Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session C06: Rheology and Flow of Soft Materials
3:00 PM–6:00 PM,
Monday, March 15, 2021
Room: 06
Sponsoring
Unit:
DSOFT
Chair: Irmgard Bischofberger, Massachusetts Institute of Technology MIT
Abstract: C06.00002 : Shear Yieldind and Percolation Transition in Smectics Liquid Crystals*
3:12 PM–3:24 PM
Live
Presenter:
Livio Nicola Carenza
(Physics, University of Bari and INFN)
Authors:
Livio Nicola Carenza
(Physics, University of Bari and INFN)
Giuseppe Gonnella
(Physics, University of Bari and INFN)
Davide Marenduzzo
(Physics, University of Edinburgh)
Giuseppe Negro
(Physics, University of Bari and INFN)
Here, we numerically study the rheology of lyotropic smectic liquid crystals by means of a continuous approach based on the Brazovskii theory for microphase separation [1].
We show that the transition from the solid-like regime toward the flowing state occurs due to the unbinding of dislocation pairs and their consequent annihilation. Importantly, we analyze how dislocations pairs lead to long-ranged plumes of elastic stress which result in the development of large unstrained regions and long-lasting shear banding.
Morever, we furnish solid evidence that the yielding (subcritical) transition belongs to the direct percolation universality class.
[1] F. Bonelli, L.N. Carenza et al., Sci. Rep., 9, 2019.
*The work has been performed under the Project HPC-EUROPA3 (INFRAIA-2016-1-730897), with the support of the EC Research Innovation Action under the H2020 Programme; the author gratefully acknowledges the technical support provided by ARCHER.
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