Journal
MATERIALS LETTERS
Volume 64, Issue 23, Pages 2624-2626Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2010.08.031
Keywords
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Funding
- FEDER
- FCT-Fundacao para a Ciencia e a Tecnologia [PTDC/CTM/70037/2006]
- Fundação para a Ciência e a Tecnologia [PTDC/CTM/70037/2006] Funding Source: FCT
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We demonstrate an efficient nanoscale control of the optical properties of TiO2 films by tuning the Surface Plasmon Resonance (SPR) in the embedded Au nanoparticles. The films were grown by reactive magnetron sputtering. SPR tuning was achieved by different annealings, which affected the shape and size of the Au nanoparticles, and also the phase of the dielectric matrix. These changes promoted the variations on the optical properties. As shown by the modeling of the effective dielectric function of the TiO2/Au in the SPR region, the variation of their optical absorption spectra correlates with morphological changes. (C) 2010 Elsevier B.V. All rights reserved.
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