Abstract
Samarium doped chalcogenide core, perfluorinated polymer clad with Ag metal and plasmonic 2D materials based plasmonic fiber-optic sensor is simulated and analyzed in near-infrared (NIR) wavelength regime. Proposed sensor is directed at the detection of the malignancy stages of liver tissues. The performance analysis (in terms of figure-of-merit, i.e., FOM) was carried out taking into account the MoS2 and graphene monolayers as performance enhancing 2D materials. The analysis suggests that FOM values of MoS2-based sensor probe are better than graphene-based probe. Further, a comparative study shows that fiber-optic probe is able to provide much better performance than prism-based probes. The FOM gets better for longer wavelength. The specificity of the biosensor can be improved by employing a suitable buffer layer (1–15 nm) as a bio-recognition element.
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Acknowledgements
Baljinder Kaur acknowledges the MHRD (India) for support in form of research assistantship. This work is partially supported by the CSIR (India) project Grant no. 03(1441)/18/EMR-II.
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Kaur, B., Sharma, A.K. Plasmonic Biosensor in NIR with Chalcogenide Glass Material: On the Role of Probe Geometry, Wavelength, and 2D Material. Sens Imaging 19, 36 (2018). https://doi.org/10.1007/s11220-018-0220-0
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DOI: https://doi.org/10.1007/s11220-018-0220-0