将 MIL-125 金属有机框架与柔性三电纳米发电机和自供电传感器相结合,用于机器人抓手

Alibek Kakim, Ayan Nurkesh, Bayandy Sarsembayev, Daniyar Dauletiya, Azat Balapan, Zhumabay Bakenov, Azamat Yeshmukhametov, Gulnur Kalimuldina
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引用次数: 0

摘要

三电纳米发电机(TENGs)作为生物力学能量收集器为小型电子设备供电,以及作为自供电传感器为压力、运动、振动、风、波、生物医学信息和化学物质检测供电,正变得越来越流行。在这项研究中,TENG 的设计采用了生物兼容材料,并优化了其组件的浓度,以产生更高的功率,用作能源和触觉传感器。该工艺涉及使用金属有机框架(MOFs),即 MIL-125,它具有很强的电荷诱导和电荷捕获能力,并融入了商用 Ecoflex 基质中。电学特性分析表明,样品中 0.25 wt% 的 MIL-125(0.25%MOF/Ecoflex)是基质中的最佳浓度,其输出分别高达 305 V 和 13 µA。此外,所提出的柔性 TENG 还能将机械能转化为电能,其最大功率密度为 150 µW cm-2(1.5 W m-2),是基于原始 Ecoflex 的同类产品的两倍多。在连续 20 万次循环测试过程中,TENG 显示出强大而稳定的性能,没有出现明显的性能衰减。此外,0.25%MOF/Ecoflex TENG 还能为计算器、湿度传感器和心脏起搏器等小型电子设备供电。利用自供电的 0.25%MOF/Ecoflex TENG 传感器,通过机器学习训练识别各种物体的机器人抓手也研制成功。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Incorporating MIL-125 Metal-Organic Framework for Flexible Triboelectric Nanogenerators and Self-Powered Sensors for Robotic Grippers

Incorporating MIL-125 Metal-Organic Framework for Flexible Triboelectric Nanogenerators and Self-Powered Sensors for Robotic Grippers

Triboelectric nanogenerators (TENGs) are getting popular as biomechanical energy harvesters to power small electronic devices and as self-powered sensors for pressure, motion, vibration, wind, waves, biomedical information, and chemical substance detections. In this study, the TENG is designed with biocompatible materials, and concentrations of its components have been optimized to generate higher power for application as an energy source and tactile sensor. The process involves using metal-organic frameworks (MOFs), namely MIL-125, with high charge-inducing and charge-trapping capabilities incorporated into the commercial Ecoflex matrix. Electrical characterization demonstrated that the sample with 0.25 wt% MIL-125 (0.25%MOF/Ecoflex) is the optimal concentration in the matrix with an output of up to 305 V and 13 µA, respectively. Moreover, the proposed flexible TENG converts mechanical energy to electrical, with a maximum power density of 150 µW cm−2 (1.5 W m−2), which is more than twice superior to the pristine Ecoflex-based counterparts. The TENG shows robust and stable performance without noticeable degradation during continuous 200,000 cyclic testing. Furthermore, 0.25%MOF/Ecoflex TENG can power small electronic devices such as calculators, humidity sensors, and cardiac pacemakers. A robotic gripper trained via machine learning to identify various objects is also successfully developed with a self-powered 0.25%MOF/Ecoflex TENG sensor.

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