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Laser stimulated nonlinear optics of Ag nanoparticle-loaded poriferous TiO2 microtablet

Nafisah S., Saad S. K. M., Umar A. A., Plucinski K., Lis M., Maciaga A., Miedzinski R.

Optica Applicata

2015

Vol. 45, nr 2

263--271

The studies of the photoinduced second harmonic generation were performed for the Ag-loaded poriferous TiO2 microtablets deposited on an ITO substrate. The poriferous TiO2 microtablets on a pre-cleaned ITO substrate (Kaivo, China, sheet resistance of ca. 10 Ω/square) were prepared by simply immersing the ITO substrate vertically into the growth solution that contains 5 ml of 0.5 M (NH4)2TiF6 (Sigma-Aldrich) and 5 ml of 1.0 M H3BO3 (R.M. Chemicals) for 15 h at room temperature. The samples were obtained from the growth solution with concentration of 0.4, 0.5 and 0.6 M. We have found that maximal second harmonic generation signal was achieved for the samples with concentration 0.5 M.