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FrozenGate by Avery

High Capacity DVD Storage!






Wow! That's an awesome find HitShane :) I'm fast running out of room for movies, they need to hurry up.

Pretty phenomenal that they are using existing optical technology to achieve this. Hopefully it won't be to long before it is available. Although it could affect sales tremendously. I could see traditional manufacturers doing their best to stop this :(

~ LB
 
If they do start using it, they can raise the MSRP, and make a killing...
 
True, but they'd need to sell off their existing stock first and then, someone would probably only need to buy 1 hi-capacity DVD in their lifetime :D Maybe 2 for someone like me :whistle:

~ LB
 
So it's a 9nm "hole" in a much bigger dot? Okay, that makes the effective dot smaller, but I don't see how you can fit more dots that way.

"we can only fit 12 dinner rolls in this box. But the hole that a donut makes is much smaller than a dinner roll, so clearly we can fit many more donuts in this box than dinner rolls." Am I missing something, or is this just troll physics?
 
Cyparagon said:
So it's a 9nm "hole" in a much bigger dot? Okay, that makes the effective dot smaller, but I don't see how you can fit more dots that way.

"we can only fit 12 dinner rolls in this box. But the hole that a donut makes is much smaller than a dinner roll, so clearly we can fit many more donuts in this box than dinner rolls." Am I missing something, or is this just troll physics?
Click to expand...

I have been talking about this with my colleagues from work today and what you said isn't entirely correct.

It is more like putting a hole less donut in the box then cutting the hole, then removing the donut so there is just the hole sized piece left. Ok? :yh:
 
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My dad showed me this the other day, he asked me to explain it to him :crackup:

It's quite amazing.
 
Cyparagon said:
So it's a 9nm "hole" in a much bigger dot? Okay, that makes the effective dot smaller, but I don't see how you can fit more dots that way.

"we can only fit 12 dinner rolls in this box. But the hole that a donut makes is much smaller than a dinner roll, so clearly we can fit many more donuts in this box than dinner rolls." Am I missing something, or is this just troll physics?
Click to expand...

Troll physics :) ... My new favorite word.

My understanding is this Cy, The size of the hole made by the writer is bound by Abbe's Law to half the width of it's wavelength when focused through a lens.

The picture looks like the red laser when cancelled out by the purple laser "doughnut" has a width less then half the width of its wavelength thus circumventing Abbe's Law. The pit that the writer can make is effectively smaller than before thus able to write more pits within the same area, much like the reason a Blue-Ray laser can write more data than a Red laser.

This is just my understanding of what the article said. Whether or not this is "real" physics or "troll" physics who knows. Hard to verify things that small :tinfoil:

~ LB
 
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You're missing my point entirely. Yes, the hole is small, but you can only place one hole per donut, and the donut is pretty large. That defeats the purpose, does it not?
 
I don't think they are bound by the size of the doughnut, the size becomes the size of the hole :thinking:

~ LB
 
*sigh...*

I'll try again. Picture book mode - engage!

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Oh, I see. The doughnut overwrites the written bit. Thanks for the pictures. I was assuming that the purple/red cancelling each other out would avoid this.

Don't know. I'll see if there's some more documentation :beer:

2nd edit, sorry working link to abstract html PDF link not working...

http://www.nature.com/ncomms/2013/130619/ncomms3061/full/ncomms3061.html

It is from this edu site...

http://www.swinburne.edu.au/engineering/cmp/profile.php?member=revans

See what you come up with Cy...

Edit...

Illustration from Abstract...

doughnut_by_stonekaiju-d6a47ri.jpg


From what I read it appears the specially prepared photoresin as well as the strength of the inhibiting laser play a part in the resolution of the dots. It's a fairly detailed explanation. My guess is that the inhibiting laser would suppress any destruction of previously written dots although the pictures in the abstract showed a fixed distance between dots representing the inhibiting laser. This is all just research at this point so I'm really not sure if what you pointed out is an issue. Maybe you can make better sense of it :)


~ LB
 
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Okay, so the 488 is the write, and the 375 is the inhibit. Even if they got that to work with some strange dye, the diffraction limitation isn't a top-hat profile. It's a Gaussian profile, which means it isn't a perfect dot - it's a fuzzy blob. I don't think you can get a decent "hole" in the donut to begin with because of this beam profile. If you have a 500nm perfect focal point for example, I think it will look more like:

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If this does take off and goes mass production. We'll have a source of 375 and 488nm laser diodes. :D
 
Sorry Cy, the link to the PDF abstract doesn't work, I've corrected it and placed it below. It is still accessible from the edu site. First and second links are relevant.

It seems the special resin used as the writing medium cures super fast for higher resolution and can make shapes smaller than the focal spot. Although the pictures do look like blobs as you pointed out :)

getImage.xqy


working links...

Optics InfoBase: Optics Express - High-photosensitive resin for super-resolution direct-laser-writing based on photoinhibited polymerization

Three-dimensional deep sub-diffraction optical beam lithography with 9?nm feature size : Nature Communications : Nature Publishing Group

ncomms3061-f1.jpg


While a doughnut-shaped inhibition beam is introduced into two-beam OBL (Supplementary Fig. S5), the photoinhibition process is activated to confine the photopolymerization to the centre of the focal spot through the photo-excitation of the inhibitors (TED). As the inhibition process is achieved immediately near the threshold of the new material while the intensity of the writing beam at the focal centre remains the same as if there was no inhibition beam, the effective intensity profile (that is, the effecive focal spot size), equavalent to the area with the photopolymerization degree above the threshold becomes smaller (Fig. 3c). Thus, the photopolymerized feature size can be further reduced (Fig. 3c). As the photopolymerization is inhibited only in the ring of the doughnut-shaped inhibition beam in this method, the degree of the photopolymerization monomer conversion at the focus centre does not change and remains above the threshold, allowing the photopolymerized structure to survive after the developing process
Click to expand...

it is possible to achieve a minimum degree of photopolymerization required for building solidified structures with a feature size smaller than the focal spot of the writing beam.
Click to expand...

Well, it's all a bit above my head to be honest ;) but very cool. As djQuan pointed out, hopefully a cool source for 375nm and 488nm lasers for LPF'ers one day :D

~ LB
 
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