In this paper, a novel method for the preparation of flexible strain sensors based on multi-walled carbon nanotubes/polydimethylsiloxane (MWCNTs/PDMS) microspheres (MSs) is proposed. The conductive and elastic MWCNTs/PDMS MSs were prepared by the oil-in-water Pickering emulsion mechanism at room temperature which served as the sensing materials. After being covered with the PDMS matrix, the flexible strain sensor was obtained and it exhibited high conductivity of $157.64\Omega \bullet cm$, high strain range of more than 40 %, high sensitivity (GF = 7.22), and high stability (>500 stretch and release cycles). Besides, the as-prepared strain sensor successfully recognized different finger gestures, and the movements of wrists, elbows and knees, which proved the sensor’s application prospects in the fields of human motion detection, electronic skins of bionic robots and human-machine interfaces, etc.

本文提出了一种基于多壁碳纳米管/聚二甲基硅氧烷（MWCNTs / PDMS）微球（MSs）的柔性应变传感器的制备方法。导电和弹性的MWCNTs / PDMS MS是通过室温下的水包油Pickering乳液机理制备的，用作传感材料。用PDMS基质覆盖后，获得了柔性应变传感器，并显示出高电导率。$157.64\Omega \bullet C米$，超过40％的高应变范围，高灵敏度（GF = 7.22）和高稳定性（> 500次拉伸和释放循环）。此外，所制备的应变传感器能够成功识别出不同的手指手势以及手腕，肘部和膝盖的动作，证明了该传感器在人体运动检测，仿生机器人的电子皮肤和人机界面等领域的应用前景。 。