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本团队设计了半导体/氧化物异质结型神经形态器件Pt/CeO2/Nb-SrTiO3，旨在通过利用异质结的空间电荷存储区实现电导的连续调控。在此基础上，利用该器件模拟了EPSC/IPSC、PPF/PPD、SADP、SDDP、SRDP、STDP、BCM等生物突触可塑性。此外，将该器件结合神经网络算法，实现了对手写数字数据集和心电图信号ECG数据集的分类识别，展示了该忆阻器在构建类脑人工智能计算硬件系统方面的重要潜力。相关成果以“Synaptic and Gradual Conductance Switching Behaviors in CeO2/Nb-SrTiO3Heterojunction Memristors for Electrocardiogram Signal Recognition”为题发表在期刊《ACS Applied Materials & Interfaces》上(15，5456 (2023))。青岛大学2020级硕士研究生李杭菲为论文第一作者，青岛大学特聘教授宿杰和刘彤为共同通讯作者，青岛大学为唯一单位。
图 (a) 阶梯脉冲下的长时增强与抑制的循环测试。(b)循环测试中的非线性度与对称度统计。(c)通过忆阻器和卷积神经网络的组合对五类ECG信号(N、S、V、F和Q)进行分类检测的示意图。(d)学习过程后连接到输出神经元的五类ECG信号的特殊突触权重值。(e) ECG数据集的识别精度和F1值随训练周期的变化规律。(f)器件训练后对ECG信号分类识别的混淆矩阵结果。
近期代表作（一作、共一、通讯）：
1.Yunlong Bu, Ting Xu, Sunyingyue Geng, Shuangqing Fan, Qiang Li, and
Jie Su. Ferroelectrics-Electret Synergetic Organic Artificial Synapses with Single-Polarity Driven Dynamic Reconfigurable Modulation. Advanced Functional Materials 2213741 (2023) https://doi.org/10.1002/adfm.202213741.
2.YiLong Wang, Minghui Cao*, Jing Bian, Qiang Li, and Jie Su*. Flexible ZnO Nanosheet-Based Artificial Synapses Prepared by Low-Temperature Process for High Recognition Accuracy Neuromorphic Computing. Advanced Functional Materials 32 （2023）2209907.
3.Xuhai Liu, Fengyun Wang,* Jie Su#, Ye Zhou,* and Seeram Ramakrishna*. Bio-Inspired 3D Artificial Neuromorphic Circuits. Advanced Functional Materials 32 (2022) 2113050.
4.Ting Xu, Shuangqing Fan, Minghui Cao, Tong Liu, andJie Su*. Flexible organic field-effect transistor nonvolatile memory enabling bipolar charge storage by small-Molecule floating gate. Applied Physics Letters 120 (2022) 073301.
5.Xiaofan Shen, Qunyong Luo, Zongshuo Wu ,Ying Zhou, Jianli Wang, Junting Zhang *, Jie Su*, and Xiaomei Lu. Magnetoelectric coupling dependent on ferroelectric switching paths in two-dimensional perovskite multiferroics, Rhysical Review B 103 (2021) L220406.
6.Hangfei Li, Sunyingyue Geng, Tong Liu,* MingHui Cao, and Jie Su*. Synaptic and Gradual Conductance Switching Behaviors in CeO2/Nb−SrTiO3 Heterojunction Memristors for Electrocardiogram Signal Recognition. ACS Applied Materials & Interfaces. 15 (2023) 5456 .
7.Shuangqing Fan, Ting Xu, Enxiu Wu, Minghui Cao, Tong Liu, and Jie Su* . Side-liquid-gated electrochemical transistors and their neuromorphic applications. Journal of Materials Chemistry C 9 (2021) 16655.
8.Tong liu, Tong wang, Hangfei Li, Jie Su*, Xidong Hao, Fengmin, Liu, Fangmeng, Liu, and Xishuang Liang*. Ethanol sensor using gadolinia-doped ceria solid electrolyte and double perovskite structure sensing material. Sensors and Actuators B: Chemical 349 (2021) 130771.
9.Kaili Liang, Mengfei Li, Yankuo Hao, Wengang Yan, Minghui Cao, Shuangqing Fan, Wenpeng Han*, and Jie Su*. Reduced graphene oxide with 3D interconnected hollow channel architecture as high-performance anode for Li/Na/K-ion storage. Chemical Engineering Journal 394 (2020) 124956.
10. Biao Chen, Shangheng Sun, Shuangqing Fan,* Xuhai Liu,* Qiang Li, and Jie Su*. Low-Cost Fabricated MgSnO Electrolyte-Gated Synaptic Transistor with Dual Modulation of Excitation and Inhibition. Advanced Electronic Materials8 (2022) 2200864.
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