Graphene-Based Terahertz Plasmonic Sensor

This paper presents a theoretical analysis of a terahertz plasmonic sensor with graphene. The sensor is composed of five layers: prism, SiO 2 , graphene, dielectric sample, and air, where the graphene layer has infinitesimal thickness. The finite element method is used to analyze the electromagnetic...

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Bibliographic Details
Published in2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) pp. 1 - 3
Main Authors da Silva, Wendria C., Paiva, Rodrigo R., de Sousa, Gleida T. C., da Costa, Karlo Q.
Format Conference Proceeding
LanguageEnglish
Published IEEE 10.11.2019
Subjects
Chemicals
Dielectrics
Graphene
graphene plasmonic sensor
kretschmann and Otto configuration
Reflectivity
Resonant frequency
Sensitivity
Software
Terahertz waves
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Summary:This paper presents a theoretical analysis of a terahertz plasmonic sensor with graphene. The sensor is composed of five layers: prism, SiO 2 , graphene, dielectric sample, and air, where the graphene layer has infinitesimal thickness. The finite element method is used to analyze the electromagnetic response of the sensor. First a sensor in the Otto configuration is considered for model validation and comparison with data available in literature. Then we investigated the reflectivity and electromagnetic field responses of a sensor in the Kretschmann configuration, with and without examples of dielectric samples. The results show some similarities between graphene terahertz and metallic optical sensors.
DOI:10.1109/IMOC43827.2019.9317578