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Proceedings Paper

Optical sensing of metal tiny particles using ceria nanoparticles via fluorescence quenching technique
Author(s): N. Shehata; E. Samir; S. Gaballah; M. R. M. Rizk; B. Mokhtar; M. Azab
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Paper Abstract

In this paper, ceria nanoparticles are studied as optical probe for different types of metallic tiny particles via fluorescence quenching technique. The synthesized ceria nanoparticles are formed to have charged oxygen vacancies which can be considered the receptors for metal tiny particles to be sensed or adsorbed. Under near-UV excitation, the visible fluorescent emission intensity is found to be reduced with increasing the concentration of tiny particles in the colloidal synthesized nanoparticles' solution. Stern-Volmer constants, which are considered as an indication for the sensitivity to quenchers, have been calculated for the used ceria nanoparticles. This work could be further helpful in many applications such as, sensitive optical sensors in both biomedical and environmental applications.

Paper Details

Date Published: 12 April 2017
PDF: 6 pages
Proc. SPIE 10168, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017, 101681N (12 April 2017); doi: 10.1117/12.2256793
Show Author Affiliations
N. Shehata, Alexandria Univ. (Egypt)
Utah State Univ. (United States)
Kuwait College of Science and Technology (Kuwait)
E. Samir, Alexandria Univ. (Egypt)
S. Gaballah, Alexandria Univ. (Egypt)
M. R. M. Rizk, Alexandria Univ. (Egypt)
B. Mokhtar, Alexandria Univ. (Egypt)
M. Azab, Alexandria Univ. (Egypt)
City of Scientific Research and Technological Applications (Egypt)

Published in SPIE Proceedings Vol. 10168:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017
Jerome P. Lynch, Editor(s)

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