Plasmon and compositional mapping of plasmonic nanostructures

Emilie Ringe; Sean M. Collins; Christopher J. DeSantis; Sara E Skrabalak; Paul A. Midgley

doi:10.1117/12.2073886

13 November 2014 Plasmon and compositional mapping of plasmonic nanostructures

Emilie Ringe, Sean M. Collins, Christopher J. DeSantis, Sara E Skrabalak, Paul A. Midgley

Proceedings Volume 9278, Plasmonics; 92780J (2014) https://doi.org/10.1117/12.2073886
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

Recently, co-reduction of Au and Pd has allowed the synthesis of complex Au core/AuPd shell nanoparticles with elongated tips and cubic-like symmetry. Optical studies have shown strong plasmonic behavior and high refractive index sensitivities. In this paper, we describe the composition and the near-field plasmonic behavior of those complex structures. Monochromated STEM-EELS, Cathodoluminescence, and EDS mapping reveals the different resonant modes in these particles, and shows that Pd, a poor plasmonic metal, does not prevent strong resonances and could actually be extremely helpful for plasmon-enhanced catalysis.

Citation Download Citation

Emilie Ringe, Sean M. Collins, Christopher J. DeSantis, Sara E Skrabalak, and Paul A. Midgley "Plasmon and compositional mapping of plasmonic nanostructures", Proc. SPIE 9278, Plasmonics, 92780J (13 November 2014); https://doi.org/10.1117/12.2073886

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