Journal article

The surface plasmon modes of self-assembled gold nanocrystals

Steven J Barrow, Xingzhan Wei, Julia S Baldauf, Alison M Funston, Paul Mulvaney



The three-dimensional (3D) self-assembly of nanocrystals constitutes one of the most important challenges in materials science. A key milestone is the synthesis of simple, regular structures, such as platonic solids, composed of nanocrystal building blocks. Such objects are predicted to have unique optical and electronic properties such as polarization-independent light-scattering and intense local fields. Here we present a two-stage process for fabricating well-defined and highly symmetric, 3D gold nanocrystal structures, including tetrahedra, 3D pentamers and 3D hexamers. Polarized scattering spectra are used to elucidate the plasmon modes present in each structure, and these are compared ..

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University of Melbourne Researchers


Awarded by ARC LF Grant

Awarded by ARC

Funding Acknowledgements

This work was supported through ARC LF Grant 100100117. The modelling work (computational resources and COMSOL software) was supported by an award under the Merit Allocation Scheme on the NCI National Facility at the ANU. A.M.F. acknowledges the support of the ARC through FT110100545. We thank Sergey Rubanov for assistance with FIB/SEM. S.J.B. would like to thank the University of Melbourne for the Ernst and Grace Matthaei research scholarship. This work was performed in part at the Melbourne Centre for Nanofabrication.