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Sensitivity enhancement of surface plasmon resonance sensor using Al–Au–BaTiO3–Graphene layers
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Sensitivity enhancement of surface plasmon resonance sensor using Al–Au–BaTiO3–Graphene layers
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Journal Article
Sensitivity enhancement of surface plasmon resonance sensor using Al–Au–BaTiO3–Graphene layers
2021
Overview
The performance of prism-based surface plasmon resonance sensor utilizing new sensing configuration composed of thin metallic (Al–Au) film coated with a thin layer of BaTiO
3
is investigated theoretically based on angular interrogation method. It is observed that optimizing the thickness of bimetallic (Al–Au) and BaTiO
3
layers, the sensitivity of the sensor improved greatly and still can maintain its minimum reflectivity and linewidth of the SPR reflectivity curve. We also observed addition of dual layer of graphene on BaTiO
3
further enhanced the sensitivity. The sensitivity of the proposed sensor is found to be 227 deg/RIU, and the FWHM of resonance curve is observed to be 4.47 deg for the thickness of 28 nm of Al, 8 nm of Au and 10 nm of BaTiO
3
added with double layer of graphene.
Publisher
Springer India,Springer Nature B.V
Subject
