Dynamics of nano-meter-sized domains on a vesicle

Y. Sakuma, N. Urakami, Y. Ogata, M. Nagao, S. Komura, M. Imai

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

Abstract

We have investigated the dynamics of nano-meter-sized domains on a vesicle composed of saturated phospholipids, unsaturated phospholipids and cholesterols by means of a neutron spin echo technique. The diffusion coeffisient of the domains obtained from the intermediate scattering function is about two orders of magnitude larger than that calculated by Saffman and Delbrück law. From molecular dynamics simulations we found another type of the domain dynamics where the domains are agitated by thermal fluctuation and repeats coalescence and rupture. The relaxation rate of the new mode is about two orders of magnitude larger than that of the diffusion mode. The coalescence and rupture mode of domains may be responsible for the observed domain dynamics.

Original languageEnglish
Title of host publicationComplex Systems - 5th International Workshop on Complex Systems
Pages717-720
Number of pages4
DOIs
Publication statusPublished - 2008 Mar 13
Externally publishedYes
Event5th International Workshop on Complex Systems - Sendai, Japan
Duration: 2007 Sep 252007 Sep 28

Publication series

NameAIP Conference Proceedings
Volume982
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other5th International Workshop on Complex Systems
CountryJapan
CitySendai
Period07/9/2507/9/28

Keywords

  • Domain dynamics
  • Lipid raft
  • Nano-meter-sized domain
  • Neutron spin echo
  • Small unilamellar vesicle

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Sakuma, Y., Urakami, N., Ogata, Y., Nagao, M., Komura, S., & Imai, M. (2008). Dynamics of nano-meter-sized domains on a vesicle. In Complex Systems - 5th International Workshop on Complex Systems (pp. 717-720). (AIP Conference Proceedings; Vol. 982). https://doi.org/10.1063/1.2897885