Applied whispering gallery modes on ZnO nanorods coated glass for humidity sensing application
Document Type
Article
Publication Date
5-1-2021
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.
Keywords
Humidity sensor, Whispering gallery mode (WGM), ZnO nanorods coated glass
Divisions
sch_ecs
Funders
None
Publication Title
Optoelectronics Letters
Volume
17
Issue
5
Publisher
Tianjin Univ Technology