College of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China.
Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China.
Sensors (Basel). 2017 Nov 14;17(11):2621. doi: 10.3390/s17112621.
Wearable sensors for detection of human activities have encouraged the development of highly elastic sensors. In particular, to capture subtle and large-scale body motion, stretchable and wide-range strain sensors are highly desired, but still a challenge. Herein, a highly stretchable and transparent stain sensor based on ionic liquids and elastic polymer has been developed. The as-obtained sensor exhibits impressive stretchability with wide-range strain (from 0.1% to 400%), good bending properties and high sensitivity, whose gauge factor can reach 7.9. Importantly, the sensors show excellent biological compatibility and succeed in monitoring the diverse human activities ranging from the complex large-scale multidimensional motions to subtle signals, including wrist, finger and elbow joint bending, finger touch, breath, speech, swallow behavior and pulse wave.
可穿戴传感器用于人体活动检测，这推动了高弹性传感器的发展。特别地，为了捕捉细微和大幅度的身体运动，人们非常希望开发具有拉伸性和宽应变范围的应变传感器，但这仍然是一个挑战。本文报道了一种基于离子液体和弹性聚合物的高拉伸性和透明应变传感器。所得到的传感器具有令人印象深刻的拉伸性，可实现大范围应变（从 0.1%到 400%），良好的弯曲性能和高灵敏度，其应变系数可达 7.9。重要的是，该传感器具有优异的生物相容性，并成功地监测了从复杂的大规模多维运动到细微信号的各种人体活动，包括手腕、手指和肘部弯曲、手指触摸、呼吸、说话、吞咽行为和脉搏波。
