Alignment of reactive LC mesogen by relief diffraction grating

DOIResolve DOI: http://doi.org/10.1117/12.467456
AuthorSearch for: ; Search for: ; Search for: ; Search for:
TypeArticle
Proceedings titleLiquid Crystal Materials, Devices, and Applications VIII
Series titleProceedings of SPIE; no. 4658
ConferenceLiquid Crystal Materials, Devices, and Applications VIII, January 19th 2002, San Jose CA, USA
Pages137141
AbstractIt is demonstrated experimentally that an efficient alignment of a reactive liquid crystal (LC) mesogen is achievable by employing a relief diffraction grating having a pitch smaller than the correlation length of the LC mesogen. Full alignment of the reactive LC mesogen using a 500 lines/mm diffraction grating is confirmed by polarization microscopy. A grating of 200 lines/mm exhibited partial alignment in the deepest regions of the groove. Alignment was not maintained in areas closer to the relief profile peaks of the periodic structure (which caused the spatial modulation of the alignment to occur). UV exposure of the aligned layer allowed to permanently fix the alignment due to polymerization of the unsaturated acrylate bonds. We estimate the correlation length of the reactive mesogen from this experiment to be 5 micrometers <(kappa) <2 micrometers.
Publication date
PublisherSPIE
LanguageEnglish
AffiliationNational Research Council Canada
Peer reviewedYes
NPARC number21272323
Export citationExport as RIS
Report a correctionReport a correction
Record identifierd85a85a2-e1e5-4d03-8cbd-fe70e7370406
Record created2014-11-21
Record modified2017-09-13
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)