3-D Optical Memory Storage in Bacteriorhodopsin
3-D Optical Memory Storage In Bacteriorhodopsin
➢ Abstract
With the growth of Information over last few decades, demands for its efficient storage and faster processing has reached new dimensions. The need of the hour seems to be development of high capacity secondary storage devices as well as faster processors. The RAM used in most computers is the same type of memory used several years ago. The limit of increasing the density of RAM has already been reached. These limitations are more economical than physical. Presently RAM modules vary in capacity from a few hundred kilobytes to about 64 Megabytes. Anything greater than this range is both expensive and rare. . In comparison a 5 cubic centimeter block of Bacteriorhodopsin,( a light transducing protein in purple membrane of salt marsh archeon Halobacterium Salinarum ) studded in a polymer matrix could theoretically store 512 gigabytes of information. Moreover Bacteriorhodopsin modules could be run 1000 times faster meeting the demands of both speed and power of future digital computers. Also the present secondary storage devices store one dimensional (serial) information in a 2D plane which to a greater extent limits the memory bandwidth. However 3D memory devices using Bacteriorhodopsin modules store 2D information (Bit planes) throughout a volume with information partitioned in binary planes that are stacked in third dimension. One memory operation on entire bit plane, gives rise to tremendous memory bandwidth.
This has opened up gates for what are the major areas of improvements in purely electronic computers:
1) Ultra dense multi tetrabit memories (of the order of 1 Tb/cm3 ).
2) Highly parallel processing.
3) Nearly real time write and retrieval rates.
4) Data retention for longer time.
Russian scientists, under the leadership of the late Yuri Ovchinnikov, were the first to recognize and explore the potential of
➢ Abstract
With the growth of Information over last few decades, demands for its efficient storage and faster processing has reached new dimensions. The need of the hour seems to be development of high capacity secondary storage devices as well as faster processors. The RAM used in most computers is the same type of memory used several years ago. The limit of increasing the density of RAM has already been reached. These limitations are more economical than physical. Presently RAM modules vary in capacity from a few hundred kilobytes to about 64 Megabytes. Anything greater than this range is both expensive and rare. . In comparison a 5 cubic centimeter block of Bacteriorhodopsin,( a light transducing protein in purple membrane of salt marsh archeon Halobacterium Salinarum ) studded in a polymer matrix could theoretically store 512 gigabytes of information. Moreover Bacteriorhodopsin modules could be run 1000 times faster meeting the demands of both speed and power of future digital computers. Also the present secondary storage devices store one dimensional (serial) information in a 2D plane which to a greater extent limits the memory bandwidth. However 3D memory devices using Bacteriorhodopsin modules store 2D information (Bit planes) throughout a volume with information partitioned in binary planes that are stacked in third dimension. One memory operation on entire bit plane, gives rise to tremendous memory bandwidth.
This has opened up gates for what are the major areas of improvements in purely electronic computers:
1) Ultra dense multi tetrabit memories (of the order of 1 Tb/cm3 ).
2) Highly parallel processing.
3) Nearly real time write and retrieval rates.
4) Data retention for longer time.
Russian scientists, under the leadership of the late Yuri Ovchinnikov, were the first to recognize and explore the potential of