TY - JOUR
T1 - Polymer-Dispersed Cholesteric Liquid Crystal under Homeotropic Anchoring
T2 - Electrically Induced Structures with λ1/2-Disclination
AU - Gardymova, Anna P.
AU - Krakhalev, Mikhail N.
AU - Rudyak, Vladimir Yu
AU - Barbashov, Vadim A.
AU - Zyryanov, Victor Ya
N1 - Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2022/4/1
Y1 - 2022/4/1
N2 - Orientational structures of polymer-dispersed cholesteric liquid crystal under homeotropic anchoring and their transformations under the action of an electric field are studied. The switching of cholesteric droplets between different topological states are experimentally and theoretically demonstrated. Structures with λ+1/2-disclination are found and considered. These structures are formed during the transformation of a twisted toroidal configuration induced by a decrease in the electric field when a relative chiral parameter N0 > 6.3. The transformation of the initial structure with a bipolar distribution of the helix axis into a twisted toroidal configuration and then into a structure with λ+1/2-disclination is investigated in detail. The behavior of these structures under the influence of an external electric field, as well as the appearance of structures with λ−1/2-disclination, are studied. Obtained results are promising for the development of optical materials with programmable properties.
AB - Orientational structures of polymer-dispersed cholesteric liquid crystal under homeotropic anchoring and their transformations under the action of an electric field are studied. The switching of cholesteric droplets between different topological states are experimentally and theoretically demonstrated. Structures with λ+1/2-disclination are found and considered. These structures are formed during the transformation of a twisted toroidal configuration induced by a decrease in the electric field when a relative chiral parameter N0 > 6.3. The transformation of the initial structure with a bipolar distribution of the helix axis into a twisted toroidal configuration and then into a structure with λ+1/2-disclination is investigated in detail. The behavior of these structures under the influence of an external electric field, as well as the appearance of structures with λ−1/2-disclination, are studied. Obtained results are promising for the development of optical materials with programmable properties.
KW - electric field-induced transformation
KW - metastable state
KW - orientational structure
KW - polymer-dispersed cholesteric liquid crystal
KW - topological defect
UR - http://www.scopus.com/inward/record.url?scp=85128274683&partnerID=8YFLogxK
U2 - 10.3390/polym14071454
DO - 10.3390/polym14071454
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:85128274683
SN - 2073-4360
VL - 14
JO - Polymers
JF - Polymers
IS - 7
M1 - 1454
ER -