[ExI] 1000 Terabytes on a DVD

[James Clement]

On Fri, Jun 21, 2013 at 6:40 PM, Kelly Anderson <kellycoinguy at gmail.com>wrote:

>
> http://theconversation.com/more-data-storage-heres-how-to-fit-1-000-terabytes-on-a-dvd-15306
>
> Can anyone with a physics background comment on this please? How does one
> make a doughnut of light? Isn't the edge of the doughnut also "fuzzy"? I
> kind of get it, but it makes me wonder if these guys are smoking their own
> crack.
>
> That being said, the idea of 1000 terabytes on a DVD sized format is way
> cool to think about.
>
> -Kelly
>
>
> I can't speak to the physics of this, but if it's true, wouldn't an
important use of it would be to create much smaller (excimer laser
lithography) beams to etch silicon wafers, used to make CPUs? Current
technical limitations are at the 50nm range. This "doughnut" system claims
beams as small as 9nm.

James
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