Anisotropic fluctuations in ordered copolymer phases

Chuck Yeung, An Chang Shi, Jaan Noolandi, Rashmi C. Desai

Research output: Contribution to journalArticlepeer-review

58 Scopus citations


The random phase approximation is reformulated to investigate the anisotropic fluctuations about an ordered polymer phase. This very general method is applied to the lamellar phase of block copolymers. The calculated anisotropic scattering intensity captures the main features observed experimentally including the secondary peaks due to fluctuations with hexagonal symmetry. We also determined the limits of metastability of the lamellar phase as well as the bending and elastic moduli of the lamellae.

Original languageEnglish (US)
Pages (from-to)291-298
Number of pages8
JournalMacromolecular Theory and Simulations
Issue number2
StatePublished - Mar 1996

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry


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