Self-Healable Soft Ionotronic Skin for Gesture Recognition
- Resource Type
- Conference
- Authors
- Zhang, Yanghong; Liu, Mengwei; Zhou, Zhitao; Zhang, Yujia; Tao, Tiger H.
- Source
- 2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers) SSolid-State Sensors, Actuators and Microsystems (Transducers), 2021 21st International Conference on. :1428-1431 Jun, 2021
- Subject
- Bioengineering
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Power, Energy and Industry Applications
Robotics and Control Systems
Temperature sensors
Young's modulus
Electric potential
Transducers
Wearable computers
Gesture recognition
Skin
Ionotronic skin
Self-healing
Silk hydrogel
Strain sensor
Extreme temperature tolerance
- Language
- ISSN
- 2167-0021
We report a self-healable soft body-integrated ionotronic skin (i-skin) for gesture recognition. The device is made of naturally extracted silk fibroin proteins in the format of hydrogel and functionalized by adding calcium ions and glycerin for high stretchability and conductivity. The silk-Ca 2+ -glycerin network has high stretchability (up to 600%) and low Young's modulus (0.2-0.3MPa) for conformable contact to the skin. Importantly, the silk i-skin shows excellent self-healing capability and stays functional under a wide range of temperatures from −25°C to 80°C. As a proof-of-concept, we have used the device as a strain sensor which shows characteristic responses to various complex hand motions for gesture recognition. Additionally, we have demonstrated the use of these devices for real-time monitoring sporting motions of finger joints. Our work provides insight for wearable devices under harsh environments.