Advanced search
Start date
Betweenand

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.

News published in Agência FAPESP Newsletter about the scholarship:
Nanopartículas podem ser base para detectores mais sensíveis de radiação 
Nanoparticles could be a basis for more sensitive radiation detectors 
Nanopartículas pueden constituir la base de detectores de radiación más sensibles 

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.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.

Filed patent(s) as a result of this research project

USO DE NANOESTRUTURAS METÁLICAS PARA AUMENTAR A EMISSÃO LUMINESCENTE DE MATERIAIS UTILIZADOS COMO DETECTORES DE RADIAÇÃO BR1020130109975 - Universidade de São Paulo (USP) . Oswaldo Baffa Filho; Éder José Guidell - May 2013, 03