Abstract: A method is provided for applying a reactive aldehyde containing coating to a substrate. The method includes subjecting a substrate to a plasma discharge in the presence of a compound of formula (I): Where X is an optionally substituted straight or branched alkylene chain(s) or aryl group(s); R1, R2 or R3 are optionally substituted hydrocarbyl or heterocyclic groups, and m is an integer greater than 0.

Abstract: The invention relates to the provision of an article and a method of forming an article with a surface which can have at least one sub-layer and a top layer of material. At least one part of the top layer is selectively removed to expose at least one sub-layer and/or the surface of the substrate and allow the functionality of the sub-layer and/or surface to be utilised in the area(s) where it is exposed. The top layer, where it remains, acts as a barrier to the sub-layer and/or surface being exposed to the surrounding environment. Typically parts of the top layer are removed in a patterned manner to provide a series of predefined areas at which the sub-layer or sub-layers are selectively exposed.