Journal
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
Volume 5, Issue -, Pages 1419-1431Publisher
BEILSTEIN-INSTITUT
DOI: 10.3762/bjnano.5.154
Keywords
noble metal-titania nanocomposite; surface plasmon resonance; swift heavy ions
Funding
- Alexander von Humboldt Foundation
- German Science Foundation (DFG)
- Department of Science and Technology (DST)
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The development of new fabrication techniques of plasmonic nanocomposites with specific properties is an ongoing issue in the plasmonic and nanophotonics community. In this paper we report detailed investigations on the modifications of the microstructural and plasmonic properties of metal-titania nanocomposite films induced by swift heavy ions. Au-TiO2 and Ag-TiO2 nanocomposite thin films with varying metal volume fractions were deposited by co-sputtering and were subsequently irradiated by 100 MeV Ag8+ ions at various ion fluences. The morphology of these nanocomposite thin films before and after ion beam irradiation has been investigated in detail by transmission electron microscopy studies, which showed interesting changes in the titania matrix. Additionally, interesting modifications in the plasmonic absorption behavior for both Au-TiO2 and Ag-TiO2 nanocomposites were observed, which have been discussed in terms of ion beam induced growth of nanoparticles and structural modifications in the titania matrix.
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