Effect of tapering diameters with microbottle resonator for formaldehyde (CH2O) liquid sensing

Md Ashadi Md Johari, Muhammad Imran Mustafa Abdul Khudus, Mohd Hafiz Bin Jali, M. S. Maslinda, Ummu Umairah Mohamad Ali, Sulaiman Wadi Harun, A. H. Zaidan, R. Apsari, M. Yasin

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

In this study, we demonstrate the effect of the microbottle resonator (MBR) based on whispering gallery modes (WGMs) with two different diameters of tapered microfibre and its experiment with the formaldehyde (CH2O) liquid sensor. The MBR with the bottle diameter, Db, of 190 μm was categorized by many spectra of transmission modes. Then, the MBR was energized through two tapered microfibres with different diameters, 8 μm and 10 μm. Differences between the two tapered microfibres with the MBR were determined for different concentration levels of sensing liquid. In addition, p-values and stability levels of the two tapered microfibres were calculated. According to the comparison results, the 8 μm tapered microfiber has a much better competency than the 10 μm tapered microfiber when using the MBR.

Original languageEnglish
Article number100292
JournalSensing and Bio-Sensing Research
Volume25
DOIs
Publication statusPublished - Sept 2019

Keywords

  • Formaldehyde liquid
  • Optical microbottle resonator
  • Quality factor
  • Tapered microfiber
  • Whispering gallery mode

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