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Improved Transition Metal Dichalcogenides-Based Surface Plasmon Resonance Biosensors

1
Rajshahi University of Engineering & Technology, Kazla Rajshahi 6204, Bangladesh
2
SeedNanoTech & Consulting, Brampton, ON L6Y3J6, Canada
*
Author to whom correspondence should be addressed.
Condens. Matter 2019, 4(2), 49; https://doi.org/10.3390/condmat4020049
Received: 13 April 2019 / Revised: 10 May 2019 / Accepted: 21 May 2019 / Published: 22 May 2019
(This article belongs to the Special Issue Magnetoplamonics Material and Devices)
Surface plasmon resonance (SPR) biosensors based on transition metal dichalcogenides (TMDC) materials have shown improved performance in terms of sensitivity, detection accuracy (DA), and quality factor (QF) over conventional biosensors. In this paper, we propose a five-layers model containing black phosphorus (BP) and TMDC (Ag/BP/WS2) in Kretschmann configuration. Using TM-polarized light at 633 nm, we numerically demonstrate the highest sensitivity (375°/RIU), DA (0.9210), and QF (65.78 1/RIU) reported so far over similar materials. Refractive index (RI) of the coupling prism has also played an essential role in enhancing the performance of these biosensors. The research on TMDC materials is still new, and these materials bring about opportunities to develop a new class of biosensor. View Full-Text
Keywords: transition metal di-chalcogenides; surface plasmon resonance; sensitivity; detection accuracy; quality factor; biosensor transition metal di-chalcogenides; surface plasmon resonance; sensitivity; detection accuracy; quality factor; biosensor
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MDPI and ACS Style

Hasib, M.H.H.; Nur, J.N.; Rizal, C.; Shushama, K.N. Improved Transition Metal Dichalcogenides-Based Surface Plasmon Resonance Biosensors. Condens. Matter 2019, 4, 49.

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