Abstract
Water purity plays a key role in medical applications such as clinical diagnosis, drug delivery, sterilization, and patient management. One of the most important medical treatments in which the quality of water is very important is hydrotherapy. Most of the patients have weakened immune systems due to existing infections, making them highly vulnerable to new infections from contaminated water in hydrotherapy pools. Therefore, the hydrotherapy water should be tested to ensure the safety of the patients’ lives. In this research, a fiber optic bilayer sensor consisting of silver, copper, platinum, nickel, and gold as the metal layer, and scandium oxide as the second layer, has been numerically simulated to test water purity for hydrotherapy applications. The proposed configuration gives water purity detection with a maximum sensitivity of 4594.0°/RIU for Ni/Sc2O3 while the contacting length is considered as 10 mm, which is much higher than the conventional sensor. It is a topic of interest to researchers in related areas. Ag/Sc2O3 exhibits the highest figure of merit value compared to other materials. At the second part of the study, the effect of a silver-aluminum alloy has been investigated to enhance the quality factor of the winner structure (Ag/Sc2O3). The most efficient silver-aluminum combination ratio is found to be 0.1:0.9, which enhances the sensor quality factor from 40.50 to 60.45 (RIU−1) in aqueous media, while the refractive index of water changes from 1.33 to 1.34.
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Parisa Esmailidastjerdipour and Fateme Shahshahani do all the research together. All of the authors read the final manuscripts.
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Esmailidastjerdipour, P., Shahshahani, F. Numerical Simulation of Fiber Optic Biosensor Consisting of Metal/Sc2O3 Enhancing by Using Aluminum Alloy for Hydrotherapy Applications. Plasmonics 19, 1443–1452 (2024). https://doi.org/10.1007/s11468-023-02086-3
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DOI: https://doi.org/10.1007/s11468-023-02086-3