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

Zhuangxi Fang, Maurice C. Newstein, Bruce 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

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Guided electromagnetic wave propagation
Light scattering
Block copolymers
Thin films
Isoprene
Styrene
Diffraction gratings
Birefringence
Optics
Scattering
isoprene

ASJC Scopus subject areas

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

Cite this

Measurement and analysis of the angular guided-wave depolarized light scattering patterns from block copolymer thin films. / Fang, Zhuangxi; Newstein, Maurice C.; Garetz, Bruce; Balsara, Nitash P.

In: Macromolecules, Vol. 43, No. 23, 14.12.2010, p. 10071-10077.

Research output: Contribution to journalArticle

Fang, Zhuangxi ; Newstein, Maurice C. ; Garetz, Bruce ; Balsara, Nitash P. / Measurement and analysis of the angular guided-wave depolarized light scattering patterns from block copolymer thin films. In: Macromolecules. 2010 ; Vol. 43, No. 23. pp. 10071-10077.
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