Utilization of ZnO nanorods growth on a tip of plastic optical fiber toward the realization of low-cost CO and CO2 gas sensor

Hoorieh Fallah; Mahmood Afra; Ezeddin Mohajerani; Waleed S. Mohammad

doi:10.1117/1.JNP.11.036023

23 September 2017 Utilization of ZnO nanorods growth on a tip of plastic optical fiber toward the realization of low-cost CO and CO₂ gas sensor

Hoorieh Fallah, Mahmood Afra, Ezeddin Mohajerani, Waleed S. Mohammad

Author Affiliations +

Journal of Nanophotonics, Vol. 11, Issue 3, 036023 (September 2017). https://doi.org/10.1117/1.JNP.11.036023

Abstract

This study experimentally demonstrates the feasibility of utilizing zinc oxide nanorods for CO and CO2 gas detection via optical scattering. ZnO nanorods are grown on a plastic optical fiber to measure the effect of gas flow on the optical scattering at room temperature. The presence of nanorods minimizes the coupling of the Fresnel reflection. Placing the optical setup in a home-built gas chamber, an obvious distinguished change of the total reflection was observed when different gas concentrations were present. Reduction of reflection due to the presence of gas indicated that forward scattering leak has a dominant effect on the process. In addition, the results demonstrated that detection of CO gas at a concentration as low as 200 ppm had a higher response in comparison with CO2 gas.

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Hoorieh Fallah, Mahmood Afra, Ezeddin Mohajerani, and Waleed S. Mohammad "Utilization of ZnO nanorods growth on a tip of plastic optical fiber toward the realization of low-cost CO and CO₂ gas sensor," Journal of Nanophotonics 11(3), 036023 (23 September 2017). https://doi.org/10.1117/1.JNP.11.036023

Received: 22 May 2017; Accepted: 30 August 2017; Published: 23 September 2017

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