Surface plasmon resonance and photoluminescence studies of Au and Ag micro-flowers

Zakaria, R. and Hamdan, K.S. and Noh, S.M.C. and Supangat, A. and Sookhakian, M. (2015) Surface plasmon resonance and photoluminescence studies of Au and Ag micro-flowers. Optical Materials Express, 5 (5). pp. 943-950. ISSN 2159-3930, DOI

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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.

Item Type: Article
Funders: University Malaya Research Grants RU 001-2014 and RP008E-13AET
Uncontrolled Keywords: Alumina; Cost effectiveness; Gold; Nanoparticles; Photoluminescence; Plasmons; Silver
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 19 Sep 2018 04:14
Last Modified: 19 Sep 2018 04:14

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