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Flexible Wearable Pressure Sensor Based on Collagen Fiber Material.
Zhiqing Peng1, Shijie Zheng1, Xia Zhang1
1Institute of Laser & Micro/Nano Engineering, College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China.
Micromachines
|May 28, 2022
Summary
This study introduces a novel flexible wearable pressure sensor using ionic collagen fiber. The sensor offers high sensitivity and rapid response for advanced healthcare monitoring and human-machine interaction applications.
Area of Science:
- Materials Science
- Biomedical Engineering
- Sensor Technology
Background:
- Flexible wearable pressure sensors are crucial for healthcare and human-machine interaction.
- Current sensors face limitations in sensing range, sensitivity, response time, and preparation complexity.
Purpose of the Study:
- To develop a highly sensitive and flexible capacitive pressure sensor.
- To utilize ionic collagen fiber as a dielectric layer for improved performance.
Main Methods:
- Fabrication of a capacitive pressure sensor using an ionic collagen fiber dielectric layer.
- Characterization of sensor performance including sensitivity, response time, stability, and repeatability.
- Demonstration of the sensor's applicability in wearable monitoring by attaching it to the human body.
Main Results:
- The sensor achieved high sensitivity (5.24 kPa⁻¹).
- It demonstrated a fast response time (40 ms) and excellent long-term stability over 3000 cycles.
- The resizable, flexible sensor with a simple preparation process was successfully attached to clothing and the human body for activity signal monitoring.
Conclusions:
- The proposed ionic collagen fiber-based capacitive pressure sensor overcomes limitations of existing technologies.
- Its high performance, flexibility, and ease of preparation enable practical applications in wearable health monitoring and human-machine interfaces.
