TY - GEN
T1 - Optical sensing of metal tiny particles using ceria nanoparticles via fluorescence quenching technique
AU - Shehata, N.
AU - Samir, E.
AU - Gaballah, S.
AU - Rizk, M. R.M.
AU - Mokhtar, B.
AU - Azab, M.
N1 - Publisher Copyright:
© 2017 SPIE.
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
KW - ceria nanoparticles
KW - fluorescence quenching
KW - metallic tiny particles
KW - Stern-Volmer constant.
UR - http://www.scopus.com/inward/record.url?scp=85029899973&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85029899973&partnerID=8YFLogxK
U2 - 10.1117/12.2256793
DO - 10.1117/12.2256793
M3 - Conference contribution
AN - SCOPUS:85029899973
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017
A2 - Lynch, Jerome P.
PB - SPIE
T2 - Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017
Y2 - 26 March 2017 through 29 March 2017
ER -