Banca de DEFESA: ISRAEL ALVES OLIVEIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : ISRAEL ALVES OLIVEIRA
DATA : 01/07/2021
HORA: 15:00
LOCAL: https://conferenciaweb.rnp.br/webconf/labtelufba
TÍTULO:

Tunable absorbers based on Phase Change Materials

PALAVRAS-CHAVES:

Phase change materials, Reconfigurability, Plasmonic Absorbers, Finite
Element Method.

PÁGINAS: 91
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Elétrica
SUBÁREA: Telecomunicações
ESPECIALIDADE: Teoria Eletromagnetica, Microondas, Propagação de Ondas, Antenas
RESUMO:

The Chalcogenide phase change materials are potentially advantageous elements and
are known for their high data retention capacity. When integrated into electromagnetic
absorber structures, they are able to control the effects of absorption over a wide range
of wavelengths due to the optical contrast caused by the modulation of their refractive
index. In this dissertation, plasmonic absorber structures were analyzed, using a layer of
chalcogenide phase change material (GeTe) in the infrared spectrum range (1000-2200
nm). Through the Lorentz-Lorenz relation it was possible to control the resonance and
geometry peaks through functions in the two studied cases. The physical mechanisms of
absorbers interacting with incident light and the phenomena caused were also analyzed.
The absorbers were analyzed in normal and oblique incidence in Transverse Electric
(TE) and Transverse Magnetic (TM) polarization modes and the results achieved were
higher than 93%. These structures are potential applications for several technologies
employed in reconfigurable nanophotonic devices.

MEMBROS DA BANCA:
Interno - 1521970 - VITALY FELIX RODRIGUEZ ESQUERRE
Interno - 2722643 - IGOR LEONARDO GOMES DE SOUZA
Externo à Instituição - JOAQUIM JÚNIOR ISÍDIO DE LIMA
Externo à Instituição - HUGO ENRIQUE HERNANDEZ FIGUEROA
Externo à Instituição - MARCO ISAIAS ALAYO CHAVEZ