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首页> 外文期刊>ACS applied materials & interfaces >Water-Borne Fabrication of Stretchable and Durable Microfibers for High-Performance Underwater Strain Sensors
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Water-Borne Fabrication of Stretchable and Durable Microfibers for High-Performance Underwater Strain Sensors

机译：用于高性能水下应变传感器的可拉伸和耐用微纤维的水性制造

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摘要

The development of stretchable strain sensors having high linearity and sensitivity, low hysteresis, and fast response to reliably monitor fast human motions is challenging. In this study, hydrogel-based strain sensors in the form of microfibers comprising tough double-network hydrogels or organogels and multi-walled carbon nanotubes (CNTs) are fabricated using aqueous microfluidic devices. Owing to the shear thinning effect on the microchannel, the CNTs can be aligned parallel to the flow direction, which increases the linearity of the sensor up to a strain of 400% and provides high durability over 50,000 strain cycles at 300% elongation. Owing to the negligible hysteresis, high resolution of 0.1%, and low response time of similar to 30 ms, the strain sensors enable the quantitative conversion of the measured resistance change to the extent of stimulus and the simple detection of the motion. The developed sensors can be stably used to detect human motions in real time in both air and water. Furthermore, the developed material system demonstrates the potential for use in the fabrication of pressure sensors.
机译：伸展菌株的开发具有高线性度和敏感性，低滞后和快速响应，以可靠地监测快速人体运动是具有挑战性的。在该研究中，使用具有坚韧的双网络水凝胶或有机凝胶和多壁碳纳米管（CNT）的微纤维形式的水凝胶基菌株传感器使用微流体装置制造。由于对微通道的剪切薄效应，CNT可以平行于流动方向对准，这增加了传感器的线性度高达400％的应变，并在300％伸长率下提供超过50,000个应变循环的高耐久性。由于可忽略不计的滞后，高分辨率为0.1％，低响应时间与30ms相似，应变传感器使得测量电阻变化的定量转化为刺激程度和运动的简单检测。开发的传感器可以稳定地用于在空气和水中实时检测人类运动。此外，开发的材料系统演示了在压力传感器的制造中使用的可能性。

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