https://doi.org/10.1038/s41586-023-06980-y
https://www.cas.cn/cm/202402/t20240223_5006001.shtml
The CAS Shanghai Institute of Optics and Fine Mechanics and the University of Shanghai for Science and Technology have made a breakthrough in the research of ultra-large capacity and super-resolution three-dimensional optical storage. The team used the world’s first dual-beam controlled concentration-induced luminescence super-resolution optical storage technology to break through the diffraction limit in both information writing and reading, achieving super-resolution with a point size of 54nm and a track pitch of 70nm data storage. In their experimental system, they used 100 layers for multi-layer recording on a single disk, resulting in data storage of petaBytes on a single disk. This technology makes it possible to achieve exabit-level storage by stacking nanoscale disks into arrays, which is essential in big data centres with limited space.