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首页> 外文会议>IEEE International Conference on Flexible and Printable Sensors and Systems >Flexible Strain Sensor based on Printed LC Tank on Electrospun Piezoelectric Nanofibers
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Flexible Strain Sensor based on Printed LC Tank on Electrospun Piezoelectric Nanofibers

机译：基于电纺压电纳米纤维的印刷LC罐的柔性应变传感器

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摘要

This work presents a screen-printed LC resonant tank-based strain sensor. The resonant tank consists of a planar inductor and an interdigitated capacitor connected in parallel. The inductor was screen printed on flexible polyamide substrate and the capacitor is printed on the piezoelectric Poly-L-lactide (PLLA) nanofibers obtained by electrospinning. The resonant frequency of the tank is tuned for ~13.56 MHz. The inductors and capacitors were characterized using an impedance analyzer to evaluate the frequency characteristic of both. As the interdigitated capacitor is realized on a piezoelectric substrate the permittivity and hence the capacitance varies with the application of dynamic pressure. For the dynamic pressure, less than 2 kPa the sensitivity S1 is 8.55 kPa-1. The sensitivities in the range of 2-4 kPa-1 and 4-7 kPa-1 are calculated as S2 = 31.27 kPa-1 and S3 = 8.61 kPa-1 respectively. The fabricated flexible sensor shows the potential for wearable applications such as sub-bandage pressure monitoring while also exploiting the piezoelectric properties of PLLA to accelerate the wound healing through electrical stimulation.
机译：这项工作介绍了一种基于丝网印刷的LC谐振罐的应变传感器。谐振槽由平面电感器和平行连接的互通电容器组成。在柔性聚酰胺基板上印刷电感器，并且电容器印在通过静电纺丝获得的压电聚-L-丙交酯（PLLA）纳米纤维上。罐的谐振频率调谐〜13.56 MHz。电感器和电容器的特征在于使用阻抗分析器来评估两者的频率特性。由于在压电基板上实现了互通电容器，因此介电常数和因此电容随动力压力的应用而变化。对于动态压力，敏感性小于2kPa 1 是8.55 KPA. -1 。敏感度在2-4 kPa的范围内 -1 和4-7 kPa. -1 计算为s 2 = 31.27 KPA. -1 和s 3 = 8.61 KPA. -1 分别。制造的柔性传感器显示了可穿戴应用的潜力，例如子绷带压力监测，同时利用PLLA的压电性能，通过电刺激加速伤口愈合。

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