Related Experiment Video
Updated: Sep 2, 2026

Measuring Material Microstructure Under Flow Using 1-2 Plane Flow-Small Angle Neutron Scattering
Published on: February 6, 2014
Conductivity of an inverse lyotropic lamellar phase under shear flow
P Panizza1, L Soubiran, C Coulon
1CPMOH, Université Bordeaux-1, 351 cours de la Libération, 33400 Talence, France. ppanizza@cribx1.u-bordeaux.fr
Abstract:
We report conductivity measurements on solutions of closed compact monodisperse multilamellar vesicles (the so-called "onion texture") formed by shearing an inverse lyotropic lamellar L(alpha) phase. The conductivity measured in different directions as a function of the applied shear rate reveals a small anisotropy of the onion structure due to the existence of free oriented membranes. The results are analyzed in terms of a simple model that allows one to deduce the conductivity tensor of the L(alpha) phase itself and the proportion of free oriented membranes. The variation of these two parameters is measured along a dilution line and discussed. The high value of the conductivity perpendicular to the layers with respect to that of solvent suggests the existence of a mechanism of ionic transport through the insulating solvent.
Related Concept Videos
Laminar and Turbulent Flow
Viscosity
The SI unit of viscosity is...
Viscosity of Fluid
Types of Fluids
In contrast, non-Newtonian fluids do not follow Newton's law of viscosity, and their...
Steady, Laminar Flow Between Parallel Plates
Couette Flow

