Applied whispering gallery modes on ZnO nanorods coated glass for humidity sensing application

Mohd Hafiz Jali, Hazli Rafis Abdul Rahim, Md Ashadi Md Johari, Maslinda Mat Sharif, Siti Halma Johari, Siddharth Thokchom, Habibah Mohamed, Moh Yasin, Sulaiman Wadi Harun

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

In this letter, a humidity sensor is demonstrated by applying a whispering gallery mode (WGM) from a microsphere resonator onto the ZnO nanorods coated glass surface. The diameter of the microsphere was 234 µm and the glass surface was coated with ZnO nanorods using the hydrothermal method at growth duration of 12 h. A significant response to humidity level ranging from 35%RH to 85%RH has been observed with the sensitivity of 0.014 2 nm/%RH. The proposed humidity sensor has successfully employed to enhance interaction between the whispering gallery mode evanescent and surrounds analyte with the assistance of ZnO nanorods coated glass.

Original languageEnglish
Pages (from-to)298-301
Number of pages4
JournalOptoelectronics Letters
Volume17
Issue number5
DOIs
Publication statusPublished - May 2021

Keywords

  • A

Fingerprint

Dive into the research topics of 'Applied whispering gallery modes on ZnO nanorods coated glass for humidity sensing application'. Together they form a unique fingerprint.

Cite this