Exponential vs Gaussian Correlation Functions in the Characterization of Block Copolymer Grain Structure by Depolarized Light Scattering

Xin Wang, Jacob L. Thelen, Xiuhong Li, Nitash P. Balsara, Bruce A. Garetz

Research output: Contribution to journalArticlepeer-review

Abstract

Block copolymer (BCP) grain structure affects the mechanical, optical, and electrical properties of BCP materials, making the accurate characterization of this grain structure an important goal. In this study, improved BCP grain parameters were obtained by employing an exponentially decaying correlation function within the ellipsoidal grain model, instead of the Gaussian correlation function that was used in previous work. The exponential correlation function provides a better fit to the experimental depolarized light scattering data, which outweighs the disadvantage that it requires numerical integration to obtain the model scattered intensity.

Original languageEnglish (US)
Pages (from-to)54-62
Number of pages9
JournalMacromolecules
Volume57
Issue number1
DOIs
StatePublished - Jan 9 2024

ASJC Scopus subject areas

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

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