Self-Powered Biosensors for Monitoring Human Physiological Changes

Area of Science:

• Biomedical Engineering
• Materials Science
• Sensor Technology

Background:

• Human physiological signals (physical and chemical) are vital for health and exercise monitoring.
• Advancements in biosensor technology have led to soft, stretching, and self-powered devices.
• Existing biosensors require external power, limiting continuous monitoring and portability.

Purpose of the Study:

• To review the progress of self-powered biosensors over the past five years.
• To analyze different classifications of human signals and biosensor forms (implanted and wearable).
• To summarize energy sources and applications of self-powered biosensor devices.

Main Methods:

• Review of recent scientific literature on self-powered biosensors.
• Analysis of nanogenerators and biofuel cells as energy sources for biosensors.
• Categorization of biosensors based on signal type, form factor, and energy harvesting mechanism.

Main Results:

• Self-powered biosensors primarily use nanogenerators and biofuel cells for energy harvesting.
• Nanogenerators are suitable for bioenergy harvesting and sensing, enhancing physiological monitoring.
• Biofuel cells are effective for chemical signal monitoring due to their small size and biocompatibility.

Conclusions:

• Self-powered biosensors, particularly those based on nanogenerators, are critical for accurate physiological monitoring and energy provision.
• The integration of nanogenerators with classical sensors improves long-range medical care and sports health applications.
• Future developments will likely focus on enhancing the efficiency and applicability of these advanced biosensing technologies.