ZnO nanoparticles coated optical fiber sensor for volatile organic compound biomarker detection

Kankan Swargiary; Pannathorn Jitpratak; Nuntaporn Kongsawang; Charusluk Viphavakit

doi:10.1117/12.3016865

20 June 2024 ZnO nanoparticles coated optical fiber sensor for volatile organic compound biomarker detection

Kankan Swargiary, Pannathorn Jitpratak, Nuntaporn Kongsawang, Charusluk Viphavakit

Proceedings Volume 12999, Optical Sensing and Detection VIII; 1299929 (2024) https://doi.org/10.1117/12.3016865
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Conference Poster

Abstract

This study proposes an optical fiber sensor with a single mode - no-core - single mode (SNS) structure. The sensor employs zinc oxide (ZnO) as a sensing layer coated over the no-core fiber (NCF) region. ZnO is introduced to absorb volatile organic compound (VOC) biomarkers of diabetes, utilizing an evanescent sensing mechanism. The ZnO colloidal solution used for this purpose was synthesized through aqueous chemical growth. A cost-effective airbrush was used for coating a thin layer of ZnO over the NCF. Several material characterizations, including FE-SEM, UV-Vis, and XRD, were conducted to validate the presence of the ZnO layer over the NCF. The study investigates VOC biomarkers for diabetes, such as acetone, isopropanol, and ethanol, with 100-500 ppm concentrations. These VOCs were chosen because they belong to the same class of alcohol found in the exhaled breath of individuals with diabetes. Notably, the optical fiber sensor exhibited the highest sensitivity to acetone, with a sensitivity of 0.0028 nm/ppm. In addition, the sensor demonstrated selectivity to acetone, highlighting the significant role played by the morphology of the ZnO layer. The results presented in this study suggest that the proposed sensor has the potential for real-time and non-invasive monitoring of acetone vapor, a biomarker in exhaled breath for diabetes. Its advantages include cost-effectiveness and simple fabrication processes, making it a promising tool for diabetes management and diagnosis.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Kankan Swargiary, Pannathorn Jitpratak, Nuntaporn Kongsawang, and Charusluk Viphavakit "ZnO nanoparticles coated optical fiber sensor for volatile organic compound biomarker detection", Proc. SPIE 12999, Optical Sensing and Detection VIII, 1299929 (20 June 2024); https://doi.org/10.1117/12.3016865

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