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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Wearable Flexible Strain Sensor Based on Three-Dimensional Wavy Laser-Induced Graphene and Silicone Rubber
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Wearable Flexible Strain Sensor Based on Three-Dimensional Wavy Laser-Induced Graphene and Silicone Rubber

机译：可穿戴柔性应变传感器基于三维波浪激光诱导的石墨烯和硅橡胶

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摘要

Laser-induced graphene (LIG) has the advantages of one-step fabrication, prominent mechanical performance, as well as high conductivity; it acts as the ideal material to fabricate flexible strain sensors. In this study, a wearable flexible strain sensor consisting of three-dimensional (3D) wavy LIG and silicone rubber was reported. With a laser to scan on a polyimide film, 3D wavy LIG could be synthesized on the wavy surface of a mold. The wavy-LIG strain sensor was developed by transferring LIG to silicone rubber substrate and then packaging. For stress concentration, the ultimate strain primarily took place in the troughs of wavy LIG, resulting in higher sensitivity and less damage to LIG during stretching. As a result, the wavy-LIG strain sensor achieved high sensitivity (gauge factor was 37.8 in a range from 0% to 31.8%, better than the planar-LIG sensor), low hysteresis (1.39%) and wide working range (from 0% to 47.7%). The wavy-LIG strain sensor had a stable and rapid dynamic response; its reversibility and repeatability were demonstrated. After 5000 cycles, the signal peak varied by only 2.32%, demonstrating the long-term durability. Besides, its applications in detecting facial skin expansion, muscle movement, and joint movement, were discussed. It is considered a simple, efficient, and low-cost method to fabricate a flexible strain sensor with high sensitivity and structural robustness. Furthermore, the wavy-LIG strain senor can be developed into wearable sensing devices for virtual/augmented reality or electronic skin.
机译：激光诱导的石墨烯（LIG）具有一步制造的优点，突出的机械性能以及高导电性;它充当制造柔性应变传感器的理想材料。在该研究中，报道了由三维（3D）波浪LIG和硅橡胶组成的可穿戴柔性应变传感器。通过激光扫描聚酰亚胺膜，可以在模具的波浪表面上合成3D波浪利格。通过将Lig转移到硅橡胶基板然后包装来开发波浪Lig应变传感器。对于应力浓度，极限菌株主要发生在波浪状的槽中，导致在拉伸期间较高的灵敏度和对Lig的损害较小。结果，波浪Lig应变传感器实现了高灵敏度（仪表因子为37.8的范围为0％至31.8％，比平面Lig传感器更好），低滞后（1.39％）和宽的工作范围（从0 ％至47.7％）。波浪Lig应变传感器具有稳定且快速的动态响应;其可逆性和可重复性得到了证明。 5000次循环后，信号峰值仅为2.32％，展示了长期耐久性。此外，讨论了其在检测面部皮肤膨胀，肌肉运动和联合运动方面的应用。它被认为是制造具有高灵敏度和结构稳健性的柔性应变传感器的简单，有效和低成本的方法。此外，波浪状况传感器可以开发成用于虚拟/增强现实或电子皮肤的可穿戴传感装置。

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