Morphology of nanostructured films for environmental applications: Simulation of simultaneous sintering and growth

Pramod Kulkarni, Pratim Biswas

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

A sequential Brownian dynamics approach was used to establish the morphological evolution of a nanostructured particle deposit accounting for random diffusion, particle-particle and particle-surface interactions through van der Waals forces, and sintering of deposited particles. Monodisperse (30 nm radius) titanium dioxide particles were used in the simulations. A linear sintering law rate expression was used to account for the decrease in total surface area of the deposit. Characteristics such as packing thickness, total surface area, and fractal dimension are reported as a function of time during the deposition process. Sintering resulted in higher fractal dimensions (as defined) for the deposits, and elevated temperatures resulted in more compact deposits.

Original languageEnglish (US)
Pages (from-to)259-268
Number of pages10
JournalJournal of Nanoparticle Research
Volume5
Issue number3-4
DOIs
StatePublished - Aug 2003
Externally publishedYes

Keywords

  • Brownian dynamics
  • Nanostructured coatings
  • Particle deposition
  • Particle sintering
  • Titanium dioxide

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Modeling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

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