4 papers
Packing and voids in electro-rheological structures of polarized clay particles
K. P. S. Parmar, Y. Meheust, J. O. Fossum +2
Oil suspensions of fluorohectorite clay particles exhibit a dramatic meso-structural ordering when submitted to a strong electric field. This is due to dipolar interaction between…
Inferring orientation distributions in anisotropic powders of nano-layered crystallites from a single two-dimensional WAXS image
Yves Meheust, Kenneth Dahl Knudsen, Jon Otto Fossum
The wide-angle scattering of X-rays by anisotropic powders of nano-layered crystallites (nano-stacks) is addressed. Assuming that the orientation distribution probability function…
Using synchrotron X-ray scattering to study the diffusion of water in a weakly-hydrated clay sample
Y. Meheust, B. Sandnes, G. Lovoll +6
We study the diffusion of water in weakly-hydrated samples of the smectite clay Na-fluorohectorite. The quasi one-dimensional samples are dry compounds of nano-layered particles co…
Growth activity during fingering in a porous Hele Shaw cell
Grunde Lovoll, Yves Meheust, Renaud Toussaint +2
We present in this paper an experimental study of the invasion activity during unstable drainage in a 2D random porous medium, when the (wetting) displaced fluid has a high viscosi…