Documentation scienceplus.abes.fr version Bêta

À propos de : Phonon Propagation in Ordered Diblock Copolymer Solutions        

AttributsValeurs
type
Is Part Of
Subject
Title
  • Phonon Propagation in Ordered Diblock Copolymer Solutions
has manifestation of work
related by
Author
Abstract
  • High-resolution inelastic light scattering was employed to measure the dispersion relationsfor the acoustic excitations in ordered concentrated solutions of poly(styrene)-block-poly(isoprene)copolymers with both symmetric and asymmetric composition and large spacing (220−415 nm). Themorphology is manifested in the rich phonon spectrum recorded for different scattering wave vectors qin the range 0.003−0.034 nm-1. The experimental ωs(q) of the sth branch is directly compared with thetheoretical dispersion from band structure calculations performed for different directions of q in thereciprocal lattice of lamellar and cylindrical periodic structures. The dispersion relations turn out to bea sensitive index of the microphase morphology and the grain orientation.
article type
is part of this journal



Alternative Linked Data Documents: ODE     Content Formats:       RDF       ODATA       Microdata