NOVELTY - Forming a material or a composite to impart to at least one of its surfaces, micro and/or nano relief features involves presenting the material or composite in the liquid state phase condition and a low stress state; applying second mold to at least the exposed surface of the material or composite, and applying pressure to its interface with the molding surface of the first mold; and allowing or causing the material or composite to solidify from its liquid state phase condition whilst retaining the surface features imparted them.    USE - For forming a material or a composite (preferably polymer, especially thermoplastic polymers) to impart to at least one of its surfaces, micro and/or nano relief features (claimed) such as for forming membranes for separation such as for separation of components from or within water, chemicals, gases, blood, or use within fuel cells, sensor devices, light diffusers, light emitters, wave reflecting or absorbing such as radar, electronic circuits or circuitry, particle alignment or aligning technologies, water repellents or water repelling technologies such as hydrophobic materials, optical media such as liquid crystal display (LCD) or compact disc (CD) or digital video disc (DVD) technology or a photo-voltaic cell, memory storage devices, medical devices such as for skin repair or wound repair (e.g. bandages), drug delivery mechanisms or devices, reduced (low) friction surface materials, increased (high) friction surface materials, lamination technology, radio frequency identification (RFID) chips, conductive polymer layers/products/circuits, light bending technologies such as negative light reflections.    ADVANTAGE - In the present method, applying the material in a manner that does not require the material (e.g. polymer) to move across the die surface, when the material is in a relaxed or a reduced stress condition allows reduced forming pressures for forming desired products. The reduction or near elimination of required forming pressures aides in minimizing material stresses of deformation and may further reduce material shrinkage stresses when changing from a molten state or a liquid phase to a solid state or solid phase. The present method enables the forming of molded products having minimal surface stress or tension during the forming process which may be imparted to the product so formed.    DETAILED DESCRIPTION - Forming a material or a composite to impart to at least one of its surfaces, micro and/or nano relief features involves: a) presenting the material or composite to be formed when its as provided phase, or the dominant and/or primary phase, is in a liquid state (liquid state phase condition), the material or composite is of a kind able, in either (i) a cooled to solid state from a provided heated to liquid state phase condition, or, (ii) after a heated to solid state from a provided liquid state phase condition, to retain imparted micro and/or nano relief features at ambient temperatures; b) presenting the material or composite in the liquid state phase condition and a low stress state so as to progressively contact the or a molding surface of a first mold and retaining the material or composite in it's the liquid state phase condition and low stress state at and/or adjacent to the molding surface; c) applying a second mold to at least the exposed surface of the material or composite already presented and still in it's the liquid state phase condition and low stress state at and/or adjacent the molding surface of the first mold, and applying pressure with the molding surface of the second mold to and through the material or composite to its interface with the molding surface of the first mold; and d) allowing or causing the material or composite to solidify from its liquid state phase condition whilst retaining the surface features imparted to the material or composite from the molding surface, where at least one of the molding surface of the first and second mold has micro and/or nano surface features to be imparted from the molding surface. An INDEPENDENT CLAIM is included for an apparatus for continuously forming a material or a composite to provide mold surface imparted and molded form retained micro and/or nano relief features at a surface, comprising material or composite supply apparatus for continuously providing the material or composite when its phase, or its dominant and/or primary phase, is in a liquid state phase condition, the material or composite is of a kind able, in either (i) a cooled to solid state from a provided heated to liquid state phase condition, or, (ii) after a heated to solid state from a provided liquid state phase condition, to retain such micro and/or nano relief features at ambient temperature at such surface; a first mold having an advanceable molding surface or serially advanceable molding surface (first molding surface) onto which the supply apparatus applies the material or composite at least substantially to the full lateral extent of the first molding surface and, with the advancement of the first mold, longitudinally of the first molding surface; and a second mold having an advanceable molding surface or serially advanceable molding surface (second molding) able to contact the exposed surface of the material or composite already carried by the first mold so as, over a forming zone between the molds, to apply pressure between the first and second molding surfaces through the interposed material or composite, and where at least one of the first and second molding surface has micro and/or nano relief features to be imported into the molded form; and where either (IA) or (IIA) as follows applies: (IA) (a1) the supply apparatus can provide or provides the material or composite heated where the material or composite is in the liquid state phase condition, (b1) one or both the first and second molding surfaces are preheated so as to maintain the liquid state phase condition of the material or composite upon at least initial contact and until such time as the material or composite is within the forming zone between the molds, and (c1) one or both molds has an adaption where there can be or there is active heat exchange removal of heat from the material or composite interposed between the molding surfaces and for so long as is appropriate to provide the molded form with the retained micro and/or nano relief features at the surface; or (IIA) (a2) the supply apparatus can provide or does provide the material or composite in the liquid state phase condition, and (b2) there is an adaption where one or both molds can be is heated sufficiently where the material or composite interposed between the molding surfaces is heated sufficiently and for so long as is appropriate to provide the molded form with the retained micro and/or nano relief features at the surface.