Ultrahigh Sensitivity Surface Plasmon Resonance–Based Fiber-Optic Sensors Using Metal-Graphene Layers with Ti3C2Tx MXene Overlayers

Precise detection of volatile organic compounds (VOCs) using high-sensitivity fiber-optic probes is highly desirable for rapid screening in the fields of medicine and food processing. A novel spectral surface plasmon resonance (SPR)–based fiber-optic sensor incorporating metal/graphene/Ti 3 C 2 T x ...

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Bibliographic Details
Published in:Plasmonics (Norwell, Mass.) Mass.), 2020, Vol.15 (2), p.457-466
Main Authors: Sudheer, V. R., Kumar, S. R. Sarath, Sankararaman, S.
Format: Article
Language:English
Subjects:
Acetone
Aluminum
Biochemistry
Biological and Medical Physics
Biophysics
Biotechnology
Chemistry
Chemistry and Materials Science
Ethanol
Fiber optics
Food processing
Gold
Graphene
MXenes
Nanotechnology
Optical fibers
Refractivity
Sensitivity
Sensors
Silver
Surface plasmon resonance
VOCs
Volatile organic compounds
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Summary:Precise detection of volatile organic compounds (VOCs) using high-sensitivity fiber-optic probes is highly desirable for rapid screening in the fields of medicine and food processing. A novel spectral surface plasmon resonance (SPR)–based fiber-optic sensor incorporating metal/graphene/Ti 3 C 2 T x  MXene layers for the detection of VOCs such as acetone and ethanol is proposed in this study. For the detection of acetone, optimum sensitivities of 5150, 4500, and 4200 nm/refractive index unit (RIU) are obtained using simulations, for sensors with Au, Ag, and Al, respectively, as metal layer. The highest sensitivity achieved at reasonably good detection accuracy is 19,750 nm/RIU, using a Au/graphene/Ti 3 C 2 T x sensor, for VOCs with refractive index 1.434. Graphical Abstract
ISSN:1557-1955
1557-1963
DOI:10.1007/s11468-019-01035-3