Directed assembly of one- and two-dimensional nanoparticle arrays from pulsed laser induced dewetting of square waveforms

Nicholas A. Roberts, Jason D. Fowlkes, Kyle Mahady, Shahriar Afkhami, Lou Kondic, Philip D. Rack

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

The directed assembly of arrayed nanoparticles is demonstrated by dictating the flow of a liquid phase filament on the nanosecond time scale. Results for the assembly of Ni nanoparticles on SiO2 are presented. Previously, we have implemented a sinusoidal perturbation on the edge of a solid phase Ni, thin film strip to tailor nanoparticle assembly. Here, a nonlinear square waveform is explored. This waveform made it possible to expand the range of nanoparticle spacing-radius combinations attainable, which is otherwise limited by the underlying Rayleigh-Plateau type of instability. Simulations of full Navier-Stokes equations based on volume of fluid method were implemented to gain further insight regarding the nature of instability mechanism leading to particle formation in experiments.

Original languageEnglish (US)
Pages (from-to)4450-4456
Number of pages7
JournalACS Applied Materials and Interfaces
Volume5
Issue number10
DOIs
StatePublished - May 22 2013

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Keywords

  • directed assembly
  • pulsed laser induced dewetting

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