Abstract
This work presents a novel application of a photonic crystal fiber (PCF) based surface plasmon resonance (SPR) biosensor for analyzing heavy metal (HM) fused water samples. An innovative design of the PCF SPR biosensor is shown in this article, having a combination of D− shaped and external metal deposition (EMD) technique. The real-time analysis of the HM fused water samples is performed in this work through a developed spectroscopy-based sensing setup which presents the details about the transmission (%) and absorbance (AU) from the water samples. HM, fused water samples show a change in their refractive index (RI) values for varying HM concentrations. This varying range of RI is generalized to design a RI variation-based biosensor. HM fused water samples show a change in the RI varying from 1.330 to 1.350RIU for HM ions Cd2+, Cu2+, Hg2+ and Pb2+. Thus a highly sensitive biosensor is designed to detect HM from the water sample. Therefore the designed biosensor can be considered an ideal candidate for HM detection from the water samples.
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