Die Ermittlung von radialen Verteilungsfunktionen aus dem Beugungsbild zweidimensionaler amorpher Strukturen

Becherer, G.; Herms, G.; Ahrenholz, P.

doi:10.1002/andp.19664720308

Cited by 1 publication

(1 citation statement)

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“…They are required for the determination of the interparticle distances by calculating the corresponding radial distribution function given by italicg ( r ) = italicN ( r ) / ( 2 π r Δ r ρ ) where N ( r ) is the number of particles in an annular disc of radii r and r + Δ r drawn with a particle at the center and ρ is the number of particles per cm 2 . Details of the calculation method have been reported elsewhere. − In Figure a the radial distribution functions of the prepared quasi-hexagonally ordered gold nanoparticle arrays (shown in Figure ) and the theoretical radial distribution function of a perfect hexagonal lattice are displayed. The peak positions of the array coincide with the predicted peak positions for a perfect hexagonal lattice.…”

Section: Resultsmentioning

confidence: 99%

Plasmon Coupling in Self-Assembled Gold Nanoparticle-Based Honeycomb Islands

et al. 2013

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Metallic nanostructures that sustain plasmonic resonances are indispensable ingredients for many functional devices. Whereas structures fabricated with top-down methods entail the advantage of a nearly unlimited control over all plasmonic properties, they are in most cases unsuitable for a low cost fabrication on large surfaces; and eventually a truly nanometric size domain is difficult to reach due to limitations in the fabrication resolution. Although ordinary bottom-up techniques based on colloidal nanolithography promise to lift these limitations, they often suffer from their incapability to self-assemble nanoparticles at large surfaces and at a density necessary to observe effects that strongly deviate from those of isolated nanoparticles. Here, we rely on the application of sequential bottom-up fabrication steps to realize honeycomb structures from gold nanoparticles that show strong extinction bands in the near-infrared. The extraordinary properties are only facilitated by densely packing the nanoparticles into clusters with a finite size; causing the clusters to act as plasmonic macromolecules. These strongly interacting bottom-up materials with a deterministic geometry but fabricated by self-assembly might be of use in future sensing applications and in material platforms to mediate strong light−matter-interactions.

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