Microscopic characterisation of self-assembled colloidal particles in electrohydrodynamic convection of a low-birefringence nematic liquid crystal

Yoriaki Nishioka, Fumiaki Kobayashi, Nobutaka Sakurai, Yuji Sasaki, Hiroshi Orihara

研究成果: ジャーナルへの寄稿学術誌査読

6 被引用数 (Scopus)

抄録

ABSTRACT: Electrokinetics of small particles immersed in anisotropic fluids is attracting attention in recent years. Here we focus on microscopic appearance of single as well as self-assembled particles moving in the electrohydrodynamic convection (EHC) of a nematic liquid crystal with low birefringence. Characterisation of the birefringent properties is made by polarised light microscopy under different illumination conditions. Because of the small optical anisotropy, the director distortion around the particles clearly exhibits distinctive colours on both sides depending on the height in the cell. The observation can be explained as the change in the net phase retardation of the light. It is also found that a caterpillar-like motion is possible by tuning temperature, although the horizontal size of the EHC rolls is relatively narrow.

本文言語英語
ページ(範囲)427-435
ページ数9
ジャーナルLiquid Crystals
43
4
DOI
出版ステータス出版済み - 3月 15 2016
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 化学一般
  • 材料科学一般
  • 凝縮系物理学

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