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Spatial and orientational control of liquid crystal alignment using a surface localized polymer layer
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10.1063/1.4773010
/content/aip/journal/apl/101/25/10.1063/1.4773010
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/25/10.1063/1.4773010
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Figures

Image of FIG. 1.
FIG. 1.

Method for the spatial control of the pretilt angle: (a) Planar cell filled with LC-RM mixture; (b) LC-RMs mixture separation in the external electric field (pre-cure voltage); (c) formation of the polymer layer in the vicinity of the LC cell substrates by local UV light-induced polymerization (UV curing); (d)cell with spatially varied pretilt after curing.

Image of FIG. 2.
FIG. 2.

The angle of the director to the cell surface as a function of applied voltage and distance from the surface.

Image of FIG. 3.
FIG. 3.

Dependency of pretilt angle on the duration of the polymerization step for different voltages applied during polymerization.

Image of FIG. 4.
FIG. 4.

Dependency of pretilt angles on the duration of the polymerization step for different frequencies when 80 V AC is applied during polymerization.

Image of FIG. 5.
FIG. 5.

Microphotographs of cells which were pre-cured for 5 min at 100 V 60 Hz AC,and cured at 100 V 60 Hz AC through a0.2 mm slit for 10 min. (a) Cured under 3.5 mW/cm2. (b) Cured under 28 mW/cm2.

Image of FIG. 6.
FIG. 6.

Optical characterization of the LC cell with patterned variable pretilt angles. (a) Image of the cured area under monochromatic light; (b) pretilt angles across the cured area.

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/content/aip/journal/apl/101/25/10.1063/1.4773010
2012-12-21
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Spatial and orientational control of liquid crystal alignment using a surface localized polymer layer
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/25/10.1063/1.4773010
10.1063/1.4773010
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