Coupling between phase separation and surface deformation modes in self-organizing polymer blend films

Brett D. Ermi, Giovanni Nisato, Jack F. Douglas, John A. Rogers, Alamgir Karim

Research output: Contribution to journalArticle

Abstract

Phase separation of ultrathin polymer blend films spun cast onto patterned self-assembled monolayers is examined by atomic force microscopy. Fourier transform analysis of the time evolution of the film topography reveals a coupling between the phase separation process and the surface deformation modes of the blend film. Excitation of these surface modes occurs when the scales of the phase separation coarsening and the deformation modes become commensurate. These excitations decay with time, leadine to a structure where only the fundamental mode has aooreciable amplitude.

Original languageEnglish (US)
Pages (from-to)3900-3903
Number of pages4
JournalPhysical review letters
Volume81
Issue number18
DOIs
StatePublished - Nov 2 1998

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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