Optical characterization of YBa2Cu3O7− thin film modified gold nanoparticles
| Autor: | Wolfgang Fritzsche, P. Naujok, C. Katzer, J. Jatschka, G. Schmidl, Frank Schmidl |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
business.industry Scattering Scanning electron microscope General Physics and Astronomy Nanotechnology Surfaces and Interfaces General Chemistry Condensed Matter Physics Surfaces Coatings and Films Colloidal gold Condensed Matter::Superconductivity Microscopy Optoelectronics Particle Surface plasmon resonance Thin film business Plasmon |
| Zdroj: | Applied Surface Science. 357:340-345 |
| ISSN: | 0169-4332 |
| Popis: | We report on the influence of YBa2Cu3O7−δ (YBCO) thin films on the self-organized formation of gold nanoparticles. A thickness variation of the YBCO film allows one to actively control the size of the particles and their density distribution. In this context, the particle forming process is discussed. The YBCO matrix can be removed in order to reduce the particle density on the substrate. The remaining modified particles can be used in plasmonic applications. Combining scanning electron microscopy and dark-field microscopy permits one to identify a correlation of the measured scattering spectra with the physical properties of each studied particle. A clear assignment of spectrum and particle is supported by a new Ti-marker technology and image processing. Growth parameters allow the scientist to tune the spectral peak position of the plasmon resonance and the spectral bandwidth. |
| Databáze: | OpenAIRE |
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