Latest discovery: materials that learn like brain

The dip oxide used in electronic products can "remember" all the history of the previous external stimulus ...

Source ｜ Science and Technology Daily

Author ｜ Zhang Mengran

Edit ｜ Zhang Runqi

Swiss researchers have found that the dip oxide used in electronic products can "remember" all the history of the previous external stimuli. This is the first material identified as the attribute. The research results are published in the magazine of Nature · Electronics.

Researchers at the Federal Institute of Technology and Broadband Cap Electronic Research Laboratory in Lausanne Federal Institute of Technology found in the process of studying the phase changes of the dioxide that the dioxide pupa has an insulating phase at room temperature and experienced steep insulators to metal at 68 ° C at 68 ° C. The transformation of its lattice changes. Traditionally, the dioxide showed missed memory (the material was immediately returned to the insulating state after eliminating the excitement). After hundreds of measurements, the researchers observed the memory effect in the material structure.

Researchers applied the current to the sample of dioxide. When current heating samples, it will cause the state of dioxide to change the state. Once the current passes, the material will return to the initial state. The researchers applied the second current pulse to the material and found that the time required to change the state was directly related to the history of the material. Researchers explained that the materials seem to "remember" the first phase change and predict the next phase change. This memory effect has nothing to do with the electronic attitude, but is related to the physical structure of the material.

Researchers have found that the dioxide can remember its nearest external stimulus for up to 3 hours. This is like copying what happened in the brain, because the role of the dioxide switch is like neurons.

The importance of this item is that the memory effect observed is the inherent characteristics of the material itself. Engineers rely on memory to perform various computing, and the demand for materials that enhance the computing process by providing larger capacity, speed and miniaturization are large, and the dioxide crickets meet all these conditions. More importantly, its continuous structural memory makes it different from traditional materials. Traditional materials store data as binary information that depends on electronic state operations.

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