Extraordinarily Sensitive and Low-Voltage Operational Cloth-Based Electronic Skin for Wearable Sensing and Multifunctional Integration Uses: a Tactile Induced Insulating-to-Conducting Transition
賴盈至1*, 陳永芳2
1材料系, 中興大學, 台中, Taiwan
2物理系, 台灣大學, 台北, Taiwan
* presenting author:Ying-Chih Lai, email:lai423@gmail.com
Electronic skin sensing device is an emerging technology and has substantial demand in vast practical fields including wearable sensing, robotics and user-interactive interfaces. In order to imitate or even outperform the capabilities of natural skin, the keen exploration of materials, device structures, and new functions is desired. However, the very high resistance and the inadequate current switching and sensitivity of reported electronic skins hinder to further develop and explore the promising uses of the emerging sensing devices. Here, we report a novel resistive cloth-based skin-like sensor device which possesses unprecedented features including ultra-high current switching behavior of ~107 and giant high sensitivity of 1.04×10⁴-6.57×10⁶ kPa-¹ in a low-pressure region of < 3 kPa. Notably, both superior features can be achieved by a very low working voltage of 0.1 V. Taking these remarkable traits, our device not only exhibits excellent sensing abilities to various mechanical forces, meeting various applications required for skin-like sensors, but also demonstrates a unique competence to facile integration with other functional devices for various purposes with ultrasensitive capabilities. Therefore, our new methodologies presented here enable to greatly enlarge and advance the development of versatile electronic skin applications.

Keywords: electronic skins, pressure sensors, human-machine interfaces, human-motion monitoring systems