Graphene Oxide-Based Surface Plasmon Optical Fiber Biosensor for Thiamine Detection

• Published in: IEEE transactions on plasma science 2024-03, Vol.52 (3), p.809-815
• Main Authors: Kumari, Anamika, Choudhary, Kuldeep, Vyas, Vibha, Kumar, Santosh
• Format: Article
• Language: English
• Subjects: Biosensors; Carbohydrates; Correlation coefficients; Fabrication; Gold; Gold nanoparticles (AuNPs); Graphene; graphene oxide (GO); localized surface plasmon resonance (LSPR); Muscles; Nanoparticles; Neurological system; optical fiber sensor; Optical fiber sensors; Optical fibers; Optical variables measurement; Sensitivity; Sensors; Surface plasmon resonance; Surface plasmons; Thiamine; thiamine detection; Vitamin B; vitamin B₁ detection
• ISSN: 0093-3813; 1939-9375
• DOI: 10.1109/TPS.2024.3380396

The work proposes a localized surface plasmon resonance (LSPR)-based optical fiber sensor for detecting thiamine. Thiamine, commonly known as vitamin B_{1} , is a water-soluble vitamin that is essential for human health. It is required for the heart, muscles, and neurological system to function properly and for the metabolism of carbohydrates. Measurement of its concentration is essential in treating many diseases caused by its deficiency. The present work proposes and fabricates an optical fiber sensor for measuring its concentration in the range of 200- 500~\mu \text{g} /mL. The role of gold nanoparticles (AuNPs) and graphene oxide (GO) in enhancing the sensor's performance is studied. The article also describes the method involved in synthesizing and characterizing AuNPs and GO. The details of the sensor fabrication that involves the functionalization of AuNPs and GO have also been discussed along with the experimental setup. The sensitivity of the proposed sensor is found to be 0.0061 nm/( \mu \text{g} /mL) with a calibration correlation factor of 0.9656 in the range of 200- 500~\mu \text{g} /mL.