Abstract
Metamaterial based surface plasmon resonance biosensor for enhancement of performance parameters at near infrared wavelengths is presented. The thickness of the metamaterial layer and gold layer were optimized at near infrared wavelengths. The performance parameters of the SPR sensor are defined in terms of sensitivity, detection accuracy and quality factor. By the addition of a metamaterial layer the sensitivity is enhanced but the quality factor and detection accuracy is slightly decreased. Hence, further to increase the quality factor and detection accuracy a silicon layer is included between the gold and metamaterial layers. It was observed that the full width at half maximum (FWHM) of reflectance curve is minimized up to great extent with little decrement in the sensitivity due to the inclusion of the silicon layer.
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