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Nanorods anisotropic synthesis

Electric-field-directed growth of gold nanorods in aqueous surfactant solutions. Advanced Functional Materials, 14, 571-579 (d) Jana, N.R. (2005) Gram-scale synthesis of soluble, near-monodisperse gold nanorods and other anisotropic nanoparticles. Small,... [Pg.347]

Dozens of methods to synthesize nanotubes, nanowires, and nanorods have been reported that can be found in the references included in Table 1. In addition to the most well known ones, such as hot plasmas, laser ablation, chemical vapor deposition, high temperature solid state and hydrothermal synthesis, fill-ing/coating of carbon nanotubes and similar types of materials, three methods have been developed that enable the synthesis of a wealth of new anisotropic nanoparticles. [Pg.151]

An emerging direction in nanomaterials research concerns the synthesis of multifunctional nanocrystals [62]. Seeded growth [63] of a second material on already preformed nanocrystals has given access to nano-objects associating discrete, nonconcentric, and chemically different domains. Anisotropic nanocrystals due to their distinct reactivity along different facets offer the possibility to position the second domain on a specific facet [64]. Using as seeds cobalt nanorods we have... [Pg.432]

In this chapter, we intend to introduce to the reader some of the most popular preparation methods of noble metal colloids, but do not intend by any means to thoroughly review the scientific literature on metal colloid synthesis. We have chosen examples of synthesis in aqueous and organic solvents, and differentiate between spherical and anisotropic nanoparticles (nanorods and nanoprisms). Additionally, in section 3 we shall describe one of the most popular recent procedures to assemble metal colloids into nanostructured materials (layer-by-layer assembly), as well as the properties of the resulting structures. [Pg.2]

Some work has also been recently carried out on the solution synthesis of bimetallic nanorods, employing gold nanorods as preformed cores. Jang and co-workers synthesized Au Ag core-shell nanorods using the electrochemical method to obtain the gold nanorods and the seed-mediated mechanism to get the desired core-shell structure. The combination of the different optical resonances from the core and the shell metals leads to a quite spectacular optical spectrum from these composite, anisotropic nanoparticles. [Pg.10]

Unlike zirconia nanoparticle synthesis, the preparation of anisotropic zirconia nanomaterials has been rarely reported, with the preparation of nanoparticles with a rice- or fiber-hke morphology having been achieved in solution-based processes, and the underlying mechanisms not yet understood. Template-based processes, both in solution and in gas phase, have however been successfully employed to prepare nanorods and nanotubes, using common polymer-based membranes and anodic alumina as templates. [Pg.274]

As in the case of the LC polymer mentioned above, Riou et al. used anisotropic ferromagnetic NPs (Riou et al. 2012) in order to achieve a strong orientational coupling between magnetic nanoparticles and the liquid crystal medium and maximize the torque induced by the applied magnetic field on the medium. They described the synthesis of a LCE and showed the potential for this new kind of material. In order to obtain the desired magneto-responsive character, the synthesis of monodomain samples, where Co nanorods were oriented parallel to the nematic vector, must be further developed. [Pg.519]


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