2D MoS2 Neuromorphic Devices for Brain-Like Computational Systems

5 years ago

2D MoS2 Neuromorphic Devices for Brain-Like Computational Systems

Dongmei Niu, Junjie Guo, Jun He, Qing Wan, Junliang Yang, Yongli Gao, Haipeng Xie, Xiang Wan, Yi Yang, Jie Jiang

Hardware implementation of artificial synapses/neurons with 2D solid-state devices is of great significance for nanoscale brain-like computational systems. Here, 2D MoS2 synaptic/neuronal transistors are fabricated by using poly(vinyl alcohol) as the laterally coupled, proton-conducting electrolytes. Fundamental synaptic functions, such as an excitatory postsynaptic current, paired-pulse facilitation, and a dynamic filter for information transmission of biological synapse, are successfully emulated. Most importantly, with multiple input gates and one modulatory gate, spiking-dependent logic operation/modulation, multiplicative neural coding, and neuronal gain modulation are also experimentally demonstrated. The results indicate that the intriguing 2D MoS2 transistors are also very promising for the next-generation of nanoscale neuromorphic device applications. 2D MoS2 synaptic/neuronal transistors are fabricated using poly(vinyl alcohol) as laterally coupled, proton-conducting electrolytes. Fundamental synaptic functions, such as an excitatory postsynaptic current, paired-pulse facilitation, and a dynamic filter for information transmission of biological synapses, are successfully emulated. Moreover, spiking-dependent logic operation/modulation, multiplicative neural coding, and neuronal gain modulation are also demonstrated in such MoS2 neuromorphic devices.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/smll.201700933