Department of Mechanical System Design Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, 01811, Republic of Korea.
School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
Adv Mater. 2021 Nov;33(47):e2005902. doi: 10.1002/adma.202005902. Epub 2021 Apr 22.
Flexible tactile sensors capable of measuring mechanical stimuli via physical contact have attracted significant attention in the field of human-interactive systems. The utilization of tactile information can complement vision and/or sound interaction and provide new functionalities. Recent advancements in micro/nanotechnology, material science, and information technology have resulted in the development of high-performance tactile sensors that reach and even surpass the tactile sensing ability of human skin. Here, important advances in flexible tactile sensors over recent years are summarized, from sensor designs to system-level applications. This review focuses on the representative strategies based on design and material configurations for improving key performance parameters including sensitivity, detection range/linearity, response time/hysteresis, spatial resolution/crosstalk, multidirectional force detection, and insensitivity to other stimuli. System-level integration for practical applications beyond conceptual prototypes and promising applications, such as artificial electronic skin for robotics and prosthetics, wearable controllers for electronics, and bidirectional communication tools, are also discussed. Finally, perspectives on issues regarding further advances are provided.
能够通过物理接触测量机械刺激的柔性触觉传感器在人机交互系统领域引起了极大的关注。触觉信息的利用可以补充视觉和/或声音交互，并提供新的功能。微纳技术、材料科学和信息技术的最新进展已经导致高性能触觉传感器的发展，这些传感器的性能达到甚至超过了人类皮肤的触觉感知能力。在这里，总结了近年来柔性触觉传感器在传感器设计到系统级应用方面的重要进展。本综述重点介绍了基于设计和材料配置的代表性策略，这些策略可提高关键性能参数，包括灵敏度、检测范围/线性度、响应时间/滞后、空间分辨率/串扰、多向力检测以及对其他刺激的不敏感性。还讨论了超越概念原型的实际应用的系统级集成，以及有前途的应用，如机器人和假肢的人工电子皮肤、电子设备的可穿戴控制器和双向通信工具。最后，提供了对进一步进展的问题的看法。
