China Achieves Breakthrough in Optical Storage

Breakthrough in Optical Storage Achieved by China

Recently, Researcher Ruan Hao’s team from the Shanghai Institute of Optics and Fine Mechanics of the Chinese Academy of Sciences, known as “Shanghai Optics Institute,” along with Academician Gu Min from Shanghai University of Technology, and other researchers, have utilized the cutting-edge dual-beam controlled aggregation-induced emission super-resolution optical storage technology internationally, breaking the diffraction limit in both information writing and reading. They have proposed a green and long-lasting big data storage solution. Their research results were published on February 22 in the journal “Nature.”

Nano-photon storage schematic

Researchers have managed to transcend the optical diffraction limit using the dual-beam optical storage technology, demonstrating for the first time the ability to write and read information points ranging from multiple to hundreds of layers in three-dimensional space at sub-diffraction sizes. This new technology enables single-disc capacities of up to the Pb level, equivalent to at least ten thousand Blu-ray discs.

A transparent light disc weighing only 20 grams, where one disc can replace a massive storage device. Image Source: "Nature," courtesy of the interviewee

Explaining the breakthrough, Researcher Ruan Hao from the Space Laser Technology and Systems Department at the Shanghai Optics Institute emphasized that optical storage technology offers unique advantages such as being green, energy-efficient, secure, reliable, and long-lasting, making it highly suitable for cost-effective long-term storage of vast amounts of data. However, due to the diffraction limit, traditional commercial optical discs have only reached capacities in the range of hundreds of gigabytes.

Pb level disc preparation and reading methods schematic. Image Source: "Nature," courtesy of the interviewee

The introduction of nano-photon storage technology in the journal “Nature” not only successfully overcame the physics challenge of the diffraction limit in optical storage but also paves the way for breakthroughs in China’s storage sector. In the future, it is anticipated to demonstrate its capabilities in aerospace, biomedical, satellite communication, and other fields.

(Source: Science Daily)

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