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Article Dans Une Revue Nano Letters Année : 2011

Optical and topological characterization of gold nanoparticle dimers linked by a single DNA double-strand

Brice Rolly
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Brian Stout
Nicolas Bonod

Résumé

We demonstrate that symmetric or asymmetric gold nanoparticle dimers with substantial scattering cross sections and plasmon coupling can be produced with a perfectly controlled chemical environment and a high purity using a single DNA linker as short as 7 nm. A statistical analysis of the optical properties and morphology of single dimers is performed using darkfield and cryo-electron microscopies. These results, correlated to Mie theory calculations, indicate that the particle dimers are stretched in water by electrostatic interactions.
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Dates et versions

hal-00639721 , version 1 (09-11-2011)

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Mickaël P. Busson, Brice Rolly, Brian Stout, Nicolas Bonod, Eric Larquet, et al.. Optical and topological characterization of gold nanoparticle dimers linked by a single DNA double-strand. Nano Letters, 2011, 11 (11), pp.5060. ⟨10.1021/nl2032052⟩. ⟨hal-00639721⟩
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