Abstract: A display panel (1) comprising a body of optical material, the body having at least one optical image recorded therein in an encoded manner, wherein the image is selectively reconstructable and viewable (5, 6, 7) by illuminating the panel (1) using at least one light source (3a, 3b, 3c) under selected illumination conditions, wherein the image is reconstructable and viewable (5, 6, 7) such that at least one first optical property or parameter of the reconstructed image (e.g. its geometry, position in space, colour, its dynamic appearance) is selectable in value from amongst variable values of the at least one first optical property or parameter, or whose value is actively modifiable over time, as a function of or in dependence on the value of at least one second optical property or parameter of the illumination conditions of the at least one light source (e.g.

Abstract: A method of manufacturing laminate, including at least a carrying layer (1) and a cover layer (5) each of thermoplastic material bonded together with a diffractive optical element (2) incorporated between them, the method including the steps of: providing a layer (2) having a different refractive index from that of the carrying layer (1) or the cover layer (5) and placing the layer (2) on the carrying layer (1), wherein the layer (2) is placed only in some areas of the carrying layer (1); imprinting a stamp (4) with optical diffractive relief (6) thereon into the layer (2); placing the cover layer (5) on the layer (2); and heating the resulting laminate to a temperature at which bonding of the cover layer (5) and the carrying layer (1) occurs.

Abstract: A method of manufacture of products from geopolymer composite shaped in a mold which is filled by casting of geopolymer composite in form of a precursor and after its hardening the casting is taken out from the mold and the casting surface is provided with a metallic layer. Before metal-plating casting surface with absorption capacity greater than 5% is treated to make it chemically stable so that pH of a leachate from 100 g of the bulk product in 1000 g distilled water after 24 hours does not exceed 9. In order to reduce the absorption capacity of the casting surface it is penetrated with polymer substances or particles of a non-porous filler are added into the geopolymer composite in the precursor state.

Abstract: A method of making products with a functional relief surface (2) with high resolution up to 10 nm, which is copied from a template (1) or carrier of the negative relief of the surface, the so-called master. The template (1) of the relief surface (2) is provided with at least one layer of geopolymer composite, applied in a precursor state (3), in form of a liquid dispersion or grout in plastic or thixotropic condition, whose thickness is the same or greater than the depth of the template relief (1), at temperatures in the interval from the temperature corresponding to properties of the precursor (3) to the temperature corresponding to thermal decomposition of the precursor (3), and after hardening of geopolymer composite the layer or layers is/are separated from the template (1).

Abstract: A method of making products with a functional relief surface (2) with high resolution up to 10 nm, which is copied from a template (1) or carrier of the negative relief of the surface, the so-called master. The template (1) of the relief surface (2) is provided with at least one layer of geopolymer composite, applied in a precursor state (3), in form of a liquid dispersion or grout in plastic or thixotropic condition, whose thickness is the same or greater than the depth of the template relief (1), at temperatures in the interval from the temperature corresponding to properties of the precursor (3) to the temperature corresponding to thermal decomposition of the precursor (3), and after hardening of geopolymer composite the layer or layers is/are separated from the template (1).

Abstract: A method of manufacture of products from geopolymer composite shaped in a mold which is filled by casting of geopolymer composite in form of a precursor and after its hardening the casting is taken out from the mold and the casting surface is provided with a metallic layer. Before metal-plating casting surface with absorption capacity greater than 5% is treated to make it chemically stable so that pH of a leachate from 100 g of the bulk product in 1000 g distilled water after 24 hours does not exceed 9. In order to reduce the absorption capacity of the casting surface it is penetrated with polymer substances or particles of a non-porous filler are added into the geopolymer composite in the precursor state.