Three-dimensional data storage systems

In general, the commercially used optical data storage media deposit the information on disks or cards (two-dimensional data deposition. Table 1). Data storage systems, which store data in three and more dimensions are being developed. 

Ultrashoit-pulsed lasers are efleetive, but are not a practical solution for an optical data storage system. It is possible to achieve a three dimensional rewritable bit data storage using continuous wave illumination. With this technology an information density of 88 Gbitcm could be achieved. 

Martin, Y.C., Danaher, E.B., May, C.S., and Weininger, D. MENTHOR, a database system for the storage and retrieval of three-dimensional molecular structures and associated data searchable by sub structural, biologic, physical, or geometric properties./. Comput.-Aided Mol. Des. 1998, 1, 15-29. 

Toriumi, A., and Kawata, S. Reflection confocal microscope readout system for three-dimensional photochromic optical data storage. Opt. Lett. 23,1924, 1998. 

MENTHOR, A Database System for the Storage and Retrieval of Three-Dimensional Molecular Structures and Associated Data Searchable by Substructural, Biological, Physical, or Geometric Properties. 

Molecular Design Limited has recently extended their MACCS-II chemical database system to MACCS-3D, for the storage and retrieval of three-dimensional atomic coordinates. Physical and biological data may be stored. A novel feature of MACCS-3D is the ability to recognize and remove duplicate coordinate sets. Coordinate sets can be retrieved from the database by specifying a combination of numerical and textual queries or by substructure. 

Y. C. Martin, E. A. Danaher, C. S. May, and D. Weininger,/. Comput.-AidedMol. Design, 2, 15 (1988). MENTHOR, a Database System for the Storage and Retrieval of Three-Dimensional Molecular Structures and Associated Data Searchable by Substructural, Biologic, Physical, or Geometric Properties. 

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