Flexible strain sensors have attracted wide attention to the field of applications on wearable electronic devices. However, they still have numerous defects, such as low linearity and low sensitivity. In this paper, high-elastic polybutylene terephthalate (PBT) melt-blown non-woven fabric (MB) was chosen as the substrate of the strain sensor. The reduced graphene oxide (rGO) and silver nanowires (AgNWs) were loaded on the PBT MB surface by simple ultrasonic treatments to form a dense and stable conductive path. The sensing properties of the sensors loaded with the different concentration load ratios of rGO and AgNWs were studied and the best load ratio was 1:0.9. The results showed that the sensor has excellent sensing characteristics, including wide range of applications (90 %), extremely high sensitivity (guage factor (GF) up to 1829 at 80 % strain). Finally, the strain sensor has demonstrated in monitoring an assortment of human-exercises even some subtle physiological signals.

柔性应变传感器已经在可穿戴电子设备上引起了广泛的关注。然而，它们仍然具有许多缺陷，例如低线性和低灵敏度。本文选择高弹性聚对苯二甲酸丁二醇酯（PBT）熔喷无纺布（MB）作为应变传感器的基材。通过简单的超声处理将还原后的氧化石墨烯（rGO）和银纳米线（AgNWs）负载在PBT MB表面上，以形成致密且稳定的导电路径。研究了rGO和AgNWs的不同浓度负载比对传感器的传感特性，最佳负载比为1：0.9。结果表明，该传感器具有出色的感测特性，包括广泛的应用（90％），极高的灵敏度（在80％应变下，测量因子（GF）高达1829）。最终，应变传感器在监视各种各样的人类运动（甚至是一些微妙的生理信号）中也得到了证明。