China has made a huge stride in technology with the creation of a new optical disk that can hold a vast amount of data—up to a petabit. The innovation comes from the smart folks at the Shanghai Institute of Optics and Fine Mechanics, part of the Chinese Academy of Sciences. It’s not just another disk; it’s a game-changer for storing data.
The disk is built in 3D, with hundreds of layers stacked on each other
What sets this disk apart is its design. It’s built in 3D, stacking hundreds of layers on top of each other. This approach dramatically increases how much data you can store on it. The team didn’t stop there; they also made the data spots incredibly tiny, about 54 nanometers wide, and placed them super close together, at 70 nanometers apart. They managed to do this by getting around a common hurdle in optics, the optical diffraction limit.
The secret sauce in this disk is a special kind of film that contains a dye. When this dye gets hit with very short laser pulses, it allows data to be stored in these tiny spots.
Why is this a big deal? Think about all the data centers out there, storing all the videos, photos, and information we use every day. They need a lot of space and energy to operate. With this new disk, they could store much more data in a smaller space and use less energy.
With the world creating more data by the minute, finding efficient and high-capacity ways to store it is more important than ever. This new optical disk from China could be a key piece in solving that puzzle.
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