign distortions and exhibit collective dynamics that are reminiscent of a one-dimensional Kuramoto-Sivashinsky-like description of spatiotemporal chaos.
*This work has received funding from Spain’s MINECO, project PID2019-108842GB-C22, and from the European Union H2020 FET-PROACTIVE grant 952152 (ANGIE).
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700