Microfluidic integrated gas sensors for smart analyte detection: a comprehensive review

Area of Science:

• Integration of microfluidic technology with gas sensing principles.
• Development of miniaturized analytical devices for gas analysis.

Background:

• Traditional gas sensors face challenges: bulkiness, high cost, operational complexity, and large sample requirements.
• Existing gas sensing technologies limit applications in point-of-care and point-of-use scenarios.

Purpose of the Study:

• To systematically review and categorize microfluidic gas sensors.
• To explore the integration of diverse gas sensing modalities within microfluidic platforms.
• To highlight performance enhancements achieved through microfluidic integration.

Main Methods:

• Categorization of microfluidic gas sensors based on application domains: safety, biomedical, and environmental.
• Review of integrated gas sensor types: optical, chemical, and physical sensors.
• Analysis of performance improvements in microfluidic gas sensing systems.

Main Results:

• Microfluidic platforms offer a viable solution to overcome limitations of conventional gas sensors.
• Integration with microfluidics enhances the performance of optical, chemical, and physical gas sensors.
• Categorized review provides a comprehensive overview of microfluidic gas sensor applications.

Conclusions:

• Microfluidic gas sensors represent a significant advancement for portable and efficient gas analysis.
• This technology enables new possibilities for worker safety, environmental monitoring, and early disease diagnosis.
• The integration of various sensing principles within microfluidics unlocks enhanced performance and broader applicability.