Phenomena surrounding the wetting of natural or artificial topographically patterned surfaces are found systems associated with the diverse fields of chemical engineering, biology, geology and advanced materials, amongst others. When the surface features are of a certain (nano-) size or shape and composition, it is possible for the textured surface to become ¿superhydrophobic¿ or ¿superhydrophilic¿. Whilst contact angle measurements are typically used to infer details about the structure at the solvent/substrate interface, these depend on the model used. They are not a direct indication of the presence, or absence of pockets of air beneath the solvent that may be localised around topographical features. In this proposal we seek to use NR to establish how the presence of any air cushion is dependent on the pressure applied to solvent layer, and thus persists in different environments.