Surface Plasmon Resonance Band of Ion-Synthesized Ag Nanoparticles in High Dose Ag:PMMA Nanocomposite Films
Characterization of nanocomposites prepared by Ag ion implantation into polymethylmethacrylate (PMMA) at different doses (2.5 × 1016, 1.0 × 1017, and 1.5 × 1017 Ag+/cm2) with a constant energy of 30 keV and a current density of 1 μA/cm2 in order to prepare Ag nanoparticles (NPs) was performed by UV-Vis spectroscopy. For the first time an absorption band at a wavelength of 355 nm for the highest dose sample was observed experimentally. Changes of size and filling factor of Ag NPs in the near-surface region of ion-implanted polymers are suggested to explain this result. However, further verification is needed with more informative technique such as, for example, slow positron beam spectroscopy to probe near-surface nanometer size depth profiles.
KeywordsPolymers Ion implantation Nanocomposite films Surface plasmon resonance Metal nanoparticles Optical spectroscopy
T.S. Kavetskyy and M.M. Kravtsiv acknowledge the Ministry of Education and Science of Ukraine (projects Nos. 0116U004737, 0117U007142 (for Young Scientists) and 0117U007143).
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