Flexible Field-Effect Transistor Sensors for Next-Generation Health Monitoring: Materials to Advanced Applications

Area of Science:

• Materials Science
• Biomedical Engineering
• Electronics Engineering

Background:

• Flexible field-effect transistor (FET) sensors are advancing human health monitoring.
• Breakthroughs in materials, device design, and fabrication are key drivers.
• Their advantages include multi-parametric detection, signal amplification, low power, and scalability.

Purpose of the Study:

• To review the structural design and operational principles of flexible FET sensors.
• To summarize material innovations for substrates, dielectrics, channels, and electrodes.
• To analyze mechanical robustness and applications in biosensing.

Main Methods:

• Systematic review of structural design and operational principles.
• Summary of material innovations for FET components.
• Analysis of mechanical stability evaluation and optimization strategies.
• Highlighting applications in physiological monitoring and fluid analysis.

Main Results:

• Flexible FET sensors demonstrate potential for wearable and implantable biosensing.
• Material innovations enhance electrical performance and mechanical robustness.
• Strategies for improving mechanical stability under strain are analyzed.
• Successful applications in real-time physiological signal monitoring and biological fluid analysis are presented.

Conclusions:

• Flexible FET sensors are at the forefront of biosensing technologies.
• Overcoming mechanical stability challenges is crucial for practical deployment.
• Future opportunities lie in personalized health, diagnostics, and medical technologies.