著者
Hishida M Tanaka K
出版者
IOP Publishing
雑誌
Journal of physics. Condensed matter (ISSN:09538984)
巻号頁・発行日
vol.24, no.28, pp.284113, 2012-07
被引用文献数
22

What role does water play in the self-assembly of soft materials? To understand the correlation between the hydration state and the various self-assembled structures of a nonionic surfactant, terahertz time-domain spectroscopy has been performed for a C(12)E(5) solution with complementary use of small-angle x-ray scattering. Precise observations of the hydration state show clearly that transitions of the hydration state are accompanied by structural phase transitions of the surfactant from hexagonal to micelle to lamellae. These transitions of hydration state suggest that water is not a homogeneous solvent, and the interaction between water and the soft material is important for self-assembly.
著者
Mizuseki H. Tanaka K. Ohno K. Kawazoe Y.
出版者
東北大学
雑誌
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy (ISSN:00408808)
巻号頁・発行日
vol.43, no.1, pp.55-59, 1997-03-20

A new Monte Carlo model is introduced to describe the Diffusion-Limited Aggregation (DLA) with extra forces arising from the Lorentz's and/or Coulomb forces. Specific patterns grown under the external force are produced by Monte Carlo simulation. In the present model, the basic movement of particles is the random walk, with different transition probabilities in different directions, which characterize stochastically the effect of the extra forces. In some cases, pattern-formations which are qualitatively different from the standard DLA model are observed and they are compared with preexisting experiments.fractal dimensionDiffusion-Limited Aggregation (DLA)magnetic fieldcrystal growthcomputer simulationrandom walkMonte Carlo method