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Continuous liquid crystal pretilt control through textured substrates
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10.1063/1.1833552
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    Affiliations:
    1 Department of Physics and Institute of Nano Science and Technology, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
    2 Department of Electrical and Electronics, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
    3 Department of Physics and Institute of Nano Science and Technology, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
    a) Electronic mail: phtsui@ust.hk
    Appl. Phys. Lett. 85, 5556 (2004); http://dx.doi.org/10.1063/1.1833552
/content/aip/journal/apl/85/23/10.1063/1.1833552
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View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color) (a) Schematic of a square inhomogeneous alignment pattern with adjacent domains preferring orthogonal alignment directions. (b) A sketch of the planar LC configuration on inhomogeneous alignment pattern as that in (a) (left) above and (right) below the transition period for LC pretilt jump. (c) Optical images of the LC cells, made of checkerboard grooved patterns with varied from , between crossed polarizers. The double-headed arrows indicate the orientations of the polarizer (along ) and analyzer (along ). The patterns are mostly in size. The quoted values of and were deduced by model-fitting the normalized reflection spectra of each cell.

Image of FIG. 2.
FIG. 2.

Normalized reflection spectra of the and cells. Solid lines are measurements. Dashed lines are simulations. The entrance polarizer was along during measurement.

Image of FIG. 3.
FIG. 3.

Plot of LC pretilt against groove depth. Solid circles are data. Dashed line is obtained by calculations with the frustrated boundary model assuming the azimuthal surface energy to vary as (see Ref. 5 for details).

Image of FIG. 4.
FIG. 4.

Surface potentials of uniform LC states, , on checkerboard grooved patterns with different groove depths obtained from Eq. (1) assuming , , and at , and . The arrows indicate the minimum of the curves.

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/content/aip/journal/apl/85/23/10.1063/1.1833552
2004-12-08
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Continuous liquid crystal pretilt control through textured substrates
http://aip.metastore.ingenta.com/content/aip/journal/apl/85/23/10.1063/1.1833552
10.1063/1.1833552
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