Accession Number : ADA327063

Title :   Protein-Based Branched-Photocycle Three-Dimensional Optical Memories.

Descriptive Note : Final rept. Jan 93-Jun 96,

Corporate Author : SYRACUSE UNIV NY DEPT OF CHEMISTRY

Personal Author(s) : Birge, Robert R.

PDF Url : ADA327063

Report Date : APR 1997

Pagination or Media Count : 30

Abstract : The promise of new architecture and more cost effective miniaturization has prompted interest in biomolecular optical memories. We examine here the use of the protein bacteriorhodopsin in a branched photocycle three dimensional memory. By using a sequential one photon process, parallel read and write processes can be carried out without disturbing data outside of the irradiated volume. A bench scale prototype was developed and tested. The prototype used active matrix liquid crystal spatial light modulators, a CCD array detector to monitor the paged data and krypton ion lasers to provide the irradiation. A variety of data cuvettes were prepared to test various optical geometries and protein environments. The protein was optimized by using both thermal and chemical modifications, resulting in a live fold improvement in data write efficiency.

Descriptors :   *PROTEINS, *MEMORY DEVICES, THERMAL PROPERTIES, OPTICAL PROPERTIES, COST EFFECTIVENESS, THREE DIMENSIONAL, PHOTONS, MOLECULAR STRUCTURE, IRRADIATION, GAS LASERS, MINIATURIZATION, LIGHT MODULATORS, KRYPTON.

Subject Categories : Biochemistry
      Computer Hardware
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE