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Nano Lett. 2006 Apr;6(4):833-8.

Plasmonic properties of supported Pt and Pd nanostructures.

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  • 1Department of Applied Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden. christoph.langhammer@fy.chalmers.se

Abstract

The plasmonic properties of nanodisk arrays of Pt, Pd, and, for comparison, Ag are studied over a large size and spectral range and analyzed theoretically by an electrostatic model. Pt and Pd nanodisks exhibit broad localized surface plasmons with a higher sensitivity of the plasmon to the disk aspect ratio compared to Ag. Extinction cross-sections are generally about 50% smaller for Pt and Pd. The spectral plasmon positions, line-widths, and extinction cross-sections are well reproduced by the model.

PMID:
16608293
[PubMed - indexed for MEDLINE]
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