Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session A35: Liquid Crystals I
8:00 AM–10:12 AM,
Monday, March 4, 2024
Room: 103A
Sponsoring
Unit:
DSOFT
Chair: Tadej Emersic, University of Chicago, Pritzker School of Molecular Engineer
Abstract: A35.00006 : Periodic Frederiks transition in a planar ferroelectric nematic cell*
9:00 AM–9:12 AM
Presenter:
Oleg D Lavrentovich
(Kent State University)
Authors:
Oleg D Lavrentovich
(Kent State University)
Bijaya Basnet
(Kent State University)
Vassili G Nazarenko
(Institute of Physics, National Academy of Sciences of Ukraine)
Oleksandr Kurochkin
(Institute of Physics, National Academy of Sciences of Ukraine)
Oleksandr Buluy
(Institute of Physics, National Academy of Sciences of Ukraine)
Here we demonstrate that an electric field applied to a low-molecular-weight ferroelectric nematic causes complex splay-twist periodic spatial modulation of spontaneous polarization. The patterns are either two-dimensional (splay-twist stripes) or three-dimensional (periodic lattice of +1 and -1 defects). The phenomenon is explained by a large splay modulus caused by the development of space electric charges at splay deformations of spontaneous polarization.
*This work is supported by NSF grant ECCS-2122399 and by NASU via the project No. 0121U109816, and the Long-term program of support of the Ukrainian research teams at the Polish Academy of Sciences carried out in collaboration with the U.S. National Academy of Sciences with the financial support of external partners via the agreement No. PAN.BFB.S.BWZ.356.022.2023. The authors also acknowledge funding from the NATO SPS project G6030.
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