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Nano Lett. 2011 Oct 12;11(10):4180-7. doi: 10.1021/nl202080a. Epub 2011 Sep 7.

Surface plasmon resonances in strongly coupled gold nanosphere chains from monomer to hexamer.

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  • 1School of Chemistry and Bio21 Institute, The University of Melbourne , Parkville, Victoria, 3010, Australia.


We present experimental data on the light scattering properties of linear chains of gold nanoparticles with up to six nanoparticles and an interparticle spacing of 1 nm. A red shift of the surface plasmon resonance with increasing chain length is observed. An exponential model applied to the experimental data allows determination of an asymptotic maximum resonance at a chain length of 10-12 particles. The optical data are compared with analytical and numerical calculation methods (EEM and BEM).

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