Banca de QUALIFICAÇÃO: GABRIEL DE FREITAS FERNANDES

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : GABRIEL DE FREITAS FERNANDES
DATE: 26/09/2023
LOCAL: Sessão por videoconferência (fechada ao público)
TITLE:

RPS SPECTROSCOPY WITH TUNABLE DIODE LASER: THEORY AND APPLICATIONS.

KEY WORDS:

Plasmonics. Diffraction gratings. Spectroscopy. Optical sensors.

PAGES: 82
BIG AREA: Engenharias
AREA: Engenharia Elétrica
SUMMARY:

The current thesis project aims to explore techniques for the construction of optical sensors based on the Surface Plasmon Resonance (SPR) phenomenon, operating at a fixed angle. The primary objective is to seek a solution that is more easily miniaturizable and applicable in the field. In this context, we propose the use of Distributed Feedback (DFB) lasers in wavelength-scanning mode, in conjunction with metallic diffraction gratings, for observing the resonance. Furthermore, we will investigate the feasibility of applying wavelength modulation spectroscopy (WMS) techniques to enhance the sensor's sensitivity, and we will also explore long-length gratings and resonance modes beyond the fundamental. Additionally, this work includes computational investigations of suitable structures for gaseous and liquid samples, as well as the exploration of applications related to gas detection. This research project aims to make a significant contribution to the advancement of knowledge and practical applications related to the SPR phenomenon in optical sensors.

 

 

COMMITTEE MEMBERS:
Externo à Instituição - DIEGO JOSÉ RATIVA MILLAN - UPE
Presidente - 2226204 - JOAQUIM FERREIRA MARTINS FILHO
Interno - 2199776 - RENATO EVANGELISTA DE ARAUJO