Abstract ▼ AI-Helper

In this study, we developed an optical gas sensor of the non-invasive type for transcutaneous partial pressure of carbon dioxide, pCO2, monitoring in the arterial blood. The optical reaction length was reduced by 1mm using the MEMS technology. We confirmed the result of 2.21×10-6 absorbance/ppm sens...

In this study, we developed an optical gas sensor of the non-invasive type for transcutaneous partial pressure of carbon dioxide, pCO2, monitoring in the arterial blood. The optical reaction length was reduced by 1mm using the MEMS technology. We confirmed the result of 2.21×10-6 absorbance/ppm sensitivity for concentration at 1,040 mbar, 2.14×10-5 absorbance/mbar sensitivity for pressure at 5,000 ppm (parts per million) CO2 and 8.11×10-2 absorbance/mm sensitivity for optical reaction length. The fabricated pCO2 monitoring system showed fast response time about 5 seconds. The proposed system can be used in optical-bio sensor fields for medical diagnosis such as pCO2 monitoring system, capnograph system for EtCO2 analysis, and environment monitoring systems.

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