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Hamamatsu Corp. - Earth Innovations LB 2/24

Optical Data Stored on Fingernail

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Hank Hogan

Researchers at the University of Tokushima and at Hokkaido University in Sapporo, both in Japan, have used human fingernails as a medium for three-dimensional optical data storage. Employing a femtosecond laser to write and a fluorescence microscope to read, they stored data at a density of 2 Gb/cm3. That's concentrated enough to pack more than 0.5 Mb in a space 0.5 cm on a side and 0.1 mm deep, dimensions that can be easily accommodated by any fingernail. Using a femtosecond laser, data can be written in a fingernail (top). Data retrieval is performed using fluorescence microscopy...Read full article

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    Published: August 2005
    fluorescence microscopeHokkaido UniversityMicroscopyResearch & TechnologySensors & DetectorsspectroscopyTech Pulsethree-dimensional optical data storageUniversity of Tokushima

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