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Revealing the uniaxial to biaxial nematic liquid crystal phase transition via distinctive electroconvection
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10.1063/1.3138867
/content/aip/journal/apl/94/19/10.1063/1.3138867
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/19/10.1063/1.3138867
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Temperature dependence of onset voltages for the PW1 and PW2 regimes . A, P, and rubbing in the photographs refer to the analyzer, polarizer, and rubbing direction of the LC device, respectively. The letters on the photographs refer to the conditions shown on the graph. The data show that onset voltage of PW1 appears to diverge near the transition temperature and that PW1 and PW2 can coexist when the applied voltage approaches the onset voltage of PW2. It is worth noting that close to , the patterns shown in (a) and (b) become rather indistinct as the EC regimes converge.

Image of FIG. 2.
FIG. 2.

The temperature dependence of components of the conductivity tensor measured for . is the conductivity of compound 1 at (isotropic phase). is the cell plane and is normal to the cell. Three different components were measured using different electrode geometries (parallel plate, giving , and two orthogonally rubbed in-plane geometry devices, giving and ), and normalized to in the isotropic phase.

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/content/aip/journal/apl/94/19/10.1063/1.3138867
2009-05-14
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Revealing the uniaxial to biaxial nematic liquid crystal phase transition via distinctive electroconvection
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/19/10.1063/1.3138867
10.1063/1.3138867
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