The invention concerns a nanostructured layer system comprising a substrate, an intermediate layer, which comprises an aromatic azo compound, applied to the substrate, and a metallic cover layer applied thereto, whereby the intermediate layer is structured in a light-induced manner by irradiation of light.

The nanostructured layer system is characterized in that the metallic cover layer contains nickel as a ferromagnetic metal and that the light is linearly polarized for structuring.

The invention further concerns a method for producing such a nanostructured layer system.

The invention concerns a nanostructured layer system comprising a substrate, an intermediate layer, which comprises an aromatic azo compound, applied to the substrate, and a metallic cover layer applied thereto, whereby the intermediate layer is structured in a light-induced manner by irradiation of light.

The nanostructured layer system is characterized in that the metallic cover layer contains nickel as a ferromagnetic metal and that the light is linearly polarized for structuring.

The invention further concerns a method for producing such a nanostructured layer system.

An optical recording medium includes a reflective layer, a first dielectric layer, a phase-change recording layer, and a second dielectric layer. The phase-change recording layer has an average composition represented by SbxInyMz, in which M is at least one of Mo, Ge, Mn, and Al, and x, y, and z are values in the ranges 0.70x0.92, 0.05y0.20, and 0.03z0.10, respectively, provided that x+y+z=1, the first dielectric layer includes a zirconium oxide-containing composite material or tantalum oxide, and the second dielectric layer includes a chromium oxide-containing composite material or silicon nitride.

An optical recording medium includes a reflective layer, a first dielectric layer, a phase-change recording layer, and a second dielectric layer. The phase-change recording layer has an average composition represented by SbxInyMz, in which M is at least one of Mo, Ge, Mn, and Al, and x, y, and z are values in the ranges 0.70x0.92, 0.05y0.20, and 0.03z0.10, respectively, provided that x+y+z=1, the first dielectric layer includes a zirconium oxide-containing composite material or tantalum oxide, and the second dielectric layer includes a chromium oxide-containing composite material or silicon nitride.

The present invention teaches a methodology and apparatus for data storage using elements of data sets stored as standing waves of a plurality of wavelengths in an optical photosensitive medium. A selector chooses the locations wherein the combinations of standing waves are stored. The medium is read in transmission mode with select standing waves acting as notch filters.

The present invention teaches a methodology and apparatus for data storage using elements of data sets stored as standing waves of a plurality of wavelengths in an optical photosensitive medium. A selector chooses the locations wherein the combinations of standing waves are stored. The medium is read in transmission mode with select standing waves acting as notch filters.

The present invention teaches a methodology and apparatus for data storage using elements of data sets stored as standing waves of a plurality of wavelengths in an optical photosensitive medium. A selector chooses the locations wherein the combinations of standing waves are stored. The medium is read in transmission mode with select standing waves acting as notch filter.

The present invention teaches a methodology and apparatus for data storage using elements of data sets stored as standing waves of a plurality of wavelengths in an optical photosensitive medium. A selector chooses the locations wherein the combinations of standing waves are stored. The medium is read in transmission mode with select standing waves acting as notch filter.

An optical device, such as an optical storage medium, comprises a layer of material in the solid state that has a refractive index that is switchable between at least two stable values by applied light. A reflector is spaced apart from the layer of material by a solid spacer layer transmissive to light.

An optical device, such as an optical storage medium, comprises a layer of material in the solid state that has a refractive index that is switchable between at least two stable values by applied light. A reflector is spaced apart from the layer of material by a solid spacer layer transmissive to light.