Development of innovative diffractive devices for advanced security of products, valuables and documents

Counterfeiting documents, valuables and products is a current security threat, especially in the context of a deteriorating international situation. The project responds to this threat by developing knowledge and technology, especially in areas: Advanced optical methods for security documents with photonic and polarizing elements created by electron-beam writing technology. Research and development of methods for the preparation of optically variable image devices, that use the structure of forking lines in a wide range of pitches, from lines with a visually recognizable pitch to lines in the deep submicron area. Analysis of alternative methods and approaches allowing the imitation of the mentioned elements, devices and effects, characteristic limitations of these alternative methods.