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A New Class of Chiral Nematic Phase with Helical Polar Order (Adv. Mater. 35/2021)
Author(s) -
Nishikawa Hiroya,
Araoka Fumito
Publication year - 2021
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202170270
Subject(s) - liquid crystal , polar , materials science , helix (gastropod) , phase (matter) , biaxial nematic , condensed matter physics , symmetry (geometry) , order (exchange) , optics , degeneracy (biology) , physics , optoelectronics , geometry , quantum mechanics , bioinformatics , ecology , mathematics , finance , snail , economics , biology
Liquid Crystals A new class of cholesteric phase with local polar order is realized by Fumito Araoka and Hiroya Nishikawa in article number 2101305. In general, the periodicity of the conventional cholesteric liquid crystal corresponds to the half‐pitch of the helix, having head‐and‐tail symmetry in the local nematic director. On the other hand, the newly found polar cholesteric liquid crystal is characterized with a full‐pitch periodicity of the helix due to the polar degeneracy in the local nematic director. This delivers some unprecedented properties, such as fast electro‐optic response based on the photonic band modulated with polar helix deformation.