Is a faster and denser data storage revolution coming? According to a study published recently by the British magazine "Nature Physics", a US joint research team made a two-dimensional (2D) metal chip using layered tungsten telluride with a thickness of only three atoms! While saving more energy, the storage speed has increased by as much as 100 times, laying the foundation for the development of next-generation data storage materials.
The world today produces more data than ever before, but our current storage systems are close to the limits of size and density, so there is an urgent need for related technological revolutions. Scientists are studying other forms of data preservation, including storage on laser-etched glass slides, ice-cold molecules, single hydrogen atoms, holographic film and even DNA.
In this new study, researchers at Stanford University, the University of California, Berkeley, and Texas A&M University tried another method. The new system they developed consisted of tungsten telluride metal, arranged in a pile of super Thin layers, each layer is only 3 atoms thick. It can replace silicon chips to store data, and is denser, smaller, faster, and more energy-efficient than silicon chips.
The researchers applied a tiny current to the thin layer structure of tungsten telluride, causing its odd-numbered layers to stably shift relative to the even-numbered layers, and used the arrangement of the odd-even layers to store binary data. After the data is written, they then use a quantum property called Bailey curvature to read the data without disturbing the arrangement.
The team said that the new system has a huge advantage over existing silicon-based data storage systems-it can fill more data into a very small physical space and is very energy-efficient. In addition, the offset occurs so fast that the data writing speed can be 100 times faster than in the prior art.
At present, the team has applied for a patent for the design. They are also studying ways to improve the next step, such as looking for other 2D materials besides tungsten telluride. Researchers say that very small adjustments to the ultra-thin layer will have a great impact on its functional characteristics, and people can use this knowledge to design new energy-saving equipment to achieve sustainable development and a smarter future Storage method. (Reporter Zhang Mengran)
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