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| 1 | 基于微纳光纤的柔性仿生微结构触觉传感器研究显示文摘人类指尖的指纹图案以及互锁的表皮-真皮微结构在放大触觉信号并将其传递给各种机械感受器方面发挥着关键作用,从而实现对各种静态和动态触觉信号的时空感知。本文报道了一种受指尖皮肤微结构启发的微纳光纤柔性触觉传感器,该传感器具有环形脊的指纹状表面、错峰互锁的微结构以及刚度差异化的树脂/聚二甲基硅氧烷多层结构。通过这些设计特征,传感器能够以高耐久性、高灵敏度(20.58%N^(-1))、快速响应(86 ms)及大动态范围(0~16 N)检测多种时空触觉刺激,包括静态、动态压力和振动,并能够识别物体的硬度和表面纹理差异。该传感器具有结构紧凑、制作简便、易集成、抗电磁干扰等优点,可被应用于机器人皮肤、可穿戴传感器和医疗诊断设备中。 | 范成磊 罗彬彬 吴德操 邹雪 饶洪承 周富民 黄玲 石胜辉 胡新宇 | 2023 | 光学学报2023，43，21： | 0 |
| 2 | Knot-inspired optical sensors for slip detection and friction measurement in dexterous robotic manipulation显示文摘Friction plays a critical role in dexterous robotic manipulation.However,realizing friction sensing remains a challenge due to the difficulty in designing sensing structures to decouple multi-axial forces.Inspired by the topological mechanics of knots,we construct optical fiber knot(OFN)sensors for slip detection and friction measurement.By introducing localized self-contacts along the fiber,the knot structure enables anisotropic responses to normal and frictional forces.By employing OFNs and a change point detection algorithm,we demonstrate adaptive robotic grasping of slipping cups.We further develop a robotic finger that can measure tri-axial forces via a centrosymmetric architecture composed of five OFNs.Such a tactile finger allows a robotic hand to manipulate human tools dexterously.This work could provide a straightforward and cost-effective strategy for promoting adaptive grasping,dexterous manipulation,and human-robot interaction with tactile sensing. | Jing Pan Qi Wang Shuaikang Gao Zhang Zhang Yu Xie Longteng Yu Lei Zhang | 2023 | Opto-Electronic Advances2023，6，10： | 0 |
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