A staff of photonic engineers affiliated with a number of establishments in China has developed a brand new sort of optical DVD that’s able to holding as much as a petabyte of knowledge. The group used a brand new materials to coat the DVDs and new laser strategies to jot down knowledge. The outcomes are published in Nature.
The kind of DVDs at present used to carry films and knowledge have a capability of 4.5 gigabytes—sufficient to retailer roughly two hours of video. Knowledge is written utilizing a laser to etch a sequence of zeros and ones onto its floor. On this new effort, the staff in China discovered a technique to retailer considerably extra knowledge on a DVD utilizing a wholly new strategy.
Their new technique entails storing knowledge in 3D as an alternative of as a single layer. The staff discovered they had been capable of retailer knowledge on a single disk with as much as 100 layers. To create a number of layers on a disk, the staff developed a particular coating after which developed a technique to etch the person layers utilizing particular patterns of sunshine and a dye within the coating that allowed for etching on the nanoparticle scale. This allowed them to retailer knowledge at an unprecedented degree.
The analysis staff acknowledges that there are nonetheless some challenges to beat earlier than their DVDs could be commercialized. At the moment, the method of writing knowledge to the disk is much too gradual and it makes use of a number of power—issues that the staff believes could be corrected. Additionally, it isn’t but clear how a lot it could value to fabricate such DVDs or how a lot shoppers is likely to be charged.
Nonetheless, the analysis staff is optimistic that they’re heading in the right direction and count on to be promoting DVDs able to storing large quantities of knowledge, not solely to shoppers, but in addition to knowledge storage amenities, companies and media firms trying to enhance the standard of their merchandise.
Extra info:
Miao Zhao et al, A 3D nanoscale optical disk reminiscence with petabit capability, Nature (2024). DOI: 10.1038/s41586-023-06980-y
© 2024 Science X Community
Quotation:
A DVD-sized disk that may retailer 1 million films (2024, February 22)
retrieved 24 February 2024
from https://techxplore.com/information/2024-02-dvd-sized-disk-million-movies.html
This doc is topic to copyright. Aside from any truthful dealing for the aim of personal examine or analysis, no
half could also be reproduced with out the written permission. The content material is offered for info functions solely.
