Surface plasmon resonance and photoluminescence studies of Au and Ag micro-flowers
Document Type
Article
Publication Date
1-1-2015
Abstract
The surface plasmon resonance (SPR) and photoluminescence characteristics of gold and silver micro-flowers were compared to those of gold and silver nanoparticles. The microflower structures were grown under electron beam deposition using an alumina template. Both types of metallic micro-flowers showed systematic arrangements; they formed islands of flowers about 20 μm across, each one comprised of spikes ranging from 1 to 5 μm in length. A red shift in the SPR and enhancement intensity was observed for both micro-flowers and nanoparticles; the incremental increase was more than 50%. These results, which showed that gold and silver microflowers agglomerate at a micron size scale, are useful for the design of easier and more cost effective methods for large area fabrication, especially for particular plasmonic applications.
Keywords
Alumina, Cost effectiveness, Gold, Nanoparticles, Photoluminescence, Plasmons, Silver
Divisions
PHYSICS
Funders
University Malaya Research Grants RU 001-2014 and RP008E-13AET
Publication Title
Optical Materials Express
Volume
5
Issue
5
Publisher
Optical Society of America