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Article Dans Une Revue Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Année : 2006

Dynamics of bulk fluctuations in a lamellar phase studied by coherent X-ray scattering

Résumé

Using X-ray photon correlation spectroscopy, we studied the layer fluctuations in the lamellar phase of an ionic lyotropic system. We measured the relaxation rate of in-plane (undulation) fluctuations as a function of the wave vector. Static and dynamic results obtained during the same experiment were combined to yield the values of both elastic constants of the lamellar phase (compression and bending moduli) as well as that of the sliding viscosity. The results are in very good agreement with dynamic light scattering data, validating the use of the technique in ordered phases.
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Dates et versions

hal-00096045 , version 1 (18-09-2006)

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Doru Constantin, Guillaume Brotons, Tim Salditt, Eric Freyssingeas, Anders Madsen. Dynamics of bulk fluctuations in a lamellar phase studied by coherent X-ray scattering. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2006, 74, pp.031706. ⟨10.1103/PhysRevE.74.031706⟩. ⟨hal-00096045⟩
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