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Characterization of the Photo-Alignment Material SD-1/SDA-2 with Spectroscopic Ellipsometry
Dalarna University, Borlänge, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Applied Optics . Linköping University, The Institute of Technology.ORCID iD: 0000-0001-9229-2028
Hong Kong University of Science and Technology, Kowloon, Hong Kong .
Hong Kong University of Science and Technology, Kowloon, Hong Kong .
2007 (English)In: 14th  International Display Workshops, 2007, 2007, 391-394 p.Conference paper, Published paper (Other academic)
Abstract [en]

Variable angle spectroscopic ellipsometry (VASE) is applied for investigation of the azo-dye SD-1/SDA-2 which are used for photoalignment of liquid crystals. The azo-dye was spin coated on silicon substrates. Samples as prepared as well as samples illuminated with polarized UV light were studied. The measured optical constants were modelled with an ensemble of the Lorentz oscillators. The results confirm the reorientation mechanism of the photo-induced order formation in the azo-dye films under the action of polarized light, and also show that there exist some photochemical processes.

Place, publisher, year, edition, pages
2007. 391-394 p.
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:liu:diva-91916OAI: oai:DiVA.org:liu-91916DiVA: diva2:619593
Conference
14th International Display Workshops (IDW 2007), 5 December 2007, Sapporo, Japan
Available from: 2013-05-05 Created: 2013-05-05 Last updated: 2013-10-14Bibliographically approved

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Valyukh, IrynaArwin, HansValyukh, Sergiy

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