Abstract: A method of making a photoresist with rare-earth sensitizers is provided. The rare-earth sensitizer could be a salt or a rare-earth complex. According to the invention, photoresist composition is useful to pattern circuits by visible light.

Abstract: A method of making a photoresist with rare-earth sensitizers is provided. The rare-earth sensitizer could be a salt or a rare-earth complex. According to the invention, photoresist composition is useful to pattern circuits by visible light.

Abstract: This invention relates to a three-dimensional optical memory made from a fluorescent photosensitive material, and a method and device for the storage and retrieval of information on the three-dimensional optical memory. The fluorescent photosensitive material can be glass and vitroceramic, both of which exhibit both fluorescent and photosensitive properties. Both one-photon and two-photon processes can be used for writing and reading the digital information on to the three-dimensional optical memory, in conjunction with a confocal microscope. A high reading sensitivity is obtained by using fluorescence during the reading cycle.

Abstract: A three-dimensional vertical memory with florescent photosensitive vitreous material is read and written to by a laser or respective lasers. The memory can be cerium and europium-doped fluorescent photosensitive glass, yttrium, europium and praseodymium-containing glass or TV-doped glass, etc. A confocal microscope may be used in the writing process and the memory may be scanned by rotating it.

Abstract: This invention relates to fluorescent photosensitive glasses and a process for the production thereof. The fluorescent photosensitive glasses according to the present invention employ silicate or phosphate glass compositions including minor amounts of one or more fluorescent agents (e.g., ytterbium (Yb), samarium (Sm), europium (Eu)) and one or more photosensitive agents (e.g., erbium (Er), thulium (Tm), praseodymium (Pr), ytterbium (Yb), holmium (Ho), samarium (Sm), cerium (Ce), dysprosium (Dy), terbium (Tb), neodymium (Nd)). The inventive fluorescent photosensitive glass can be used in photographic applications, florescent displays and computer memories.

Abstract: This invention relates to fluorescent photosensitive vitroceramics and the process for the production thereof. The fluorescent photosensitive vitroceramics according to the present invention employ fluorosilicate glass compositions including various photosensitizing metals and rare earths which impart photosensitive properties and fluorescent properties to the vitroceramic. After irradiation, the photosensitive agents control the precipitation of fine fluoride crystals which also contain rare earth ions. These rare earth ions can be made to fluoresce in a controlled manner. The inventive fluorescent photosensitive vitroceramics can be used in photographic applications, florescent displays and computer memories.