Security enhancement of artificial neural network using physically transient form of heterogeneous memristors with tunable resistive switching behaviors
IF 6.8 2区 材料科学Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Jing Sun, Zhan Wang, Xinyuan Wang, Ying Zhou, Yanting Wang, Yunlong He, Yimin Lei, Hong Wang, Xiaohua Ma
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引用次数: 0
Abstract
As a critical command center in organisms, the brain can execute multiple intelligent interactions through neural networks, including memory, learning and cognition. Recently, memristive-based neuromorphic devices have been widely developed as promising technologies to build artificial synapses and neurons for neural networks. However, multiple information interactions in artificial intelligence devices potentially pose threats to information security. Herein, a transient form of heterogeneous memristor with a stacked structure of Ag/MgO/SiNx/W is proposed, in which both the reconfigurable resistive switching behavior and volatile threshold switching characteristics could be realized by adjusting the thickness of the SiNx layer. The underlying resistive switching mechanism of the device was elucidated in terms of filamentary and interfacial effects. Representative neural functions, including short-term plasticity (STP), the transformation from STP to long-term plasticity, and integrate-and-fire neuron functions, have been successfully emulated in memristive devices. Moreover, the dissolution kinetics associated with underlying transient behaviors were explored, and the water-assisted transfer printing technique was exploited to build transient neuromorphic device arrays on the water-dissolvable poly(vinyl alcohol) substrate, which were able to formless disappear in deionized water after 10-s dissolution at room temperature. This transient form of memristive-based neuromorphic device provides an important step toward information security reinforcement for artificial neural network applications.
期刊介绍:
Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.