Flexible potentiometric pH sensors for wearable systems

Area of Science:

• Biomedical Engineering
• Materials Science
• Analytical Chemistry

Background:

• Growing demand for wearable sensors for non-invasive chronic disease detection and self-health management.
• Electrochemical pH sensors are crucial due to pH's influence on biological and chemical reactions.
• Flexible and stretchable sensors are key for wearable applications.

Purpose of the Study:

• To review recent developments in wearable electrochemical potentiometric pH sensors.
• To cover suitability, design, materials, applications, and challenges of these sensors.

Main Methods:

• Review of recent literature on flexible and stretchable electrochemical potentiometric pH sensors.
• Analysis of sensor components including substrates, reference electrodes, and sensitive electrodes.
• Discussion of sensor designs tailored for various applications.

Main Results:

• Recent advancements in materials and designs for flexible potentiometric pH sensors.
• Exploration of diverse applications for wearable pH sensing.
• Identification of key challenges hindering widespread adoption.

Conclusions:

• Flexible electrochemical potentiometric pH sensors show significant promise for wearable health monitoring.
• Further research is needed to overcome challenges in materials, long-term stability, and integration.
• These sensors are vital for early disease detection and personalized healthcare.