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Comparison of Different Liquid Crystal Materials under Planar and Homeotropic Boundary Conditions in Capillaries

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Chychłowski M., Ertman S., Nowinowski-Kruszelnicki E., Dąbrowski R., Woliński T.

Acta Physica Polonica A

2011

vol. 120

issue 4

582-584

We present a thermally-induced liquid crystal orientation method by applying an extra orienting layer onto an inner capillary surface that can induce either planar or homeotropic liquid crystal boundary conditions. Experimental evidence of boundary-induced orientation in two types of liquid crystal (nematic, chiral nematic) in a capillary are shown.

Scaling in 2-d Distribution of Topological Defects in a Liquid Crystal

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Massalska-Arodź M.

Acta Physica Polonica A

1998

vol. 94

issue 1

41-47

Distribution of the topological point defects observed microscopically by Nagaya, Hotta, Orihira and Ishibashi in Schlieren texture of N-(4-n-methoxy benzylidene) 4'-n'-butylaniline has been analyzed. The same fractal dimensionality D_{f}=1.4 has been estimated for several sets of defects obtained in subsequent stages of evolution of the nematic sample after the transition from the isotropic liquid phase.

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2 Acta Physica Polonica A

1 2011

1 1998

1 Chychłowski M.

1 Dąbrowski R.

1 Ertman S.

1 Massalska-Arodź M.

1 Nowinowski-Kruszelnicki E.

1 Woliński T.

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Comparison of Different Liquid Crystal Materials under Planar and Homeotropic Boundary Conditions in Capillaries

Scaling in 2-d Distribution of Topological Defects in a Liquid Crystal