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Advanced Materials

Mesoscopic Au “Meatball” Particles

Authors

  • H. Wang,

    1. Department of Chemistry, Department of Electrical and Computer Engineering and the, Laboratory for Nanophotonics (LANP), Rice University, 6100 South Main St., Houston, TX 77005 (USA)
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  • N. J. Halas

    1. Department of Chemistry, Department of Electrical and Computer Engineering and the, Laboratory for Nanophotonics (LANP), Rice University, 6100 South Main St., Houston, TX 77005 (USA)
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  • This work was supported by Air Force Office of Scientific Research Grant F49620-03-C-0068, National Science Foundation (NSF) Grant EEC-0304097, National Aeronautics and Space Administration (NASA) Grant 68371, Robert A. Welch Foundation Grants C-1220, Army Research Office (ARO) Grant DAAD19-99-1-0315, and Multidisciplinary University Research Initiative (MURI) Grant W911NF-04-01-0203.

Abstract

Sub-micrometer meatball-like Au particles provide a very interesting mesoscopic regime in which their optical responses are determined by both the mesoscopic size and the particle's nanoscale surface roughness. The unique optical properties of these mesoscopic particles and particle arrays hold great potential in chemical sensing and spectroscopic applications.

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