Fabricating Flexible Strain Sensor with Direct Writing Graphene/Carbon Nanotube Aerogel,ACS Applied Electronic Materials

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Fabricating Flexible Strain Sensor with Direct Writing Graphene/Carbon Nanotube Aerogel
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2023-02-23 , DOI: 10.1021/acsaelm.2c01338
Chen Chen _{1,

2,

3} , Fuqiang Chu ₁ , Yang Zhang ₁ , Mengdi Ma ₁ , Rui Sun ₁ , Peng Jia ₁ , Jiazhen Sun ₁

Affiliation

Flexible strain sensor has wide applications in wearable devices and human–computer interaction. These sensors exhibit a flexible performance, which makes the structure of the device adapt to a wide range of application scenarios. This work proposes a low-cost and accurate direct writing method to fabricate a three-dimensional graphene/carbon nanotube strain sensor by using prepared printing ink with good dispersion, extruding ordered lamellae, and controlling porous aerogel structure. The morphology of the prepared three-dimensional porous aerogel was controlled with the ice template method. The strain sensor could be obtained by encapsulating the PDMS precursor, which shows high stretchability with a sensitivity of 18.55 at a 20% tensile strain. It offers good stability after 900 times of repeated stretching under 20% strain. This study of fabricating flexible strain sensors could provide a facile and effective way to apply intelligent packaging and wearable electronic devices.

中文翻译：

直写石墨烯/碳纳米管气凝胶制备柔性应变传感器

柔性应变传感器在可穿戴设备和人机交互中有着广泛的应用。这些传感器表现出灵活的性能，这使得设备的结构能够适应广泛的应用场景。这项工作提出了一种低成本和精确的直写方法来制造三维石墨烯/碳纳米管应变传感器，通过使用制备的具有良好分散性的印刷油墨，挤出有序的片晶，并控制多孔气凝胶结构。采用冰模板法控制制备的三维多孔气凝胶的形貌。应变传感器可以通过封装 PDMS 前体获得，它显示出高拉伸性，在 20% 的拉伸应变下灵敏度为 18.55。在 20% 应变下反复拉伸 900 次后具有良好的稳定性。

更新日期：2023-02-23

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