Synthesis of a zero-birefringence polymer by doping with a nano-size birefringent crystal

Hisanori Ohkita, Akihiro Tagaya, Yasuhiro Koike

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


We reported the "birefringent crystal dopant method" in order to compensate the orientational birefringence of polymers for optical devices. In this method, a birefringent inorganic crystal which has rod-like shape is homogeneously doped into a polymer and it compensates the orientational birefringence of the polymer. Strontium carbonate (SrCO3) was selected for this purpose because it has a large birefringence and a rod-like shape. SrCO3 was synthesized and doped into a poly(MMA/BzMA=78/22(wt/ wt)) (78/22 polymer) film and a cycloolefin polymer film and the films were drawn above glass transition temperature (Tg). The orientational birefringence of the drawn film at a wavelength of 633 nm was compensated and reduced by doping with SrCO3. Furthermore, we analyzed the transparency and thermostability of the films.

Original languageEnglish
Title of host publicationOrganic Photonic Materials and Devices VIII
Publication statusPublished - 2006 May 23
EventOrganic Photonic Materials and Devices VIII - San Jose, CA, United States
Duration: 2006 Jan 232006 Jan 26

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherOrganic Photonic Materials and Devices VIII
Country/TerritoryUnited States
CitySan Jose, CA

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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