PDMS-ZnO Piezoelectric Nanocomposites for Pressure Sensors.
PDMS-ZnO Piezoelectric Nanocomposites for Pressure Sensors.
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DOI：
10.3390/s21175873
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发表时间：
2021-08-31
期刊：
影响因子：
--
通讯作者：
Mastropaolo E
中科院分区：
文献类型：
--
作者：
Jeronimo K;Koutsos V;Cheung R;Mastropaolo E
将压电氧化锌（ZnO）填料添加到柔性聚合物基质中已成为潜在的压电复合材料，可用于能量采集器和压力传感器等应用。本文提出了一种基于两种ZnO填料：纳米颗粒（NP）和纳米花（NF）制备PDMS-ZnO压电纳米复合材料的简单方法。讨论了ZnO填料的几何形状和尺寸对材料热性能、力学性能和压电性能的影响。该传感器采用铝（Al）薄膜作为上下电极，制作成类金属结构。浓度为10%w/w的压电复合材料显示出良好的柔性，在压缩力下产生压电响应。NF压电复合材料表现出最高的压电响应相比，NP压电复合材料，由于其几何连接。在约36 kPa压力下，压电化合物NF产生4.2V，而NP产生1.86V。数据还表明，无论填料的类型如何，产生的电压都随着施加的力的增加而增加。
The addition of piezoelectric zinc oxide (ZnO) fillers into a flexible polymer matrix has emerged as potential piezocomposite materials that can be used for applications such as energy harvesters and pressure sensors. A simple approach for the fabrication of PDMS-ZnO piezoelectric nanocomposites based on two ZnO fillers: nanoparticles (NP) and nanoflowers (NF) is presented in this paper. The effect of the ZnO fillers’ geometry and size on the thermal, mechanical and piezoelectric properties is discussed. The sensors were fabricated in a sandwich-like structure using aluminium (Al) thin films as top and bottom electrodes. Piezocomposites at a concentration of 10% w/w showed good flexibility, generating a piezoelectric response under compression force. The NF piezocomposites showed the highest piezoelectric response compared to the NP piezocomposites due to their geometric connectivity. The piezoelectric compound NF generated 4.2 V while the NP generated 1.86 V under around 36 kPa pressure. The data also show that the generated voltage increases with increasing applied force regardless of the type of filler.
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