A study on relative humidity sensors using PVA and PMMA coating. (November 2019)

• Record Type: Journal Article
• Authors: Harith, Zuraidah; Adnan Abdullah Zain, Huda; Batumalay, Malathy; Wadi Harun, Sulaiman
• Is Part Of: Journal of physics. Volume 1371(2019)
• Publication Date: 2019-11
• Subjects: Fiber Optic Sensor -- Relative Humidity (RH) -- Sensor -- Refractive Index (RI) -- Tapered Silica Microfibers -- Polyvinyl Acetate (PVA) and Polymethyl Methacrylate (PMMA).; Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1371/1/012027
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: 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%.