Highly Sensitive Paper-Based Force Sensors with Natural Micro-Nanostructure Sensitive Element

电容感应 电阻式触摸屏 制作 压力传感器 灵敏度(控制系统) 纳米技术 纳米结构 数码产品 计算机科学 材料科学 导电体 可穿戴计算机 电子工程 机械工程 电气工程 工程类 嵌入式系统 医学 替代医学 病理 复合材料 计算机视觉 操作系统
作者
Haozhe Zhang,Yuyu Ren,Junwen Zhu,Yanshen Jia,Qiang Liu,Xing Yang
出处
期刊:Nanomaterials [Multidisciplinary Digital Publishing Institute]
卷期号:14 (4): 358-358
标识
DOI:10.3390/nano14040358
摘要

Flexible paper-based force sensors have garnered significant attention for their important potential applications in healthcare wearables, portable electronics, etc. However, most studies have only used paper as the flexible substrate for sensors, not fully exploiting the potential of paper’s micro-nanostructure for sensing. This article proposes a novel approach where paper serves both as the sensitive element and the flexible substrate of force sensors. Under external mechanical forces, the micro-nanostructure of the conductive-treated paper will change, leading to significant changes in the related electrical output and thus enabling sensing. To demonstrate the feasibility and universality of this new method, the article takes paper-based capacitive pressure sensors and paper-based resistive strain sensors as examples, detailing their fabrication processes, constructing sensing principle models based on the micro-nanostructure of paper materials, and testing their main sensing performance. For the capacitive paper-based pressure sensor, it achieves a high sensitivity of 1.623 kPa−1, a fast response time of 240 ms, and a minimum pressure resolution of 4.1 Pa. As for the resistive paper-based strain sensor, it achieves a high sensitivity of 72 and a fast response time of 300 ms. The proposed new method offers advantages such as high sensitivity, simplicity in the fabrication process, environmental friendliness, and cost-effectiveness, providing new insights into the research of flexible force sensors.
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