Humidity Responsivity of PMMA Microfiber knot Resonator Coated with ZnO Nanorods

Authors

  • N. F. Razak
  • N. Irawati
  • N. Daud

Abstract

A zinc oxide (ZnO)-coated Polymethyl methacrylate (PMMA) microfiber knot resonator (PMKR) is suggested and displayed for tracking of surrounding atmosphere relative humidity (RH). The PMKR has a knot diameter of 133 ?m and was manufactured using direct drawing method utilizing PMMA microfiber 7 ?m diameters and 7 mm length respectively. The humidity sensor was developed by coated ZnO onto PMMA microfiber. The output of the humidity sensor was examined on the basis of an increased sensor transmission as the relative humidity level ranges from 50 to 80%. The results displayed an increase in the sensor sensitivity on the PMMA fiber surface with extra ZnO coating. The proposed PMKR coated ZnO has higher output stability compared to uncoated PMKR, making it suitable to be used in sensor application.

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Published

2019-11-25

Issue

Section

Articles