title: Three-dimensional self-assembling of gold nanorods with controlled macroscopic shape and local smectic B order.
abstract: 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.
authors.affiliation: Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université Rennes 1, Avenue du Général Leclerc, 35042 Rennes Cedex, France.
authors.forename: Cyrille
authors.initials: C
authors.lastname: Hamon
authors.forename: Marie
authors.initials: M
authors.lastname: Postic
authors.forename: Elsa
authors.initials: E
authors.lastname: Mazari
authors.forename: Thomas
authors.initials: T
authors.lastname: Bizien
authors.forename: Christophe
authors.initials: C
authors.lastname: Dupuis
authors.forename: Pascale
authors.initials: P
authors.lastname: Even-Hernandez
authors.forename: Angela
authors.initials: A
authors.lastname: Jimenez
authors.forename: Laurent
authors.initials: L
authors.lastname: Courbin
authors.forename: Charlie
authors.initials: C
authors.lastname: Gosse
authors.forename: Franck
authors.initials: F
authors.lastname: Artzner
authors.forename: Valérie
authors.initials: V
authors.lastname: Marchi-Artzner