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Flexible Dual-Mechanism Pressure Sensor Based on Ag Nanowire Electrodes for Nondestructive Grading and Quality Monitoring of Fruits
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2022-07-26 , DOI: 10.1021/acsanm.2c01968
Jie Xia 1 , Xuepei Wang 1, 2 , Junchang Zhang 1 , Chuiyu Kong 1 , Wentao Huang 3 , Xiaoshuan Zhang 1
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2022-07-26 , DOI: 10.1021/acsanm.2c01968
Jie Xia 1 , Xuepei Wang 1, 2 , Junchang Zhang 1 , Chuiyu Kong 1 , Wentao Huang 3 , Xiaoshuan Zhang 1
Affiliation
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To extend the application range of flexible pressure sensors and to be widely used as an economical and convenient way, researchers have made efforts toward high sensitivity, wide detection range, and low power consumption. However, most sensors can only work based on a single mechanism, thus limiting the sensing range and applicability. In view of this, we developed a dual-mechanism pressure sensor (DMPS) based on Ag nanowire/PDMS electrodes and ZnO nanoparticle-based force-sensitive membranes, which has a sandwich structure and complete flexibility under the effect of chemical bonding. It can simultaneously sense high-frequency dynamic pressure as well as static load by integrating piezoelectric and piezocapacitive effects, thereby complementing the inability of conventional piezoelectric-type sensors to continuously detect static pressure. The prepared flexible DMPS containing 20 wt % ZnO nanofiller has a pressure frequency-independent electrical output of about 2 V under 20 N force conditions and also has a long-term stability of more than 5000 pressure cycles. Moreover, it exhibits good linearity, repeatability, and stability in the 0–100 kPa detection range in the piezocapacitive mode. On the basis of multimechanism and modularity, the flexible DMPS was demonstrated for fruit quality monitoring, including avocado ripeness grading, tactile sensory gloves, and moisture loss assessment, indicating its promising applications in intelligent agricultural machines and wearable sensing systems.
中文翻译：
基于银纳米线电极的柔性双机制压力传感器用于水果无损分级和质量监测
为了扩大柔性压力传感器的应用范围并作为一种经济便捷的方式得到广泛应用，研究人员一直致力于高灵敏度、宽检测范围和低功耗。然而，大多数传感器只能基于单一机制工作，从而限制了传感范围和适用性。有鉴于此，我们开发了一种基于Ag纳米线/PDMS电极和ZnO纳米粒子基力敏膜的双机制压力传感器（DMPS），在化学键合的作用下具有三明治结构和完全的柔性。它通过集成压电和压电电容效应，可以同时感应高频动压和静载荷，从而弥补了传统压电式传感器无法连续检测静压的不足。所制备的含有 20 wt % ZnO 纳米填料的柔性 DMPS 在 20 N 力条件下具有与压力频率无关的电输出约为 2 V，并且还具有超过 5000 次压力循环的长期稳定性。此外，它在压电电容模式下的 0–100 kPa 检测范围内表现出良好的线性、重复性和稳定性。在多机制和模块化的基础上，展示了灵活的 DMPS 用于水果质量监测，包括鳄梨成熟度分级、触觉感官手套和水分损失评估，表明其在智能农业机械和可穿戴传感系统中的应用前景广阔。
更新日期：2022-07-26
中文翻译：
基于银纳米线电极的柔性双机制压力传感器用于水果无损分级和质量监测
为了扩大柔性压力传感器的应用范围并作为一种经济便捷的方式得到广泛应用，研究人员一直致力于高灵敏度、宽检测范围和低功耗。然而，大多数传感器只能基于单一机制工作，从而限制了传感范围和适用性。有鉴于此，我们开发了一种基于Ag纳米线/PDMS电极和ZnO纳米粒子基力敏膜的双机制压力传感器（DMPS），在化学键合的作用下具有三明治结构和完全的柔性。它通过集成压电和压电电容效应，可以同时感应高频动压和静载荷，从而弥补了传统压电式传感器无法连续检测静压的不足。所制备的含有 20 wt % ZnO 纳米填料的柔性 DMPS 在 20 N 力条件下具有与压力频率无关的电输出约为 2 V，并且还具有超过 5000 次压力循环的长期稳定性。此外，它在压电电容模式下的 0–100 kPa 检测范围内表现出良好的线性、重复性和稳定性。在多机制和模块化的基础上，展示了灵活的 DMPS 用于水果质量监测，包括鳄梨成熟度分级、触觉感官手套和水分损失评估，表明其在智能农业机械和可穿戴传感系统中的应用前景广阔。
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