Optical properties of TiO2:Ag composites

Krzysztof Skorupski

doi:10.1117/12.2052262

2 May 2014 Optical properties of TiO₂:Ag composites

Krzysztof Skorupski

Proceedings Volume 9125, Metamaterials IX; 91251J (2014) https://doi.org/10.1117/12.2052262
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

Abstract

The main goal of our research was to investigate the optical properties of nanocomposites, created by combining titanium dioxide with noble metals. Our research was focused on silver Ag, which reveals strong plasmonic effects in the visible spectrum, and rutile TiO₂ - a commonly used semiconductor material that does not present any significant optical properties in the mentioned range of electromagnetic waves. Our results show that when coating is considered (i.e. the TiO₂ particle is covered by an additional Ag layer) the position of the extinction peak can be manipulated and shifted towards lower wavelengths. However, when the main TiO₂ particle is surrounded by small Ag spheres, such extinction peak occurs at a fixed wavelength only and cannot be adjusted.

Citation Download Citation

Krzysztof Skorupski "Optical properties of TiO₂:Ag composites", Proc. SPIE 9125, Metamaterials IX, 91251J (2 May 2014); https://doi.org/10.1117/12.2052262

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