基于mwcnt增强聚氯乙烯凝胶的抓手接触感知压电传感器。

IF 3.9 3区 医学 Q1 ENGINEERING, MULTIDISCIPLINARY
Qiyun Zhong, Qingsong He, Diyi Liu, Xinyu Lu, Siyuan Liu, Yuze Ye, Yefu Wang
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引用次数: 0

摘要

传统的水凝胶易受水分蒸发和结构降解的影响,而非水凝胶材料具有优异的稳定性和一致的性能。在这里,我们报告了一种创新的压电聚氯乙烯/多壁碳纳米管聚合物凝胶(PVC/MWCNT聚合物凝胶,PMPG),具有出色的线性度(低至1.31%),高灵敏度(50-310.17 mV),快速响应(172-189 ms)和热稳定性。在应变诱导下,PMPG中偶极子的有序重排和MWCNTs的增强产生了电位差。增加MWCNT含量可以提高输出电压、灵敏度、电导率、最大应力、杨氏模量和韧性,同时减少非线性误差。高的己二酸二丁酯(DBA)含量会增加输出电压并略微提高灵敏度,但会降低机械强度。最佳PMPG (PVC:DBA = 1:5, wt% MWCNTs)表现出优异的性能。其非线性误差低至1.31%,电导率为25.4 μS/cm,压缩应变容限为80% (273 kPa应力),在空气中保持90天的尺寸稳定性。通过将PMPG与机器学习算法相结合,软机器人抓取器获得了先进的接触感知能力,可用于医学、救援、勘探和其他需要精细操作和适应性的领域。这项工作突出了PMPG作为一种稳定、高性能的软机器人材料及其他领域的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Piezoelectric Sensor Based on MWCNT-Enhanced Polyvinyl Chloride Gel for Contact Perception of Grippers.

In contrast to traditional hydrogels, which are susceptible to water evaporation and structural degradation, non-hydrogel materials are engineered for superior stability and consistent performance. Here, we report an innovative piezoelectric polyvinyl chloride/multi-walled carbon nanotube polymer gel (PVC/MWCNT polymer gel, PMPG) with exceptional linearity (as low as 1.31%), high sensitivity (50-310.17 mV), rapid response (172-189 ms), and thermal stability. Under strain induction, ordered rearrangement of dipoles in PMPG and the enhancement of MWCNTs generate a potential difference. Increasing MWCNT content enhances output voltage, sensitivity, conductivity, maximum stress, Young's modulus, and toughness, while reducing nonlinear error. Higher dibutyl adipate (DBA) content increases output voltage and slightly improves sensitivity but decreases mechanical strength. The optimal PMPG (PVC:DBA = 1:5, 1 wt% MWCNTs) exhibited outstanding performance. It exhibits a nonlinear error as low as 1.31%, a conductivity of 25.4 μS/cm, an 80% compressive strain tolerance (273 kPa stress), and dimensional stability for 90 days in air. By integrating PMPG with machine learning algorithms, soft robotic grippers gain advanced contact perception capabilities, enabling applications in medicine, rescue, exploration, and other fields requiring fine manipulation and adaptability. This work highlights PMPG's potential as a stable, high-performance material for soft robotics and beyond.

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来源期刊
Biomimetics
Biomimetics Biochemistry, Genetics and Molecular Biology-Biotechnology
CiteScore
3.50
自引率
11.10%
发文量
189
审稿时长
11 weeks
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