State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics & Systems, School of Microelectronics, Fudan University, Shanghai 200433, China.
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China.
ACS Appl Mater Interfaces. 2021 Sep 29;13(38):45924-45934. doi: 10.1021/acsami.1c06993. Epub 2021 Sep 14.
Skin-like electronics that can provide comprehensively tactile sensing is required for applications such as soft robotics, health monitoring, medical treatment, and human-machine interfaces. In particular, the capacity to monitor the contact parameters such as the magnitude, direction, and contact location of external forces is crucial for skin-like tactile sensing devices. Herein, a flexible electronic skin which can measure and discriminate the contact parameters in real time is designed. It is fabricated by integrating the three-dimensional (3D) hollow MXene spheres/Ag NW hybrid nanocomposite-based embedded stretchable electrodes and T-ZnOw/PDMS film-based capacitive pressure sensors. To the best of our knowledge, it is the first stretchable electrode to utilize the 3D hollow MXene spheres with the essential characteristic, which can effectively avoid the drawbacks of stress concentration and shedding of the conductive layer. The strain-resistance module and the pressure-capacitance module show the excellent sensing performance in stability and response time, respectively. Moreover, a 6 × 6 sensor array is used as a demonstration to prove that it can realize the multiplex detection of random external force stimuli without mutual interference, illustrating its potential applications in biomimetic soft wearable devices, object recognition, and robotic manipulation.
需要具有全面触觉感应功能的类皮肤电子产品，以应用于软机器人、健康监测、医疗和人机界面等领域。特别是，能够监测外部力的接触参数，如大小、方向和接触位置，对于类皮肤触觉感应设备至关重要。在此，设计了一种可实时测量和区分接触参数的柔性电子皮肤。它是通过集成基于三维（3D）空心 MXene 球/Ag NW 混合纳米复合材料的嵌入式可拉伸电极和 T-ZnOw/PDMS 薄膜电容式压力传感器来制造的。据我们所知，这是第一个利用具有重要特性的 3D 空心 MXene 球的可拉伸电极，可以有效地避免导电层的应力集中和脱落的缺点。应变电阻模块和压力电容模块在稳定性和响应时间方面均表现出出色的传感性能。此外，还使用 6×6 传感器阵列进行了演示，证明其可以实现随机外力刺激的多路复用检测，而不会相互干扰，表明其在仿生软可穿戴设备、物体识别和机器人操作方面具有潜在应用。
