The creation or patterned arrays of metallic nanostructures has numerous applications for the design and integration of plasmonic architectures into devices for chemical sensing as well as plasmon enhanced solar cells. Here we present a facile method for the controlled formation of two-dimensional periodic arrays of Au nanorings (comprised of 20 nm Au nanoparticles) on hydrophilic polymer surfaces using two-particle lithography (Au nanoparticles templated by polystyrene microspheres). In this design method, capillary force plays a critical important role in the formation of the nanostructured arrays. As such, altering experimental conditions (e.g. such as relative humidity) can dramatically influence the capillary force, and the resulting nanostructures that are assembled. By control of both Au nanoparticle concentration and the associated fabrication conditions, Au nanoring arrays could be formed presenting either nano-donuts of loosely assembly particles, or well-defined nanorings. The associated optical properties of the materials were examined by dark-field scattering and numerically simulated to obtained a detailed understanding of the resulting photonic properties.<br/>

Formation of Au nanorings array via particle lithography for applications in plasmonics

254th National Meeting (2017)

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