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A sandpaper-inspired flexible and stretchable resistive sensor for pressure and strain measurement
Organic Electronics ( IF 3.2 ) Pub Date : 2018-06-23 , DOI: 10.1016/j.orgel.2018.06.034
Ashok Chhetry , Partha Sarati Das , Hyosang Yoon , Jae Yeong Park

We report very small shape-factored microstructures developed via a simple and cost-effective approach, enabling a high degree of sensitivity in a low-pressure regime (<2.67 kPa). The surface intertexture on the counter electrode and irregular microstructures with a high surface area developed on the base electrode help reduce the shape factor, allowing the device to deform more easily under pressure. Moreover, the irregular patterns with higher unloaded surface area strengthen the tunneling current sufficiently at low pressure. Furthermore, the fabricated features enable the device to perform as a flexible and stretchable sensing mechanism; the outstanding performance was achieved through a novel and feasible fabrication from a low-surface-energy template without surfactant coating. An ultra-low hysteresis of 3.17%, a high sensitivity of 0.3954 kPa−1, a fast response time of 0.49 s and stability over 6000 cycles were achieved. Finally, the sensing capability was examined by gentle finger tapping and arbitrary movement of the sensor placed on the forefinger. The current platform can be a key component for diverse applications such as muscle movement, speech detection, and health monitoring systems.



中文翻译:

灵感源自砂纸的柔性可拉伸电阻传感器,用于压力和应变测量

我们报告了通过简单且具有成本效益的方法开发的非常小的形状因数的微结构,可在低压状态(<2.67 kPa)下实现高度的灵敏度。对电极上的表面纹理以及在基电极上形成的具有高表面积的不规则微结构有助于减小形状因数,从而使器件在压力下更容易变形。而且,具有较高的空载表面积的不规则图案在低压下充分增强了隧穿电流。此外,所制造的特征使该装置能够充当柔性且可伸展的感测机构。出色的性能是通过没有表面活性剂涂层的低表面能模板通过新颖且可行的制造而实现的。3.17%的超低磁滞,高灵敏度为0。-1,实现了0.49 s的快速响应时间和6000次循环的稳定性。最后,通过轻柔的手指轻敲以及食指上任意放置的传感器来检查其感应能力。当前平台可以是肌肉运动,语音检测和健康监测系统等各种应用程序的关键组件。

更新日期:2018-06-23
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