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Plasmonic-ceria nanoparticles for automated optical fluorescence-quenching of dissolved oxygen
Author(s): N. Shehata; E. Samir; I. Kandas; M. Azab; B. Mokhtar
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Paper Abstract

Due to its optical and structural characteristics, cerium oxide (ceria) nanoparticles have been used in wide variety of applications. This paper introduces the enhancement of visible fluorescence emission of ceria nanoparticlesthrough adding plasmonicgold nanoparticles (Au NPs) under violet excitation. Au NPs lead to enhance the formation of tri-valent ionization states of cerium ions with corresponding oxygen vacancies formation. In addition, the coupling between plasmonic waves of gold and emission spectrum of ceria offers another contribution to the enhancement of fluorescence intensity.Then, gold-ceria nanoparticles have been applied as optical sensing material for dissolved oxygen in aqueous media based on fluorescence quenching mechanism.The sensed data is automatically collected and processed through a wireless sensor network-based communication infrastructure with smartdata and feedback management capability.

Paper Details

Date Published: 19 September 2018
PDF: 7 pages
Proc. SPIE 10730, Nanoengineering: Fabrication, Properties, Optics, and Devices XV, 107300U (19 September 2018); doi: 10.1117/12.2320097
Show Author Affiliations
N. Shehata, Alexandria Univ. (Egypt)
Kuwait College of Science and Technology (Kuwait)
Utah State Univ. (United States)
E. Samir, Alexandria Univ. (Egypt)
I. Kandas, Alexandria Univ. (Egypt)
Kuwait College of Science and Technology (Kuwait)
M. Azab, City of Scientific Research and Technological Applications (Egypt)
Virginia Military Institute (United States)
B. Mokhtar, Alexandria Univ. (Egypt)

Published in SPIE Proceedings Vol. 10730:
Nanoengineering: Fabrication, Properties, Optics, and Devices XV
Balaji Panchapakesan; Anne E. Sakdinawat; André-Jean Attias; Elizabeth A. Dobisz, Editor(s)

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