Abstract: A system, including a moving web of material unwound from a support and a stamp mounted on a roller, wherein the stamp includes a base surface and a continuous, regular array of pattern elements having a trapezoidal cross-sectional shape and extending above the base surface, and wherein the stamping elements each have a substantially planar stamping surface. An inking roller with an inking surface at least periodicially contacts the stamping surface of the stamping elements. The inking surface is impregnated with an ink composition including an organosulfur compound having a thiol functional group selected to bind to a major surface of the web material to form a self-assembled monolayer (SAM) thereon according to the array of pattern elements on the stamping surface.

Abstract: An optical film includes an optical substrate and an adhesive first surface disposed on the optical substrate. The adhesive includes siloxane moieties at a siloxane-rich second surface of the adhesive. The adhesive increases adhesion when placed in contact with a second substrate over time. Optical film methods are also disclosed.