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

Jali, Mohd Hafiz and Rahim, Hazli Rafis Abdul and Md Johari, Md Ashadi and Sharif, Maslinda Mat and Johari, Siti Halma and Thokchom, Siddharth and Mohamed, Habibah and Yasin, Moh and Harun, Sulaiman Wadi (2021) Applied whispering gallery modes on ZnO nanorods coated glass for humidity sensing application. Optoelectronics Letters, 17 (5). pp. 298-301. ISSN 1673-1905, DOI https://doi.org/10.1007/s11801-021-0109-3.

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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 mu m 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.

Item Type: Article
Funders: None
Uncontrolled Keywords: Humidity sensor; Whispering gallery mode (WGM); ZnO nanorods coated glass
Subjects: R Medicine > RE Ophthalmology > Optometry. Opticians. Eyeglasses
T Technology > T Technology (General)
Divisions: Faculty of Engineering > Department of Electrical Engineering
Depositing User: Ms Zaharah Ramly
Date Deposited: 11 May 2022 08:28
Last Modified: 11 May 2022 08:28
URI: http://eprints.um.edu.my/id/eprint/34839

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