Scientists have developed subdiffraction laser recording technology that allows the creation of nanoscale bits on optical storage media.
The volume of information created by mankind is regularly increasing 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). These growth rates are driving 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 is already quite well developed, but its main drawback is the small storage capacity. This problem was solved by a group of scientists from the Shanghai University of Science and Technology, the Royal Melbourne University of Technology and the National University of Singapore..
New laser recording technology will allow storage of 700 TB of data on optical disks
Using a new nanocomposite material of graphene oxide flakes and up-conversion nanoparticles, they achieved a significant increase in data density through the developed low-power optical recording system. The laser platform they created allows you to place 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 about the discovery of a new storage method information through light.
text: Ilya Bauer, photo: myseldon, University of Shanghai for Science and Technology