研究目的
Designing a humidity and temperature simultaneous measurement sensor with simple structure, high sensitivity, and fast response time using a carboxymethyl cellulose (CMC)/carbon nanotubes (CNTs) composite film.
研究成果
The designed sensor demonstrates high sensitivity and fast response time for simultaneous measurement of humidity and temperature. The addition of CNTs to the CMC hydrogel film significantly improves humidity sensitivity. The sensor has potential applications in various fields requiring precise environmental monitoring.
研究不足
The thickness of the CMC/CNTs composite hydrogel film affects the response time and mechanical strength of the sensor. The sensor's performance may vary under extreme environmental conditions.
1：Experimental Design and Method Selection:
The sensor is constructed by a fiber Bragg grating (FBG) connected to a hollow-core fiber (HCF) coated with a CMC/CNTs hydrogel composite film.
2：Sample Selection and Data Sources:
The CMC/CNTs composite film was prepared and characterized by EDS and SEM.
3：List of Experimental Equipment and Materials:
Optical fiber fusion splicer (KL-530, Jilong), ultrasonic oscillator (Devos020s), magnetic stirrer, constant temperature and humidity chamber (BPS-50CL, Bluepard instruments).
4：Experimental Procedures and Operational Workflow:
The sensor was tested for humidity and temperature response in a controlled environment.
5：Data Analysis Methods:
The reflected light spectrum was processed to determine the sensor's sensitivity to humidity and temperature changes.
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