title: Advances in protein-based three-dimensional optical memories.
abstract: An oriented bacteriorhodopsin cube is optimized as a potential three-dimensional optical memory medium. Write/read capability is demonstrated by using the photovoltaic signal induced by two-photon absorption. Our results demonstrate that a two-photon induced photovoltage can he detected in a three-dimensional Bacteriorhodopsin (BR) cube as large as 1.6 x 1.6 x 1.6 cm3. The read/write speed, signal to noise ratio, and the laser damage threshold for the protein-based three-dimensional optical memory is examined.
mesh_terms: D001436:Bacteriorhodopsins / Q000737:chemistry* / Q000528:radiation effects; D001672:Biocompatible Materials; D004582:Electronics, Medical / Q000295:instrumentation; D007834:Lasers; D008422:Materials Testing; D008568:Memory; D055095:Optics and Photonics / Q000295:instrumentation*; D010777:Photochemistry; D017785:Photons; D013053:Spectrophotometry
chemical_list: D001672:Biocompatible Materials; D001436:Bacteriorhodopsins