神经形态工程学
材料科学
门控
自愈水凝胶
触觉传感器
非线性系统
仿生学
机器人
纳米技术
人工智能
计算机科学
神经科学
物理
人工神经网络
量子力学
高分子化学
生物
作者
Shuyu Wang,Tianyu Yang,D.Z. Zhang,Qilin Hua,Yuliang Zhao
标识
DOI:10.1002/adma.202405391
摘要
Abstract The human perception system's information processing is intricately linked to the nonlinear response and gating effect of neurons. While piezoionics holds potential in emulating the pressure sensing capability of biological skin, the incorporation of information processing functions seems neglected. Here, ionic gating behavior in piezoionic hydrogels is uncovered as a notable extension beyond the previously observed linear responses. The hydrogel can generate remarkably high voltages (700 mV) and currents (7 mA) when indentation forces surpass the threshold. Through a comprehensive analysis involving simulations and experimental investigations, it is proposed that the gating behavior emerges due to significant diffusion differences between cations and anions. To showcase the practical implications of this breakthrough, the piezoionic hydrogels are successfully integrated with prostheses and robot hands, demonstrating that the gating effect enables accurate discrimination between gentle and harsh touch. The advancement in neuromimetic tactile sensing has significant potential for emerging applications such as humanoid robotics and biomedical engineering, offering valuable opportunities for further development of embodied neuromorphic intelligence.
科研通智能强力驱动
Strongly Powered by AbleSci AI