X-Ray waveguiding studies of ordering phenomena in confined fluids
We have determined the structure of a colloidal fluid confined in a gap between two walls by making use of the waveguiding properties of the gap at x-ray wavelengths. The method is based on an analysis of the coupling of waveguide modes induced by the density variations in the confined fluid. Studies on suspensions confined within gaps of a few hundred nanometers showed strongly selective mode coupling effects, indicative of an ordering of the colloidal particles in layers parallel to the confining walls.
Zwanenburg
MJ
Van der Waals-Zeeman Instituut, University of Amsterdam, Valckenierstraat 65, 1018 XE, Amsterdam, The Netherlands.
Bongaerts
JH
Peters
JF
Riese
DO
van Der Veen JF