A study on relative humidity sensors using PVA and PMMA coating

A study on relative humidity sensors using PVA and PMMA coating

Simple relative humidity sensors are demonstrated using tapered silica microfibers. The silica microfibers are tapered using flame brushing method to reduce the fiber's waist diameter from 128 micrometers to 2.6 micrometers. The tapered silica microfibers were then coated using polyvinyl acetat...

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Veröffentlicht in:Journal of physics. Conference series 2019-11, Vol.1371 (1), p.12027
Hauptverfasser: Harith, Zuraidah, Adnan Abdullah Zain, Huda, Batumalay, Malathy, Wadi Harun, Sulaiman
Format: Artikel
Sprache:eng
Schlagworte:
Fiber Optic Sensor
Humidity
Microfibers
Micrometers
Physics
Polymethyl methacrylate
Polyvinyl Acetate (PVA) and Polymethyl Methacrylate (PMMA)
Polyvinyl alcohol
Refractive Index (RI)
Relative humidity
Relative Humidity (RH)
Sensor
Sensors
Silicon dioxide
Tapered Silica Microfibers
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Zusammenfassung:Simple relative humidity sensors are demonstrated using tapered silica microfibers. The silica microfibers are tapered using flame brushing method to reduce the fiber's waist diameter from 128 micrometers to 2.6 micrometers. The tapered silica microfibers were then coated using polyvinyl acetate (PVA) and polymethyl methacrylate (PMMA) before it was used to sense the relative humidity. The tapered silica microfiber coated with PVA performed better compared to tapered silica microfiber coated using PMMA. The tapered silica microfiber with PVA based sensor has better sensitivity of 0.3023 dB/RH%.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1371/1/012027