As conventionally deployed, plasma polymerisation is the cross-linking of small molecules on top of a collecting substrate due to molecule fragmentation in the energetic environment. The resulting polymers, whilst exceptionally stable, are thus disordered, and often have poor resemblance to the monomer . However, foremost low power and more latterly higher pressure can reduce the degree of monomer fragmentation . The combination of higher pressure and low power (γregime) reduces the degree of monomer fragmentation in the gas-phase and at the collecting surface due to `softlanding' of ions which improves functional group retention . These ions, comprising intact or protonated monomers and dimers, are often sufficient to account for the whole of the mass flux . Though there is still a significant debate about the contribution of ions to the film-forming species . High pressure and low power are thus optimal conditions to deposit molecules as intact as possible to study their interaction with the surface and the order of the polymer. Furthermore, recent studies challenge the typically held belief that plasma polymerisation is a surfaceindependent process. The properties in the early stages of plasma polymerisation differ from thicker films in terms of chemistry , morphology , growth rate , and adhesion because the monomers land on the pristine substrate rather than an already coated polymeric layer.