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Ultraweak azimuthal anchoring of a nematic liquid crystal on a planar orienting photopolymer
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View: Figures


Image of FIG. 1.
FIG. 1.

Typical -wall connecting two disclinations and parametrization of the director field.

Image of FIG. 2.
FIG. 2.

(Color online) Transmitted intensity under crossed polarizers at and . Crosses are experimental values. Full and dashed lines correspond, respectively, to the best fit with Eq. (4) and to a plot with .

Image of FIG. 3.
FIG. 3.

(Color online) Zenithal anchoring torque vs the zenithal angle . Dots are experimental values (irrelevent below 45°), and full line is the best fit with the Rapini-Papoular expression.

Image of FIG. 4.
FIG. 4.

(Color online) Azimuthal anchoring extrapolation lenght of NOA60 vs UV exposure dose at . The error bar represents the dispersion of experimental values: different regions on the same cell.

Image of FIG. 5.
FIG. 5.

-wall at different temperatures [(a) , (b) , and (c) ].

Image of FIG. 6.
FIG. 6.

(Color online) Variations of the azimuthal anchoring extrapolation lenght of NOA60 with the temperature for different exposure doses .

Image of FIG. 7.
FIG. 7.

Variations of the surface pattern with the exposure time to magnetic field , with [(a) , (b) , and (c) ].

Image of FIG. 8.
FIG. 8.

(Color online) Zenithal anchoring extrapolation length of NOA60 at . Error bars indicate the dispersion of experimental values.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultraweak azimuthal anchoring of a nematic liquid crystal on a planar orienting photopolymer