Slow dynamics of surfactant micelles in fluid and crystal phases

M. Imai, M. Kurimoto, F. Matsuura, Y. Sakuma

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have investigated diffusion of spherical surfactant micelles in fluid and crystal phases. The short-time and the long-time collective diffusions of spherical micelles were addressed by a neutron spin echo (NSE) and a dynamical light scattering (DLS) technique. In the fluid phase, the first-order virial coefficients of the normalized short-time collective diffusion coefficients agreed with those of the hard spheres, whereas the long-time collective diffusion coefficient exhibited the characteristic slowing down toward the fluid-HCP transition. At the fluid-HCP transition, the short-time diffusion coefficient increased abruptly, indicating increase of the effective free volume available for the micelles. Simultaneously, we observed a very slow mode characteristic of the crystal phases, suggesting hopping of micelles among the lattice sites.

Original languageEnglish
Title of host publication4th International Symposium on Slow Dynamics in Complex Systems
Subtitle of host publicationKeep Going Tohoku
Pages758-765
Number of pages8
DOIs
Publication statusPublished - 2013 Mar 12
Event4th International Symposium on Slow Dynamics in Complex Systems: Keep Going Tohoku - Sendai, Japan
Duration: 2012 Dec 22012 Dec 7

Publication series

NameAIP Conference Proceedings
Volume1518
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other4th International Symposium on Slow Dynamics in Complex Systems: Keep Going Tohoku
CountryJapan
CitySendai
Period12/12/212/12/7

Keywords

  • fluid-crystal transition
  • long-time diffusion coefficient
  • short-time diffusion coefficient
  • surfactant micelles

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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