Zolotavin, P. N. and Petrukhin, A. N. and Permenova, E. P. and Sarkisov, O. M. and Nadtochenko , V. A. (2008) The formation of "hot spots" in mesoporous TiO2 films by photodeposited silver nanoparticles for use in nonlinear optical spectroscopy of isolated molecules. Nanotechnologies in Russia, Volume 3 (1-2). pp. 122-127.
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The excitation of silver photocatalytically deposited on the surface of TiO2 nanoparticles that formed a mesoporous film with femtosecond titanium-sapphire laser pulses caused two-photon luminescence of silver clusters. Luminescence was detected by scanning laser spectroscopy as hot spots. The system with silver on TiO2 had a high concentration of luminescing silver nanoparticles, which were fairly stable to degradation at long exposures. It was assumed that the high concentration of luminescing spots was caused by a high concentration of localized surface plasmons in the Ag/TiO2 system. The Ag/TiO2 system therefore offers promise for use in the spectroscopy of isolated molecules and visualization of biological objects.
|Subjects:||Physical Science > Nanophysics|
Physical Science > Nano objects
Physical Science > Quantum phenomena
|Deposited By:||Prof. Alexey Ivanov|
|Deposited On:||19 Dec 2008 13:15|
|Last Modified:||01 Feb 2009 20:23|
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