Ferroelectric columnar liquid crystal featuring confined polar groups within core-shell architecture

Daigo Miyajima, Fumito Araoka, Hideo Takezoe, Jungeun Kim, Kenichi Kato, Masaki Takata, Takuzo Aida

Research output: Contribution to journalArticle

117 Citations (Scopus)

Abstract

Ferroelectric liquid crystals are materials that have a remnant and electrically invertible polar order. Columnar liquid crystals with a ferroelectric nature have potential use in ultrahigh-density memory devices, if electrical polarization occurs along the columnar axis. However, columnar liquid crystals having an axial nonzero polarization at zero electric field and its electrical invertibility have not been demonstrated. Here, we report a ferroelectric response for a columnar liquid crystal adopting a core-shell architecture that accommodates an array of polar cyano groups confined by a hydrogen-bonded amide network with an optimal strength. Under an applied electric field, both columns and core cyano groups align unidirectionally, thereby developing an extremely large macroscopic remnant polarization.

Original languageEnglish
Pages (from-to)209-213
Number of pages5
JournalScience
Volume336
Issue number6078
DOIs
Publication statusPublished - 2012 Apr 13
Externally publishedYes

ASJC Scopus subject areas

  • General

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