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Keywords:

  • Nanoparticles, metal;
  • Nanostructures, metal;
  • Self-assembly;
  • Template-free synthesis;
  • Waveguides, optical

Abstract

Short, single-particle-wide chains and complex networks of interconnected chains are easily self-assembled from 13 nm Au nanoparticles by inducing a surface electrostatic dipolar moment in a controlled manner. Mann and co-workers further demonstrate both experimentally and theoretically on p. 2553 that efficient surface plasmon coupling takes place in these extensive networks, thus opening a new bottom–up approach to subwavelength optical-waveguiding devices. The left panel in the image shows isolated 13 nm Au nanoparticles; the back panel, short linear chains; the bottom panel, complex branched network of chains; and the right panel, a graphical rendering of optical spectroscopic properties during the self-assembly process.