High stretchability and sensitivity are the major desired requirements of strain sensors for wearable electronics applications, especially in health and medical monitoring. Herein, a highly sensitive and stretchable strain sensor based on conductive poly(styrene-butadienestyrene)/few layer graphene (SBS/FLG) composite fiber is fabricated through an easy and scalable wet-spinning process. Owing to the super flexibility of SBS matrix and the excellent electrical and mechanical properties of FLG, the SBS/FLG fiber based strain sensor revealed superior performance, including wide workable strain range (>110%), superior sensitivity (gauge factor of 160 at a strain of 50% and of 2546 at a strain of 100%), and durability. Furthermore, the mechanism behind the excellent performances of SBS/FLG fiber based sensors is discussed in detail.

对于可穿戴电子应用，特别是在健康和医疗监控中，应变传感器的主要要求是高拉伸性和灵敏度。在此，通过简单且可扩展的湿纺工艺制造了基于导电聚（苯乙烯-丁二烯-苯乙烯）/少量层石墨烯（SBS / FLG）复合纤维的高灵敏性和可拉伸应变传感器。由于SBS基体的超柔韧性和FLG的优异的电气和机械性能，基于SBS / FLG纤维的应变传感器显示出卓越的性能，包括宽的可工作应变范围（> 110％），出色的灵敏度（在室温下160的应变系数） 50％和2546（100％应变）和耐久性。此外，详细讨论了基于SBS / FLG光纤的传感器出色性能背后的机理。