Analytical Model of the Piezoresistive Behavior of Highly Compressible Sensors Made of Microporous Nanocomposites,Advanced Theory and Simulations

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Analytical Model of the Piezoresistive Behavior of Highly Compressible Sensors Made of Microporous Nanocomposites
Advanced Theory and Simulations ( IF 2.9 ) Pub Date : 2021-10-18 , DOI: 10.1002/adts.202100247
Jianpeng Zhang ₁ , Ziya Wang ₂ , Zhengchun Peng ₁

Affiliation

Microporous conductive nanocomposites, compared with conventional filler-matrix composites, enable flexible piezoresistive sensors with higher sensitivity and a larger measurement range. Previous research focuses on different methods of fabricating porous materials that are highly sensitive to pressure, however, there is only a small amount of research studying the mechanism of those sensors. Without an appropriate theoretical guide, relying on expensive experimental approaches to enhance the sensitivity will significantly limit the advancement of this technology. This article proposes an efficient analytical model, with some parameters determined from experiments, to investigate the piezoresistive behaviors of microporous nanocomposites. The predicted results agree well with the analysis from finite element models as well as the experimental data. Moreover, scaling law is applied to study the effect of geometry, material, and interface on the sensitivity of the sensor. This study establishes the theoretical foundation for the design of a high-performance piezoresistive sensor based on microporous nanocomposites.

中文翻译：

由微孔纳米复合材料制成的高度可压缩传感器的压阻行为分析模型

与传统的填料基质复合材料相比，微孔导电纳米复合材料使柔性压阻传感器具有更高的灵敏度和更大的测量范围。以前的研究侧重于制造对压力高度敏感的多孔材料的不同方法，但是，只有少量研究研究了这些传感器的机制。如果没有适当的理论指导，依靠昂贵的实验方法来提高灵敏度将大大限制这项技术的进步。本文提出了一种有效的分析模型，其中一些参数由实验确定，以研究微孔纳米复合材料的压阻行为。预测结果与有限元模型分析和实验数据吻合良好。此外，缩放定律被应用于研究几何、材料和界面对传感器灵敏度的影响。本研究为基于微孔纳米复合材料的高性能压阻传感器的设计奠定了理论基础。

更新日期：2021-12-07

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