Department of Mechanical and Manufacturing Engineering, ‡Department of Biochemistry and Medical Genetics, §Children's Hospital Research Institute of Manitoba, University of Manitoba , Winnipeg, Manitoba, Canada , R3T 5V6.
ACS Appl Mater Interfaces. 2015 Dec 2;7(47):26195-205. doi: 10.1021/acsami.5b08276. Epub 2015 Nov 17.
Presented in this work is a novel and facile approach to fabricate an elastic, attachable, and cost-efficient carbon nanotube (CNT)-based strain gauge which can be efficiently used as bodily motion sensors. An innovative and unique method is introduced to align CNTs without external excitations or any complicated procedure. In this design, CNTs are aligned and distributed uniformly on the entire chewing gum by multiple stretching and folding technique. The current sensor is demonstrated to be a linear strain sensor for at least strains up to 200% and can detect strains as high as 530% with a high sensitivity ranging from 12 to 25 and high durability. The gum sensor has been used as bodily motion sensors, and outstanding results are achieved; the sensitivity is quite high, capable of tracing slow breathing. Since the gum sensor can be patterned into various forms, it has wide applications in miniaturized sensors and biochips. Interestingly, we revealed that our gum sensor has the ability to monitor humidity changes with high sensitivity and fast resistance response capable of monitoring human breathing.
本工作提出了一种新颖而简便的方法来制造弹性、可附着且具有成本效益的基于碳纳米管（CNT）的应变计，可有效地用作身体运动传感器。引入了一种创新且独特的方法，无需外部激励或任何复杂的程序即可对 CNT 进行对齐。在该设计中，通过多次拉伸和折叠技术将 CNT 排列并均匀分布在整个口香糖上。电流传感器被证明是一种线性应变传感器，至少在应变高达 200%的情况下具有高灵敏度（范围为 12 至 25）和高耐久性，可检测高达 530%的应变。该口香糖传感器已被用作身体运动传感器，取得了出色的效果；灵敏度非常高，能够追踪缓慢的呼吸。由于口香糖传感器可以制成各种形式，因此它在小型化传感器和生物芯片中有广泛的应用。有趣的是，我们发现我们的口香糖传感器具有高灵敏度监测湿度变化和快速电阻响应的能力，能够监测人类呼吸。
