Three-dimensional self-assembling of gold nanorods with controlled macroscopic shape and local smectic B order. - Université de Rennes Accéder directement au contenu
Article Dans Une Revue ACS Nano Année : 2012

Three-dimensional self-assembling of gold nanorods with controlled macroscopic shape and local smectic B order.

Résumé

We describe a method of controlled evaporation on a textured substrate for self-assembling and shaping gold-nanorod-based materials. Tridimensional wall features are formed over areas as large as several square millimeters. Furthermore, analyses by small-angle X-ray scattering and scanning electron microscopy techniques demonstrate that colloids are locally ordered as a smectic B phase. Such crystallization is in fact possible because we could finely adjust the nanoparticle charge, knowledge that additionally enables tuning the lattice parameters. In the future, the type of ordered self-assemblies of gold nanorods we have prepared could be used for amplifying optical signals.
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Dates et versions

hal-00846622 , version 1 (19-07-2013)

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Cyrille Hamon, Marie Postic, Elsa Mazari, Thomas Bizien, Christophe Dupuis, et al.. Three-dimensional self-assembling of gold nanorods with controlled macroscopic shape and local smectic B order.. ACS Nano, 2012, 6 (5), pp.4137-46. ⟨10.1021/nn3006027⟩. ⟨hal-00846622⟩
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