Measurement and analysis of the angular guided-wave depolarized light scattering patterns from block copolymer thin films

Zhuangxi Fang, Maurice C. Newstein, Bruce A. Garetz, Nitash P. Balsara

Research output: Contribution to journalArticle

Abstract

We have measured and analyzed the angular scattering patterns in guided-wave depolarized light scattering (GWDLS) from 500 nm thick diblock copolymer thin films of poly(styrene-block-isoprene) using diffraction grating couplers. The measured pattern is decomposed into the sum of contributions from ordered grains and grating birefringence. Measured patterns are well fitted using a grain model consisting of disks lying in the film plane with elliptical cross sections, randomly oriented optic axes, and variable-length major axes.

Original languageEnglish (US)
Pages (from-to)10071-10077
Number of pages7
JournalMacromolecules
Volume43
Issue number23
DOIs
StatePublished - Dec 14 2010

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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