Fluctuations of cubic network observed in non-ionic surfactant system

M. Imai, T. Kato, D. Schneider

Research output: Contribution to journalArticlepeer-review


We have investigated the stability of a cubic lattice having a periodic-minimal surface in a non-ionic surfactant system using a time-resolved small-angle neutron-scattering technique. The cubic lattice transformed from a hexagonal phase showed a polycrystalline scattering pattern and strong intensity fluctuation as a function of time. A characteristic correlation time of the intensity fluctuation obtained by time correlation function analysis was about 150 min. In the case of the cubic lattice from a lamellar phase the diffraction peaks showed monocrystalline-like pattern and no intensity fluctuation. We consider that the fluctuations arise from the polycrystalline cubic network trapped in a metastable state. In other words, the cubic phase from the hexagonal phase is in an incubation time of finite-to-infinite transition of the cubic network.

Original languageEnglish
Pages (from-to)64-69
Number of pages6
JournalProgress in Colloid and Polymer Science
Publication statusPublished - 1997


  • Cubic phase
  • Incubation time
  • Infinite periodic minimal surface
  • Phase transition
  • Surfactant


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