With coatings adhesion has natural practical interest, but also academic for many. In vacuum coating, adhesion is where surface science meets practical reality. When a coating fails, the cause is rarely visible to the naked eye; it usually lies in the atomic-scale "surface state" at the moment of deposition. FEM model of stresses in practical adhesion test The Race Against Contamination Adhesion of the film to surface is best accomplished by having some degree of solubility o