研究目的
To develop a humidity sensor based on a specialty microstructured optical fiber (MOF) utilizing a chitosan polymer matrix for real-time breath monitoring.
研究成果
The proposed sensor is promising in biomedical applications such as monitoring breath of individuals suffering from asthma and any lung disease in addition to monitoring humidity levels in agriculture and food storage units where maintaining a certain humidity level is of utmost importance.
研究不足
The probe possesses a non-linear behavior due to the presence of the chitosan polymer and also has a non-linear hygroscopic response. At low RH values, the chitosan polymeric film is nearly at a dehydration state resulting in less sensitivity.
1：Experimental Design and Method Selection:
A suspended tri-core MOF was fabricated using the stack and draw technique. A Fabry-Pérot interferometer was formed by depositing a chitosan polymer matrix within the holes of the MOF.
2：Sample Selection and Data Sources:
The sensor probe was tested in a climate chamber with RH value varying from 30% to 95%.
3：5%.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Suspended tri-core MOF, chitosan polymer, broadband source (1420 nm-1600 nm), optical circulator, optical spectrum analyzer (OSA).
4：Experimental Procedures and Operational Workflow:
The probe was calibrated by tracing a specific dip wavelength of the interference pattern. The performance of the sensor was characterized in terms of hysteresis, stability, and sensitivity.
5：Data Analysis Methods:
Wavelength interrogation method was used by tracking the change in dip wavelength in the interference pattern.
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