2022-08-222022-08-222020-03-11SILVA, Wêndria Cunha da. Modelagem de sensores plasmônicos em terahertz baseados em grafeno. Orientador: Karlo Queiroz da Costa; Coorientador: Rodrigo Rodrigues Paiva. 2020. 69 f. Trabalho de Curso (Bacharelado em Engenharia Elétrica) – Faculdade de Engenharia Elétrica, Campus Universitário de Tucuruí, Universidade Federal do Pará, Tucuruí, 2020. Disponível em: https://bdm.ufpa.br:8443/jspui/handle/prefix/4307. Acesso em:.https://bdm.ufpa.br/handle/prefix/4307This coursework presents a theoretical analysis of a plasmonic sensor, in terahertz, based on graphene. This sensor consists of five layers: prism, SiO2, graphene, dielectric sample and air, with the graphene layer having infinitesimal thickness. The Finite Element Method (FEM) is used to analyze the electromagnetic response of the sensor using the COMSOL Multiphysics 5.3a software. First, a sensor, in the Otto configuration, is considered for model validation and comparison with data available in the literature. Then we investigate the reflectivity responses and electromagnetic field responses of a sensor in the Kretschmann configuration, for the case without a dielectric sample and after inserting one, where the size of the thickness of this sample was varied to analyze the differences in the sensor response. The results show some similarities between graphene in terahertz and metallic optical sensors.Acesso AbertoOndas em terahertzSensor plasmônico em grafenoConfiguração de Kretschmann e OttoTerahertz wavesGraphene plasmonic sensorKretschmann and Otto configurationCNPQ::ENGENHARIAS::ENGENHARIA ELETRICATrabalho de Curso - Graduação - Monografia