Open AccessPMMA microball resonator for formaldehyde liquid sensing
Author(s) -
M.M. Sharif,
Hazli Rafis Abdul Rahim,
Megat Azmi Megat Johari,
Muhammad Imran Mustafa Abdul Khudus,
Sulaiman Wadi Harun
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1371/1/012012
Subject(s) - microfiber , materials science , repeatability , resonator , fabrication , formaldehyde , linearity , optoelectronics , optics , composite material , chromatography , chemistry , electronic engineering , medicine , alternative medicine , physics , organic chemistry , pathology , engineering
This experiment reports the fabrication of the Polymethyl Methaclyrate (PMMA) Microball Resonator (MBlR) as a liquid sensor tested on various level of concentration of the Formaldedhye liquid. The PMMA MBlR is fabricated via the “dipped and twirl” method to create the sphere-shaped ball with diameter Db = 320um. The MBlR is then optically excited using a 9|am PMMA microfiber and was found to have a Q Factor of >10 4 . The MBlR was then employed as a liquid sensor with the level percentage range between 0% to 4% of Formaldehyde liquid and the performance is compared with a non MBlR microfiber. The MBlR sensor was found to have a sensitivity of 6.94 dBm/%, linearity >90% and P-value of more than 10 5 . The PMMA MBlR liquid sensor was also found to have good repeatability and stability over a period of 60 seconds.