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11 Result(s)

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  1. No Access

    Article

    Confined diffusion of hydrophilic probes inserted in lyotropic lamellar phases

    The dynamic behaviour of three hydrophilic probes (two dyes and one fluorescently-labelled protein) inserted in the water layers of lyotropic lamellar phases has been studied by confocal fluorescence recovery ...

    P. Moreau, D. van Effenterre, L. Navailles, F. Nallet… in The European Physical Journal E (2008)

  2. No Access

    Article

    Role of dislocation loops on the elastic constants of lyotropic lamellar phases

    We study the role of dislocation loops defects on the elasticity of lamellar phases by investigating the variation of the lamellar elastic constants, ¯ and K, induced by the proliferation of these defects. We foc...

    E. Freyssingeas, A. Martin, D. Roux in The European Physical Journal E (2005)

  3. No Access

    Article

    Incorporating DNA in a lamellar phase: A Flory model

    Following an experimental work demonstrating that DNA pieces can be incorporated in large quantity in a neutral lamellar phase, we propose a theoretical model showing that finite-size rod-like particles can be...

    A. Colin, D. Roux in The European Physical Journal E (2002)

  4. No Access

    Article

    Anomalous elasticity of an ordered lamellar liquid foam

    We investigate experimentally the linear viscoelastic properties of a lamellar liquid foam as a function of the cell size and spatial organisation. The system consists of multilamellar vesicles generated by a ...

    J. Leng, F. Nallet, D. Roux in The European Physical Journal E (2001)

  5. No Access

    Article

    Swelling kinetics of a compressed lamellar phase

    We investigate how multilamellar vesicles prepared in a compressed state under flow return to equilibrium. The kinetics is studied by following the temporal evolution of the viscoelasticity after the shear is ...

    J. Leng, F. Nallet, D. Roux in The European Physical Journal E (2001)

  6. No Access

    Article

    Lamellar-to-nematic phase transition in a lipid-surfactant mixture

    A lyotropic system, consisting of a lecithin (DMPC) and a non-ionic surfactant (C12E5) in water was studied. The system exhibits a lamellar-to-nematic phase transition. The nematic phase appears as the temperatur...

    O. Dhez, S. König, D. Roux, F. Nallet, O. Diat in The European Physical Journal E (2000)

  7. No Access

    Article

    Undulation instability under shear: A model to explain the different orientations of a lamellar phase under shear?

    We study the effects of a dilation on a sheared smectic A phase. Through a linear analysis, we show that undulation may grow in the direction of the flow and of the vorticity as found in previous works. At hig...

    A.S. Wunenburger, A. Colin, T. Colin, D. Roux in The European Physical Journal E (2000)

  8. No Access

    Article

    A dynamic study of onion phases under shear flow: size changes

    It has been shown that lyotropic lamellar phases under shear flow form structures corresponding to a close packed assembly of monodisperse multilamellar vesicles (onions). The size, which is fixed by the shear...

    P. Panizza, A. Colin, C. Coulon, D. Roux in The European Physical Journal B - Condense… (1998)

  9. No Access

    Chapter

    Field Variables and Critical Phenomena in Microemulsions

    Some general features of field variables and critical phenomena in multicomponent systems are discussed. Critical behavior of surfactants in solution is specially examined, and results for a ternary system com...

    D. Roux, A. M. Bellocq in Micellar Solutions and Microemulsions (1990)

  10. No Access

    Chapter

    Defects in Lamellar Phases of Amphiphile-Water Systems

    The lamellar phase of an amphiphile-water system is composed of alternating, stacked, infinite domains of bilayer and water. These bilayers or membranes have been traditionally thought to be continuous and hom...

    C. K. Bagdassarian, D. Roux, A. Ben-Shaul, W. M. Gelbart in Correlations and Connectivity (1990)

  11. No Access

    Chapter and Conference Paper

    The Sponge State: A Striking Isotropic Liquid Phase

    Surfactants in solution may associate into two-dimensional aggregates (membranes) which self-organize either in liquid crystalline phases or, more surprisingly, in a liquid isotropic phase made of connected bi...

    D. Roux, M. E. Cates in Dynamics and Patterns in Complex Fluids (1990)