Wang Lu, Xie Jiachu, Su Wantao, Du Zhenjie, Zhang Mingzhu
School of Electronic Engineering, Heilongjiang University, Harbin 150080, China.
Nanomaterials (Basel). 2025 Apr 26;15(9):659. doi: 10.3390/nano15090659.
This work presents a memristive device based on a composite of Scindapsus aureus (SA) and gold nanoparticles (Au NPs), which exhibits excellent resistive switching characteristics and supports multiple forms of synaptic plasticity such as paired-pulse facilitation (PPF), spike-rate-dependent plasticity (SRDP), and spike-timing-dependent plasticity (STDP). The device demonstrates reliable retention, reproducibility, and switching stability. The SA:Au NP composite originates from a natural plant source and possesses green, biodegradable, and biocompatible features, highlighting its potential as a sustainable bio-memristive material for neuromorphic systems. Furthermore, the device exhibits sensitivity to the time interval between paired input pulses, simulating the neural response to interaural time differences (ITDs) in the auditory system. Although not a conventional acoustic sensor, its Δt-responsiveness based on synaptic behavior reveals promising potential in neuromorphic auditory perception and perceptual computing applications. This study provides a foundational synaptic unit for future artificial hearing systems capable of spatial sound localization.
这项工作展示了一种基于绿萝（SA）和金纳米颗粒（Au NPs）复合材料的忆阻器件，该器件具有优异的电阻开关特性，并支持多种形式的突触可塑性，如双脉冲易化（PPF）、脉冲率依赖性可塑性（SRDP）和脉冲时间依赖性可塑性（STDP）。该器件表现出可靠的保持性、可重复性和开关稳定性。SA:Au NP复合材料源自天然植物源，具有绿色、可生物降解和生物相容性等特性，突出了其作为神经形态系统可持续生物忆阻材料的潜力。此外，该器件对成对输入脉冲之间的时间间隔表现出敏感性，模拟了听觉系统中对耳间时间差（ITD）的神经反应。尽管它不是传统的声学传感器，但其基于突触行为的Δt响应性在神经形态听觉感知和感知计算应用中显示出有前景的潜力。这项研究为未来能够进行空间声音定位的人工听觉系统提供了一个基础突触单元。
