Recently, the research team led by Academician Guo Guangcan from the University of Science and Technology of China, Sun Fangwen, and the National Synchrotron Radiation Laboratory/School of Nuclear Science and Technology, Zou Chongwen, collaborated to prepare a brain like neuron device based on vanadium dioxide phase change film. They used the nitrogen vacancy color center in diamond as a solid-state spin quantum sensor to detect the dynamic connections of neuronal synapses under external stimuli, Shown the multi-channel signal transmission and processing process in the brain like nervous system. The relevant research results were recently published in the international journal "Progress in Science". Brain like neuron devices, commonly known as brain like chips, refer to the use of neural morphology devices to simulate basic functions such as neurons and synapses in the human brain, and then further connect these neural morphology devices to industrial neural networks to simulate complex functions such as information processing and storage in the "brain". Vanadium dioxide, as a typical oxide quantum material, exhibits reversible insulation metal phase transition near room temperature, making it an ideal material for preparing high switching ratio synaptic devices. In this study, based on the research foundation of vanadium dioxide in the past decade, the researchers of the research group used oxide molecular beam epitaxy equipment to overcome the preparation bottleneck of high-purity phase structured single crystal vanadium dioxide films, thus directly simulating the dynamic synaptic connection process between neurons. In addition, for the dynamic connection process between neuronal synaptic units, the experimental personnel innovatively utilized nitrogen vacancy color centers in diamonds for quantum sensing imaging, clearly revealing the correlation between multi-channel signal processing and conduction pathways in the vanadium dioxide based brain nervous system and external stimuli, providing direct experimental basis for constructing large-scale artificial synaptic layered tissues and neural morphological structures. (New News Agency)
Edit：Hu Sen Ming Responsible editor：Li Xi
Source：people.com.cn
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