Light Side Coupling on ZnO Nanorods-Coated Glass Substrate for Lactose Sensing
Received: 13 June 2024 | Revised: 13 January 2025 | Accepted: 17 March 2025 | Online: 4 June 2025
Corresponding author: Mohd Haviz Jali
Abstract
This study presents a novel sensing device for lactose detection, using ZnO nanorods on glass substrate with a light side coupling technique, as this integration enhances light scattering and adsorption, improving sensing performance. The proposed sensor was exposed to ranging lactose concentrations (0% to 100%) to validate its performance. The results were compared with a classic single light source technique to evaluate several parameters, such as sensitivity, linearity, repeatability, stability, response time, and hysteresis. Τhe experimental findings exhibited a higher sensitivity of 0.0201 V/% concentration, superior linearity of 99.61%, and improved resolution by a factor of 1.5 compared to traditional methods. Due to its cost-effectiveness, simple fabrication process, and superior performance, this sensing platform presents a viable alternative for industrial optical sensing applications, particularly in food quality monitoring and biomedical diagnostics.
Keywords:
side coupling, lactose, sensor, zinc oxideDownloads
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Copyright (c) 2025 Marlina Jahava, Mohd Haviz Jali, Md. Ashadi Md. Johari, Mohd Adili Norashikin, Haziezol Helmi Mohd Yusof, Aminah Ahmad
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