25 November 2014 Surface plasmon resonance structures in spectral interrogation using high refractive index prism materials for sensing of different amino acids
Author Affiliations +
Abstract
A prism coupler-based nano-plasmonic sensor consisting of a high refractive index (RI) prism (2S2G-prism, LASF9-prism), gold (Au) metal film, and different amino acids as the dielectric sample is used for sensing in attenuated total internal reflection mode. An additional semiconductor (silicon) nano-layer over the gold surface has been used for increasing the stability and sensitivity of the surface plasmon resonance sensor. A comparative analysis of performance of the nano-plasmonic sensors in the spectral regime using these two high RI prism materials with an additional semiconductor nano-layer has been presented. The sensing performance of the proposed nano-plasmonic sensors in terms of evanescent field enhancement, spectral sensitivity, detection accuracy, figure of merit, and Q-factor with different amino acid samples has been discussed along with supporting theoretical simulations in a MATLAB® environment.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Sharmila Ghosh, Sharmila Ghosh, Mina Ray, Mina Ray, } "Surface plasmon resonance structures in spectral interrogation using high refractive index prism materials for sensing of different amino acids," Optical Engineering 53(11), 117108 (25 November 2014). https://doi.org/10.1117/1.OE.53.11.117108 . Submission:
JOURNAL ARTICLE
7 PAGES


SHARE
Back to Top