SMF tapered fiber/AuNPs/ZnO based sensor for detection of acetylcholine

Zhi Wang; Ragini Singh; Bingyuan Zhang; Santosh Kumar

doi:10.1117/12.2598784

9 October 2021 SMF tapered fiber/AuNPs/ZnO based sensor for detection of acetylcholine

Zhi Wang, Ragini Singh, Bingyuan Zhang, Santosh Kumar

Proceedings Volume 11900, Optics in Health Care and Biomedical Optics XI; 119003D (2021) https://doi.org/10.1117/12.2598784
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

In this work, a simple and effective sensor using single-mode fiber (SMF) tapered structure is developed to detect different concentrations of acetylcholine solutions, and its function is to test the probe's performance. A layer of synthesized gold nanoparticles (AuNPs) and zinc oxide nanoparticles (ZnO-NPs) is used to immobilize this type of SMF-based tapered structure. The work is based on the well-known phenomenon of localized surface plasmon resonance (LSPR) principle. A tapered region of the probe with a high fraction power of evanescent wave can stimulate LSPR and produce specific absorption peaks sensitive to the refractive index variation. The sensor probes performance was examined, including their stability, repeatability, reusability, and selectivity. Furthermore, the biosensor's ability to improve performance was tested in the experiment.

Citation Download Citation

Zhi Wang, Ragini Singh, Bingyuan Zhang, and Santosh Kumar "SMF tapered fiber/AuNPs/ZnO based sensor for detection of acetylcholine", Proc. SPIE 11900, Optics in Health Care and Biomedical Optics XI, 119003D (9 October 2021); https://doi.org/10.1117/12.2598784

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