Title page for etd-0721109-094203


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URN etd-0721109-094203
Author Chao-yi Chen
Author's Email Address m963050043@student.nsysu.edu.tw
Statistics This thesis had been viewed 5586 times. Download 3120 times.
Department Electro-Optical Engineering
Year 2008
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title The study of surface optical anisotropy of polyimide liquid crystal alignment layers by means of reflection anisotropy spectroscopy
Date of Defense 2009-06-29
Page Count 99
Keyword
  • polyimide thin film
  • reflection anisotropy spectroscopy
  • atomic force microscope
  • rubbing alignment
  • pretilt angle
  • Abstract Reflection anisotropy spectroscopy (RAS) is a non-destructive optical technique which can be used to measure the surface properties of sample. We use the technique to detect the optical anisotropy of rubbed polyimide thin film.
    Atomic force microscopy study of rubbed polyimide showed that rubbing produced microgrooves on the surface of the polyimide thin films, and the surface roughness of the polymer thin films increased slightly with the rubbing strength. Reflection anisotropy signals have been found to be generated on the surface of polyimide thin film on completion of mechanical rubbing, and will increase with an increase in the rubbing strength. We also tried to find out the correlation between RA strength of the polyimide alignment layer and pretilt angle of liquid crystal at the rubbed polyimide films.
    Advisory Committee
  • Mei-ying Chang - chair
  • Chi-huang Lin - co-chair
  • Tsung-hsien Lin - co-chair
  • Wen-jun Zheng - advisor
  • Files
  • etd-0721109-094203.pdf
  • indicate access worldwide
    Date of Submission 2009-07-21

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