Abstract: The present invention relates to a method for preparing a plurality of imprints on an inner surface of a polymeric substrate comprising the steps of: a) contacting a liquid polymeric mixture with a mold having an imprint forming surface thereon; b) curing the liquid polymeric mixture of step a) to form said polymeric substrate having said plurality imprints on said inner surface, when cured; and c) removing said mold from said polymeric substrate. There is also provided a method of forming the mold having the imprint forming surface thereon.

Abstract: An injection mold insert with hierarchical structures and a method for method of making such injection mold inserts are provided. The method includes imprinting a primary imprint structure on an article and imprinting a secondary imprint structure on the primary imprint structure on the article. The secondary imprint structure includes a plurality of shapes, each of the plurality of shapes being substantially smaller than shapes of the primary imprint structure. The method further includes bonding the article to a substrate, sputter-coating the article with a metal film as an electroforming seed layer, and electroforming the injection mold insert over the article. Finally, the method includes dissolving the article to define the injection mold insert having a negative replica of the primary and secondary imprint structures.

Abstract: The present invention provides a textured polymer substrate comprising nano-sized surface features that are arranged in a single array or in a hierarchical array, and at least one layer of an amorphous, hydrophilic layer deposited thereon. The disclosed textured polymer substrate is advantageously suited for providing anti-reflective, anti-fogging and anti-UV materials.

Abstract: The present invention relates to a method of forming an imprint on a metal substrate. The method comprises a step of providing a mold having a defined imprint surface pattern in the nano-sized or micro-sized range and a step of pressing the metal substrate against the mold at hot-working temperature to form a nano-sized or micro-sized imprint thereon.

Abstract: The invention provides a microcapsule array comprising a plurality of microcapsules immobilized on a surface, optionally in microwells in said surface. Each of the microcapsules comprises an outer layer or shell defining a microcapsule interior, said outer layer having a permeability towards a nanoscale species which is dependent on an environmental condition to which said array is exposed.

Abstract: A method of manufacturing an organic electronic or optoelectronic device, the method comprising the steps of: (a) providing a substrate having a plurality of banks formed thereon with alternating well formations formed therebetween, the surface of said banks having imprint formations formed thereon of a dimension conferring a selected wetting property to the surface of said banks that is different from the surface of said wells; and (b) depositing an organic solution into said well formations, wherein the wetting property of said banks causes any organic solution deposited thereon to be at least partially repelled.

Abstract: There is disclosed a method of making an imprint on a polymer structure comprising the step of pressing a mold having a defined surface pattern against the surface of a primary imprint of a polymer structure to form a secondary imprint thereon.

Abstract: The invention provides a microcapsule array comprising a plurality of microcapsules immobilised on a surface, optionally in microwells in said surface. Each of the microcapsules comprises an outer layer or shell defining a microcapsule interior, said outer layer having a permeability towards a nanoscale species which is dependent on an environmental condition to which said array is exposed.