Abstract:
We present a surface x-ray diffraction study on the KDP-water interface
in which the structure of both the crystalline and liquid part of the interface
has been measured. We have been able to determine the ordering components
in the liquid in both the perpendicular and parallel directions. We find
interface-induced ordering in the first four layers of water molecules.
The first two layers behave icelike and are strongly bound to the surface.
The next two layers are more diffuse and show only minor lateral and perpendicular
ordering. Subsequent layers are found to behave similar to a bulk liquid.