Banca de DEFESA: FLÁVIO SILVA SANTOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : FLÁVIO SILVA SANTOS
DATA : 31/05/2021
HORA: 16:40
LOCAL: https://conferenciaweb.rnp.br/webconf/labtelufba
TÍTULO:

Metamaterial absorbers based on water for microwaves applications

PALAVRAS-CHAVES:

Absorbers. Metamaterials. Permitivitty

PÁGINAS: 77
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Elétrica
SUBÁREA: Telecomunicações
ESPECIALIDADE: Teoria Eletromagnetica, Microondas, Propagação de Ondas, Antenas
RESUMO:

In this dissertation, the behavior of purely dielectric absorber metamaterials models based on water in relation to certain geometric aspects and different materials in their composition were analyzed numerically, in order to understand the physical aspects of absorption, for absorption levels above 90% in a broadband frequency in the microwave range. The absorbent metamaterials were analyzed in a large frequency band, between 4.99 GHz - 29.99 GHz, using the resins found in the current literature, they are: Resin [1], Resin [21], PMMA [1], PMMA, [4], Plexiglas [3], Photopolymer [9], UV-PR [5], VC810 [9], TPU [7], FR4 [23], FR4 [24], FR4-LPM [6], and UV-PR [5]. For them, Transversal Electric (TE) and Magnetic (TM) modes were analyzed at different angles of incidence (15º, 30º, 45º and 60º) of electromagnetic beams. Finally, it was observed for some of the proposed structures, absorption above 90% for large frequency broadband and ultra frequency broadband, being able to observe the behavior of water at different temperatures (27 ºC, 40 ºC, 60 ºC, 80 ºC and 100 ºC). Such structures are easy to build to be manufactured, have a low production cost and the possibility for technological application in optical communications.

MEMBROS DA BANCA:
Interno - 1521970 - VITALY FELIX RODRIGUEZ ESQUERRE
Externo à Instituição - JUAREZ CAETANO DA SILVA - IFBA
Externa à Instituição - ANA JÚLIA FERNANDES DE OLIVEIRA BARROS