Fluid Layered Ferroelectrics with Global C∞v Symmetry

Hirotsugu Kikuchi, Hiroyuki Matsukizono, Koki Iwamatsu, Sota Endo, Shizuka Anan, Yasushi Okumura

研究成果: ジャーナルへの寄稿学術誌査読

23 被引用数 (Scopus)


Ferroelectricity in fluid materials, which allows free rotation of molecules, is an unusual phenomenon raising cutting-edge questions in science. Conventional ferroelectric liquid crystals have been found in phases with low symmetry that permit the presence of spontaneous polarization. Recently, the discovery of ferroelectricity with high symmetry in the nematic phase has attracted considerable attention. However, the physical mechanism and molecular origin of ferroelectricity are poorly understood and a large domain of macroscopically oriented spontaneous polarization is difficult to fabricate in the ferroelectric nematic phase. This study reports new fluid layered ferroelectrics with the C∞v symmetry in which nearly complete orientation of the spontaneous polarization remains stable under zero electric field without any orientation treatment. These ferroelectrics are obtained by simplifying the molecular structure of a compound with a known ferroelectric nematic phase, although the simplification reduced the dipole moment. The results provide useful insights into the mechanism of ferroelectricity due to dipole–dipole interactions in molecular assemblies. The new ferroelectric materials are promising for a wide range of applications as soft ferroelectrics.

ジャーナルAdvanced Science
出版ステータス出版済み - 9月 15 2022

!!!All Science Journal Classification (ASJC) codes

  • 医学(その他)
  • 化学工学一般
  • 材料科学一般
  • 生化学、遺伝学、分子生物学(その他)
  • 工学一般
  • 物理学および天文学一般


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