Multidimensional force-sensing stretchable electronic skins made of nanomaterials with low-dimensional morphologies are of great importance in the fields of robotics, rehabilitation, and prosthetics. Herein, we report a carbon nanotube (CNT) based strain sensor with a unique alignment to detect multidirectional strains. Radially aligned CNTs sealed between polydimethylsiloxane layers exhibit a gauge factor (GF) that is comparatively better than that of a conventional CNT-based sensor. The optimum concentration of radially aligned CNTs limits the conduction path of electrons which, in turn, improves the sensitivity of the sensor. To tune the GF further, a tape-peeling method is used which not only increases the GF of the device but also improves its transparency. When attached to the human skin, the sensor can differentiate between different types of deformation. The sensor can also be employed in multichannel, interactive electronic robotics systems. It can also has potential for application as a wearable detector for human motion such as bionic ligaments in soft robotics.

由具有低维形态的纳米材料制成的多维力传感可拉伸电子皮肤在机器人、康复和假肢领域具有重要意义。在此，我们报告了一种基于碳纳米管 (CNT) 的应变传感器，该传感器具有独特的对齐方式以检测多向应变。密封在聚二甲基硅氧烷层之间的径向排列的 CNT 表现出比传统的基于 CNT 的传感器更好的应变系数 (GF)。径向排列的碳纳米管的最佳浓度限制了电子的传导路径，从而提高了传感器的灵敏度。为了进一步调整 GF，使用了胶带剥离方法，这不仅增加了器件的 GF，还提高了其透明度。当附着在人体皮肤上时，传感器可以区分不同类型的变形。该传感器还可用于多通道、交互式电子机器人系统。它还可以用作人体运动的可穿戴检测器，例如软机器人中的仿生韧带。