Marine mammals relying on tactile perception for hunting are able to achieve a remarkably high prey capture rate without visual or acoustic perception. Here, a self-powered triboelectric palm-like tactile sensor (TPTS) is designed to build a tactile perceptual system for underwater vehicles. It is enabled by a three-dimensional structure that mimics the leathery, granular texture in the palms of sea otters, whose inner neural architecture provides additional clues indicating the importance of tactile information. With the assistance of palm structure and triboelectric nanogenerator technology, the proposed TPTS has the ability to detect and distinguish normal and shear external load in real-time and approximate the external stimulation area, especially not affected by the touch frequency, that is, it can maintain stable performance under high-frequency contact. The results show that the TPTS is a promising tool for integration into grippers mounted on underwater vehicles to complete numerous underwater tasks.

依靠触觉进行狩猎的海洋哺乳动物能够在没有视觉或听觉感知的情况下实现非常高的猎物捕获率。在这里，一种自供电摩擦电手掌状触觉传感器 (TPTS) 旨在为水下航行器构建触觉感知系统。它是由一种模拟海獭手掌中革质、颗粒状纹理的三维结构实现的，其内部神经结构提供了额外的线索，表明触觉信息的重要性。在手掌结构和摩擦电纳米发电机技术的帮助下，所提出的 TPTS 能够实时检测和区分正常和剪切外部负载并近似外部刺激区域，特别是不受触摸频率的影响，即 在高频接触下仍能保持稳定的性能。结果表明，TPTS 是一种很有前途的工具，可以集成到安装在水下航行器上的抓手中，以完成众多水下任务。