Ferroelectric nematic monolayer

Yuka Tabe, Takahiro Yamamoto, Isa Nishiyama, Makoto Yoneya, Hiroshi Yokoyama

Research output: Contribution to journalLetterpeer-review

8 Citations (Scopus)

Abstract

Ferroelectricity is desirable for realizing fast-response liquid crystal devices. Existing ferroelectric liquid crystals are improper with the spontaneous polarization Ps being indirectly induced by the broken centrosymmetry of molecular arrangement. We found that Langmuir monolayers of certain dialkylated nematic compound exhibit a laterally polarized two-dimensional ferroelectric nematic. The Ps is comparable to that of chiral smectic liquid crystals, and shows a fast linear electro-optic switching with a microsecond response. Estimates of electrostatic energy suggest that the ferroelectricity may be driven by the direct dipolar interactions.

Original languageEnglish
Pages (from-to)L406-L409
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume42
Issue number4 B
DOIs
Publication statusPublished - 2003 Apr 15
Externally publishedYes

Keywords

  • Achiral molecule
  • Dipolar interaction
  • Intrinsic ferroelectricity
  • Langmuir monolayer
  • Nematic liquid crystal
  • Spontaneous polarization
  • Two-dimensionality

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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