Excitation of mechanical modes in gold nanorods

Gregory V. Hartland; Min Hu; Orla Wilson; Paul Mulvaney

doi:10.1117/12.471958

13 November 2002 Excitation of mechanical modes in gold nanorods

Gregory V. Hartland, Min Hu, Orla Wilson, Paul Mulvaney

Proceedings Volume 4934, Smart Materials II; (2002) https://doi.org/10.1117/12.471958
Event: SPIE's International Symposium on Smart Materials, Nano-, and Micro- Smart Systems, 2002, Melbourne, Australia

Abstract

The acoustic vibrational modes of Au nanorods with aspect ratios between 2.1 and 5.5 have been investigated by timeresolved spectroscopy. The results show that laser excitation launches a coherent vibrational motion which has a period that depends linearly on the length of the rod. Due to polydispersity in the samples, the measured period also depends on the probe wavelength (i.e., for a given sample different probe wavelengths interrogate different length rods). Analysis of the data potentially provides information about the elastic properties of these unique materials.

Citation Download Citation

Gregory V. Hartland, Min Hu, Orla Wilson, and Paul Mulvaney "Excitation of mechanical modes in gold nanorods", Proc. SPIE 4934, Smart Materials II, (13 November 2002); https://doi.org/10.1117/12.471958

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