Wang Wenjie, Wang Yingfei, Xiang Li, Chen Long, Yu Lilei, Pan Anlian, Tan Jie, Yuan Quan
Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Hunan University, Changsha, 410082, China.
Department of Computer and Information Science, Faculty of Science and Technology, University of Macau, Macau SAR, China.
Adv Mater. 2024 Feb;36(7):e2310555. doi: 10.1002/adma.202310555. Epub 2023 Dec 7.
Pain sensation is a crucial aspect of perception in the body. Force-activated nociceptors encode electrochemical signals and yield multilevel information of pain, thus enabling smart feedback. Inspired by the natural template, multi-dimensional mechano-sensing materials provide promising approaches for biomimetic nociceptors in intelligent terminals. However, the reliance on non-centrosymmetric crystals has narrowed the range of these materials. Here centrosymmetric crystal Cr -doped zinc gallogermanate (ZGGO:Cr) with multi-dimensional mechano-sensing is reported, eliminating the limitation of crystal structure. Under forces, ZGGO:Cr generates electrical signals imitating those of neuronal systems, and produces luminescence for spatial mapping of mechanical stimuli, suggesting a path toward bionic pain perception. On that basis, a wireless biomimetic nociceptor system is developed and a smart pain reflex in a robotic hand and robot-assisted biopsy surgery of rat and dog is achieved.
痛觉是人体感知的一个关键方面。力激活的伤害感受器对电化学信号进行编码,并产生多层次的疼痛信息,从而实现智能反馈。受自然模板的启发,多维机械传感材料为智能终端中的仿生伤害感受器提供了有前景的方法。然而,对非中心对称晶体的依赖限制了这些材料的范围。在此,报道了具有多维机械传感的中心对称晶体Cr掺杂锌镓锗酸盐(ZGGO:Cr),消除了晶体结构的限制。在力的作用下,ZGGO:Cr产生模仿神经元系统的电信号,并产生用于机械刺激空间映射的发光现象,为仿生痛觉感知指明了一条道路。在此基础上,开发了一种无线仿生伤害感受器系统,并在机器人手中实现了智能疼痛反射以及大鼠和犬的机器人辅助活检手术。