【摘 要】
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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 sur-face was coated with ZnO nano
【机 构】
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Department of Electrical Engineering,University of Malaya,Kuala Lumpur 50603,Malaysia;Faculty of Ele
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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 sur-face 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 0.0142 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.
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