Journal
JOURNAL OF APPLIED PHYSICS
Volume 125, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5050467
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Funding
- European Union
- Greek national funds through the Operational Program Competitiveness, Entrepreneurship and Innovation, under the call RESEARCH-CREATE-INNOVATE [T1EDK-04659]
- Andreas Mentzelopoulos Scholarships for the University of Patras
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Self-assembled nanoparticles were formed after annealing ultrathin Ag films, which were grown on glass and quartz by direct current magnetron sputtering, in a furnace in air at 420 degrees C, 500 degrees C, or 600 degrees C. Intense localized surface plasmon resonances were observed for these samples in the entire range of visible light spectrum depending on the annealing time and nanoparticle size. Prolonged annealing resulted in the formation of nanorings and the change of the position and shape of resonances. The nanoring formation is attributed to partial evaporation of silver due to trapping of electromagnetic field by the larger nanoparticles despite the relatively low annealing temperature. Finally, in order to gain a further physical insight, the experimental results are compared with respect to rigorous theoretical calculations. Published under license by AIP Publishing.
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