Abstract
Photoalignment of nematic liquid crystals is obtained on the chalcogenide glassy thin film of As2 S3 using irradiation with polarized blue light. A uniform homogeneously aligned device is obtained with high contrast and strong anchoring. The device alignment quality is permanent as checked by following its functionality over a period of few months. The origin of the observed photoalignment is attributed to the photoinduced anisotropy in chalcogenide glasses. No differences between the different As2 S 3 film thicknesses observed, thus supporting the proposition that some orientational order is photoinduced on the surface of the glass and responsible for the photoalignment.
Original language | English |
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Article number | 071909 |
Journal | Applied Physics Letters |
Volume | 98 |
Issue number | 7 |
DOIs | |
State | Published - 14 Feb 2011 |
Keywords
- Glass
- Amorphous materials
- Thin films
- Display devices
- Geometrical optics
- Interferometry
- Liquid crystals
- Optical interference
- Optical properties
- Chemical Bonding
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)