Optically stimulated luminescence under plasmon resonance conditions

• Grant number: 11/09521-8
• Support type: Scholarships in Brazil - Doctorate
• Effective date (Start): August 01, 2011
• Effective date (End): April 30, 2015
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal researcher: Oswaldo Baffa Filho
• Grantee: Éder José Guidelli
• Home Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil

Abstract

Optically stimulated luminescence (OSL) is a well knownwell-known light emission process involving light stimulation of an insulator/semi-conductor material previously exposed to ionizing radiation. The intensity of the emitted light is proportional to the ionizing radiation dose previously absorbed by the material. Developing appropriate OSL materials for radiation detection and dosimetry is based on doping and co-doping of a host material to create defects that can act as traps and/or luminescent centers. In this context, plasmon interaction with luminescent centers from OSL materials could be a new, different, and unexplored method to achieve enhanced OSL intensity and consequently improve their sensitivity as radiation detectors. In this proposal, It Will be investigated whether it is possible to use the plasmonic properties of noble metal nanoparticles to obtain plasmon-enhanced OSL, giving rise to new and more sensitive ionizing radiation detectors and dosimeters.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

GUIDELLI, EDER JOSE; RAMOS, ANA PAULA; BAFFA, OSWALDO. Unconventional Increase in Non-Radiative Transitions in Plasmon-Enhanced Luminescence: A Distance-Dependent Coupling. SCIENTIFIC REPORTS, v. 6, NOV 16 2016. Web of Science Citations: 1.

GUIDELLI, EDER JOSE; RAMOS, ANA PAULA; BAFFA, OSWALDO. Silver nanoparticle films for metal enhanced luminescence: Toward development of plasmonic radiation detectors for medical applications. SENSORS AND ACTUATORS B-CHEMICAL, v. 224, p. 248-255, MAR 1 2016. Web of Science Citations: 11.

GUIDELLI, EDER JOSE; RAMOS, ANA PAULA; BAFFA, OSWALDO. Enhancing and quenching luminescence with gold nanoparticle films: the influence of substrate on the luminescent properties. Nanotechnology, v. 27, n. 1 JAN 8 2016. Web of Science Citations: 2.

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

GUIDELLI, Éder José. Optically stimulated luminescence under plasmon resonance conditions. 2015. Doctoral Thesis - Universidade de São Paulo (USP). Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto Ribeirão Preto.