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High resolution screen-printing of carbon black/carbon nanotube composite for stretchable and wearable strain sensor with controllable sensitivity
Sensors and Actuators A: Physical ( IF 4.1 ) Pub Date : 2021-09-15 , DOI: 10.1016/j.sna.2021.113098
Myeongjong Go , Xue Qi , Paolo Matteini , Byungil Hwang , Sooman Lim

With the growing trend of accelerating sensor miniaturization, high-resolution printing technology of stretchable sensors is becoming increasingly important. In this study, we demonstrated stretchable strain sensor with various line resolutions from 50 to 500 μm based on CB/CNT composite using screen printing process for human motion detection. To optimize composite formula, we systematically investigated rheological properties of the composites, resulting in realization of screen printed pattens with 50–500 μm of line width; and also investigated the relation among printed line width, resistance, conductivity, and line thickness. The printed pattern elastic strain sensor exhibited a controllable gauge factor (G.F.) such as 2.6 at 5% strain and 4.1 at 50% strain for linewidths of 50 and 500 μm, respectively, for accurate human motion detection and stable performance was also detected for 300 bending tests. From the result of this study, we proved that the printed pattern can be a potential stretchable strain sensor with controllable sensitivity and high resistance to temperature change.



中文翻译:

炭黑/碳纳米管复合材料的高分辨率丝网印刷,用于具有可控灵敏度的可拉伸和可穿戴应变传感器

随着加速传感器小型化的趋势越来越大,可拉伸传感器的高分辨率打印技术变得越来越重要。在这项研究中,我们展示了具有从 50 到 500 的各种线分辨率的可拉伸应变传感器μm 基于 CB/CNT 复合材料,使用丝网印刷工艺进行人体运动检测。为了优化复合材料配方,我们系统地研究了复合材料的流变性能,从而实现了 50-500μ线宽m;并研究了印刷线宽、电阻、电导率和线厚之间的关系。印刷图案弹性应变传感器表现出可控的应变系数 (GF),例如 5% 应变时为 2.6,50% 应变时为 4.1,线宽为 50 和 500μm 分别用于准确的人体运动检测和稳定的性能还检测到 300 次弯曲测试。从这项研究的结果中,我们证明了印刷图案可以成为一种潜在的可拉伸应变传感器,具有可控的灵敏度和对温度变化的高抵抗力。

更新日期:2021-09-29
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