MrSeb writes: "Researchers from the University of Southampton, England, have successfully recorded, read, and erased data from a clear piece of nano-structured glass. This technique could revolutionize microscopy in general, and medical imaging in specific — and, perhaps more importantly for computing, it could also be used to store binary data, like an optical disc. Beyond the standard three dimensions that are used by optical disc storage — vertical and horizontal positions on the piece of glass, and varying depths — wavelength and polarization can also be used to carry data. Ta'da, five dimensions." Link to Original Source
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