Zhang Yuan, Yang Junlong, Hou Xingyu, Li Gang, Wang Liu, Bai Ningning, Cai Minkun, Zhao Lingyu, Wang Yan, Zhang Jianming, Chen Ke, Wu Xiang, Yang Canhui, Dai Yuan, Zhang Zhengyou, Guo Chuan Fei
Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.
College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu, 610065, China.
Nat Commun. 2022 Mar 10;13(1):1317. doi: 10.1038/s41467-022-29093-y.
Electronic skins (e-skins) are devices that can respond to mechanical stimuli and enable robots to perceive their surroundings. A great challenge for existing e-skins is that they may easily fail under extreme mechanical conditions due to their multilayered architecture with mechanical mismatch and weak adhesion between the interlayers. Here we report a flexible pressure sensor with tough interfaces enabled by two strategies: quasi-homogeneous composition that ensures mechanical match of interlayers, and interlinked microconed interface that results in a high interfacial toughness of 390 J·m. The tough interface endows the sensor with exceptional signal stability determined by performing 100,000 cycles of rubbing, and fixing the sensor on a car tread and driving 2.6 km on an asphalt road. The topological interlinks can be further extended to soft robot-sensor integration, enabling a seamless interface between the sensor and robot for highly stable sensing performance during manipulation tasks under complicated mechanical conditions.
电子皮肤（e-skins）是一种能够对机械刺激做出响应并使机器人感知周围环境的设备。现有电子皮肤面临的一个巨大挑战是，由于其多层结构存在机械失配以及层间附着力较弱，它们在极端机械条件下可能很容易失效。在此，我们报告一种具有坚韧界面的柔性压力传感器，该传感器通过两种策略实现：准均匀组成确保层间机械匹配，以及相互连接的微锥界面，其界面韧性高达390 J·m²。这种坚韧的界面赋予传感器出色的信号稳定性，这通过进行100,000次摩擦循环以及将传感器固定在汽车轮胎上并在沥青道路上行驶2.6公里得以确定。拓扑互连可以进一步扩展到软机器人 - 传感器集成，在复杂机械条件下的操作任务中，实现传感器与机器人之间的无缝接口，以获得高度稳定的传感性能。
