Scientists unveil million-year data dtorage disk

Scientists unveil million-year data dtorage diskNanotechnologists have designed and built a disk that can store data for a million years or more.

Typically, magnetic hard discs can store data for little more than a decade.

MIT Technology Review reports that Jeroen de Vries at the University of Twente in the Netherlands and his team have designed and built a disk capable of storing data for more than one million years without the media decaying, and they've performed accelerated aging tests (Arrhenius) to prove it.

They build a disk capable of storing information for this period of time. The disk is simple in conception. The data is stored in the pattern of lines etched into a thin metal disc and then covered with a protective layer.

The metal in question is tungsten, which they chose because of its high melting temperature (3,422 degrees C) and low thermal expansion coefficient. The protective layer is silicon nitride (Si3N4) chosen because of its high resistance to fracture and its low thermal expansion coefficient.

The disc was made using standard patterning techniques and stored data in the form of QR codes with lines 100nm wide. They then heated the disks at various temperatures to see how the data fared.

According to Arrhenius law, a disk capable of surviving a million years would have to survive 1 hour at 445 Kelvin, a test that the new disks passed with ease. Indeed, they survived temperatures up to 848 Kelvin, albeit with significant amounts of information loss.

There are caveats, of course. The theory behind accelerated aging only applies in very specific circumstances and says nothing about survivability in other cases. It?s hard to imagine the new disk surviving a meteor strike, for example. Indeed, it would be unlikely to survive the temperatures that can occur in an ordinary house fire.

But de Vries and co are confident that they can make even more robust data storage systems. Their work is an interesting step towards preserving our data for future civilisations.

Source: CDRinfo

Tags: technologies

Comments
Add comment

Your name:
Sign in with:
or
Your comment:


Enter code:

E-mail (not required)
E-mail will not be disclosed to the third party


Last news

 
 
Highlights of the new feature update include a tweaked interface with Fluent Design elements
 
It’s now open to third-party developers and designed for smart home devices
 
Prices start at $1499 for the 13.5-inch model and $2499 for the 15-inch model
 
Users claim the Start menu isn’t working after the upgrade
 
It will release its first all-purpose AI chips by the end of 2017
 
Android 8.1 Oreo arriving on Pixel phones "in the coming weeks"
 
The Snapdragon 636 also comes with support for modern ultra-wide FHD+ displays
The Samsung Galaxy A5 (2017) Review
The evolution of the successful smartphone, now with a waterproof body and USB Type-C
February 7, 2017 /
Samsung Galaxy TabPro S - a tablet with the Windows-keyboard
The first Windows-tablet with the 12-inch display Super AMOLED
June 7, 2016 /
Keyboards for iOS
Ten iOS keyboards review
July 18, 2015 /
Samsung E1200 Mobile Phone Review
A cheap phone with a good screen
March 8, 2015 / 4
Creative Sound Blaster Z sound card review
Good sound for those who are not satisfied with the onboard solution
September 25, 2014 / 2
Samsung Galaxy Gear: Smartwatch at High Price
The first smartwatch from Samsung - almost a smartphone with a small body
December 19, 2013 /
 
 

News Archive

 
 
SuMoTuWeThFrSa
1234567
891011121314
15161718192021
22232425262728
293031    




Poll

Do you use microSD card with your phone?
or leave your own version in comments (4)