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Stanford writes in world's smallest letters
Date:1/30/2009

ron wavelength. The researchers read them separately, like stacked pages of a book. The experience, Moon said, is roughly analogous to an optical hologram that shows one object when illuminated with red light and a different object in green light.

For Manoharan, the true significance of the work lies in storing more information in less space. "How densely can you encode information on a computer chip? The assumption has been that basically the ultimate limit is when one atom represents one bit, and then there's no more roomin other words, that it's impossible to scale down below the level of atoms.

"But in this experiment we've stored some 35 bits per electron to encode each letter. And we write the letters so small that the bits that comprise them are subatomic in size. So one bit per atom is no longer the limit for information density. There's a grand new horizon below that, in the subatomic regime. Indeed, there's even more room at the bottom than we ever imagined."

In addition to Moon and Manoharan, authors of the Nature Nanotechnology paper, "Quantum Holographic Encoding in a Two-Dimensional Electron Gas," are graduate students Laila Mattos, physics; Brian Foster, electrical engineering; and Gabriel Zeltzer, applied physics.

The research was supported by the Department of Energy through SLAC National Accelerator Laboratory and the Stanford Institute for Materials and Energy Science (SIMES), the Office of Naval Research, the National Science Foundation and the Stanford-IBM Center for Probing the Nanoscale.


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Contact: Dan Stober
dstober@stanford.edu
650-721-6965
Stanford University
Source:Eurekalert  

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