Coordinated Tuning of Graphene's Chemica Potential With NIR Wavelength and Temperature Under Kubo Framework for Enhanced Performance of SPR-Based Chemical Sensor

Sharma, Anui K and Dominic, Anumol (2018) Coordinated Tuning of Graphene's Chemica Potential With NIR Wavelength and Temperature Under Kubo Framework for Enhanced Performance of SPR-Based Chemical Sensor. In: IEEE SENSORS JOURNAL, 18 (22). pp. 9207-9213.

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Abstract

The performance of a Kretschmann configuration-based surface plasmon resonance sensor with fluoride glass prism, Ag layer, and graphene monolayer is simulated and analyzed under the coordinated tuning of temperature (293-373 K), near infrared (NIR) wavelength (1310-1700 nm), and graphene's chemical potential (0-1 eV). The simulation is carried out by considering the graphene's conductivity variations with wavelength, temperature, and chemical potential (As per Kubo formulation). For Ag layer, the phenomena of phononelectron scattering and electron-electron scattering are taken into account. Thermo-optic effect in dielectric media (ZBLAN prism and analyte samples, i.e., methanol and ethanol) is also considered. The simulation results indicate that a combination of shorter MR wavelength, higher temperature, and larger chemical potential can provide considerably enhanced performance. A deeper analysis predicts that 1310 nm wavelength, greater than 0.6 eV chemical potential, and 325-330 K temperature can he used as a pragmatic combination in order to achieve significantly enhanced sensing performance.

Item Type:	Journal Article
Publication:	IEEE SENSORS JOURNAL
Publisher:	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Additional Information:	Copy right for this article belong to IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Keywords:	Graphene; plasmon; sensor; doping; infrared; temperature
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	19 Nov 2018 15:50
Last Modified:	19 Nov 2018 15:50
URI:	http://eprints.iisc.ac.in/id/eprint/61103

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