日本液晶学会討論会講演予稿集
Online ISSN : 2432-5988
Print ISSN : 1880-3490
ISSN-L : 1880-3490
2019年日本液晶学会討論会
セッションID: 2B06
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温度勾配下におけるコレステリック液晶滴の剛体回転の直接観察
*西山 活坊野 慎治丸山 雄司多辺 由佳
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Droplets of cholesteric liquid crystals exhibit unidirectional rotation of their stripe textures when subjected to a temperature gradient perpendicular to their helical axes. The phenomenon is well-known as a typical thermomechanical cross-coupling, however, there has been an argument whether the textural rotation is ascribed to rigid-body rotation of the droplets or pure director rotation. To distinguish the two possibilities, we dispersed micron-size particles in a cholesteric-isotropic coexisting sample and visualized the flow-field by tracing the particles. The result showed that the particles adhering onto the cholesteric droplets rotated at the same angular velocity as the droplets. This observation provided a clear evidence of the rigid-body rotation of the droplet and settled the argument.

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