Abstract
Photoalignment of nematic liquid crystals is obtained on the chalcogenide glassy thin film of As2S3
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 As2S3 film thicknesses observed, thus supporting the proposition that some orientational
order is photoinduced on the surface of the glass and responsible for the photoalignment. © 2011
American Institute of Physics
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 As2S3 film thicknesses observed, thus supporting the proposition that some orientational
order is photoinduced on the surface of the glass and responsible for the photoalignment. © 2011
American Institute of Physics
| Original language | English |
|---|---|
| Pages (from-to) | 071909 |
| Number of pages | 1 |
| Journal | Applied Physics Letters |
| Volume | 98 |
| Issue number | 7 |
| DOIs | |
| State | Published - 2011 |