Direct observation of rigid-body rotation of cholesteric droplets subjected to a temperature gradient

Katsu Nishiyama, Shinji Bono, Yuji Maruyama, Yuka Tabe

研究成果: Article

1 引用 (Scopus)

抄録

Droplets of cholesteric liquid crystals rotate their helical structure when subjected to a thermal gradient perpendicular to their helical axes. Concerning the interpretation of their dynamics, there has been an argument whether the textural rotation indicates rigid-body rotation of the droplets or pure director rotation. To clarify this, we dispersed micron-size particles in a cholesteric-isotropic coexisting sample and traced their motion, and found that the particles adhering onto a cholesteric droplet rotated together with the helix in phase. This observation provided clear evidence of the rigid-body rotation of the droplet, and we also revealed an unusual hydrodynamic flow in the coexisting phase.

元の言語English
記事番号063601
ジャーナルjournal of the physical society of japan
88
発行部数6
DOI
出版物ステータスPublished - 2019 1 1

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rigid structures
temperature gradients
helices
liquid crystals
hydrodynamics
gradients

ASJC Scopus subject areas

  • Physics and Astronomy(all)

これを引用

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AB - Droplets of cholesteric liquid crystals rotate their helical structure when subjected to a thermal gradient perpendicular to their helical axes. Concerning the interpretation of their dynamics, there has been an argument whether the textural rotation indicates rigid-body rotation of the droplets or pure director rotation. To clarify this, we dispersed micron-size particles in a cholesteric-isotropic coexisting sample and traced their motion, and found that the particles adhering onto a cholesteric droplet rotated together with the helix in phase. This observation provided clear evidence of the rigid-body rotation of the droplet, and we also revealed an unusual hydrodynamic flow in the coexisting phase.

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