Polar Switching in a Lyotropic Columnar Nematic Liquid Crystal Made of Bowl-Shaped Molecules.
Adv Mater
; 27(29): 4280-4, 2015 Aug 05.
Article
em En
| MEDLINE
| ID: mdl-26078047
ABSTRACT
A polar response in a lyotropic columnar nematic material is reported. The material accommodates bowl-shaped molecules with strong axial dipole moments in column segments without head-to-tail invariance. Optical second-harmonic-generation methods confirm that the nematic columns align unidirectionally under an applied electric field and the material develops remnant macroscopic polarization observable for hours. The switching takes place by a flip of the columns.
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MEDLINE
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En
Ano de publicação:
2015
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Article