Scientists have developed subdiffraction laser recording technology that allows the creation of nanoscale bits on optical storage media.
The amount of information created by humanityregularly increases and every year the issue of its storage becomes more and more acute. Researchers estimate that in 4 years the total amount of generated data will reach 175 zettabytes (175 ∙ 1021 bytes). Such growth rates lead to the opening of more and more data centers that consume a huge amount of energy required to power hard drives. with a maximum capacity of 2 TB and a lifespan of 3-5 years.
At the same time, optical storage technology,such as DVDs are already quite well developed, but their main disadvantage is their small storage capacity. This problem was solved by a group of scientists from the Shanghai University of Science and Technology, the Royal University of Technology of Melbourne and the National University of Singapore.
Using a new nanocomposite material fromgraphene oxide flakes and up-conversion nanoparticles, they have achieved a significant increase in data density through the developed low-power optical recording system. The laser platform they have created allows you to store up to 700 TB of information on a standard-sized disc (diameter 12 cm), which is comparable to the volume of 0.5 million DVDs.
Although the technology still needs to be improved, the research results open up new perspectives for solving the global data storage problem.
Earlier, we also reported on the discovery of a new way of storing information using light.</p>