Nanoscale color control of TiO2 films with embedded Au nanoparticles
| Autor: | Mikhail Vasilevskiy, Luís Miguel Cunha, Md. R. Kabir, M. Torrell, Albano Cavaleiro, Filipe Vaz |
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| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Materials science
Physics::Medical Physics Analytical chemistry Physics::Optics Nanoparticle 02 engineering and technology 010402 general chemistry 01 natural sciences Condensed Matter::Materials Science Sputtering Phase (matter) General Materials Science Dielectric function Surface plasmon resonance Nanoscopic scale Science & Technology Dielectric matrix business.industry Mechanical Engineering 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Optical absorption spectra Mechanics of Materials Optoelectronics 0210 nano-technology business |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | Article in press 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. Fundação para a Ciência e a Tecnologia (FCT) - PTDC/CTM/70037/2006. |
| Databáze: | OpenAIRE |
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