Optimization of Nanofiber Wearable Heart Rate Sensor Module for Human Motion Detection

Area of Science:

• Materials Science
• Biomedical Engineering
• Nanotechnology

Background:

• Wearable sensors are crucial for monitoring physiological and biochemical signals.
• Existing heart rate sensors require optimization for enhanced detection performance and body kinematics.
• Nanofiber technology offers potential for improving sensor capabilities.

Purpose of the Study:

• To optimize wearable heart rate sensor modules using nanofibers for improved detection.
• To develop a novel porous graphene film for enhanced sensor performance.
• To validate the application potential in human motion detection.

Main Methods:

• Preparation of nanoparticle-doped graphene films from graphene oxide solution.
• Creation of porous microstructure in graphene films by nanoparticle removal in toluene.
• Integration of porous graphene film with a conductive film to form a wearable sensor module.
• Strain response testing to evaluate sensor performance.

Main Results:

• A wearable heart rate sensor module was successfully fabricated using porous graphene film.
• The sensor module demonstrated significantly improved resistance change (8-16 times higher) compared to reduced graphene oxide (RGO) films.
• Enhanced sensitivity was observed, indicating superior performance.

Conclusions:

• The developed porous graphene film wearable sensor module shows significant potential for human motion detection.
• The nanofiber-optimized sensor design offers improved sensitivity and detection capabilities.
• This research validates a promising method for advanced wearable sensing technology.