Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session G25: Liquid Crystals III
11:30 AM–2:30 PM,
Tuesday, March 15, 2022
Room: McCormick Place W-187A
Sponsoring
Unit:
DSOFT
Chair: Tim Atherton, Tufts
Abstract: G25.00010 : Templating polymer networks with chiral liquid crystals*
1:18 PM–1:30 PM
Presenter:
Zhaofei Zheng
(Johns Hopkins University)
Authors:
Zhaofei Zheng
(Johns Hopkins University)
Francesca Serra
(University of Southern Denmark)
The pseudolayers of chiral LCs are a good testbed to understand the role of frustration. By refilling different types of chiral LCs with different helical pitches, we test the ability of the polymer network to retain its structure even after the LCs have been washed away. Thus, we obtain free-standing films of polymer network that can be characterized by scanning electron microscopy.
We observe that the polymers do not destroy the intrinsic defects of LC but help stabilize the deformations. The solid network preserves the details of the LC structure when the original LC is washed away. With this strategy, we can get a better understanding of chiral LCs behavior by investigating the frustration of the chiral layers.
*Acknowledgment is made to the Donors of the American Chemical Society Petroleum Research Fund for support of this research, grant 59931-DNI10. This material is based upon work supported by the National Science Foundation under Grant No. NSF DMR 2004532.
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