John Shutt wrote:
3 Terabyte CDs coming to a Player near you (blue lasers need not apply...) John
http://www.technologyreview.com/read_article.aspx?id=17504&ch=infotech&ch=infotech
How to Burn a Three Terabyte CD
A new nano-optical device can focus laser light tighter than traditional optics, which could lead to higher-density data storage.
By Kate Greene
A computer simulation of the optical nano antenna that Harvard researchers have fabricated. Consisting of two gold-coated nano rods separated by a 30-nanometer gap, the antenna can focus light from a commercial laser to a spot just 40 nanometers wide. It could be used to write terabytes, rather than gigabytes, of data to a CD or DVD.
The antenna consists of two gold-coated nano rods, separated by a 30-nanometer-wide gap, according to Crozier. When light from the laser hits the nano rods, it applies a force to the electrons in the gold, nudging them out of place. The electrons don't stay displaced for long, however, and are pulled back toward their original position. But they overshoot it, Crozier says, and bounce back out of place, oscillating "like a mass on a spring."
yea, yea, yea
I've seen this sort of stuff before.
Nobody is even close to doing this usefully.
They key is the mechanics, robustly. This is possible.
Doug McDonald
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