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We report novel pattern formation using a slippery ballistic deposition (SBD) model where growth germinates from a single site or from sites distributed periodically on a lattice. By changing the sticking probability p s and choosing systems with different lattice constants and symmetries, we demonstrate that a variety of novel patterns can be generated. These patterns can be further used as scaffolds for nano-fabrication. We also demonstrate that by choosing a lateral sticking probability p l at the base which is different than p s , one can control both the early and late time morphologies originating from a seed. Furthermore, we indicate a possible generalization of preparing novel patterns to higher dimensions that in principle can have potential technological applications to prepare grooves and scaffolds of specific shapes and periodicities.

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SummaryTransmission Electron Microscopy is used as a quantitative method to measure the shapes, sizes and volumes of gold nanoparticles created at a polymeric surface by three different in situ synthesis methods. The atomic number contrast (Z-contrast) imaging technique reveals nanoparticles which are formed on the surface of the polymer. However, with certain reducing agents, the gold nanoparticles are additionally found up to 20 nm below the polymer surface. In addition, plan-view high-angle annular dark-field scanning transmission electron microscopy images were statistically analyzed on one sample to measure the volume, height and effective diameter of the gold nanoparticles and their size distributions. Depth analysis from high-angle annular dark-field scanning transmission electron microscopy micrographs also gives information on the dominant shape of the nanoparticles.

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