The present invention relates to an information storage medium and a method for long-term storage of information comprising the steps of: providing a ceramic substrate; coating the ceramic substrate with a layer of a second material different from the material of the ceramic substrate, the layer having a thickness no greater than 10 m; tempering the coated ceramic substrate to form a writable plate or disc; encoding information on the writable plate or disc by using a laser and/or a focused particle beam to manipulate localized areas of the writable plate or disc.

Methods for producing an optical element having a cured layer with a concavo-convex structure are described. Such a method includes: forming a composition layer on a base material by using a composition containing a polymerizable compound and a photo initiator; forming a pattern formative layer by pressure-contacting a mold; and forming the cured layer having the concavo-convex structure by photo-curing the pattern formative layer, wherein the polymerizable compound contains (a) a urethane (meth)acrylate monomer, the composition contains 0.005 to 0.5 part by mass of the photo initiator with respect to 100 parts by mass of the polymerizable compound, and the cured layer has a film thickness of the concavo-convex structure within a range of 0.5 mm to 1 cm.

Photosensitive polymers for recording volume holograms, anisotropic volume holograms, and corresponding volume holographic elements are described herein.

The present invention relates to a method for recording data in a layer of a ceramic material and to a device for recording data in a layer of a ceramic material.

The present invention relates to a method for recording data in a layer of a ceramic material and to a device for recording data in a layer of a ceramic material.

An optical memory includes a support and nanoparticles, each of which changes between a crystal phase and an amorphous phase when irradiated with light. The nanoparticles are supported by the support and spaced apart from each other in one or both of an in-plane direction of a face of the support and a direction normal to the face of the support.

The present invention relates to an information storage medium and a method for long-term storage of information comprising the steps of: providing a ceramic substrate; coating the ceramic substrate with a layer of a second material different from the material of the ceramic substrate, the layer having a thickness no greater than 10 m; tempering the coated ceramic substrate to form a writable plate or disc; encoding information on the writable plate or disc by using a laser and/or a focused particle beam to manipulate localized areas of the writable plate or disc.

Devices having at least one nanostructured layer derived from a binary sequence written onto an optical medium and methods of preparing the nanostructured layers.

Devices having at least one nanostructured layer derived from a binary sequence written onto an optical medium and methods of preparing the nanostructured layers.

Devices having at least one nanostructured layer derived from a binary sequence written onto an optical medium and methods of preparing the nanostructured layers.