Microbottle resonator formaldehyde sensor

M. A.M. Johari, M. I.M. Abdul Khudus, A. Al Noman, M. H. Jali, H. H.M. Yusof, S. W. Harun, M. Yasin

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)


We investigate the use of whispering gallery mode (WGM) optical microbottle resonator (MBR) as a sensor for liquid formaldehyde sensor. An MBR fabricated via the "soften-and-compress" method with a diameter of 190 μm was optically excited by using a non-adiabatic 2 μm optical microfibre and employed to measure formaldehyde with concentrations of between 0% and 5%, with the results compared with the performance of a bare microfibre. The MBR sensor was found to have a sensitivity of 4.397 dB/% with 90 % linearity and were generally outperforms the bare microfiber sensor by a wide margin.

Original languageEnglish
Article number012021
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 18 Mar 2019
EventNewton Researcher Links Workshop 2018: Bio-Photonics For Medical Technologies - Malacca, Malaysia
Duration: 23 Jul 201825 Jul 2018


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