Hierarchical nanoparticle ensembles synthesized by liquid phase directed self-assembly

J. D. Fowlkes, N. A. Roberts, Y. Wu, J. A. Diez, A. G. González, C. Hartnett, K. Mahady, S. Afkhami, L. Kondic, P. D. Rack

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

A liquid metal filament supported on a dielectric substrate was directed to fragment into an ordered, mesoscale particle ensemble. Imposing an undulated surface perturbation on the filament forced the development of a single unstable mode from the otherwise disperse, multimodal Rayleigh-Plateau instability. The imposed mode paved the way for a hierarchical spatial fragmentation of the filament into particles, previously seen only at much larger scales. Ultimately, nanoparticle radius control is demonstrated using a micrometer scale switch.

Original languageEnglish (US)
Pages (from-to)774-782
Number of pages9
JournalNano Letters
Volume14
Issue number2
DOIs
StatePublished - Feb 12 2014

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Keywords

  • Rayleigh-Plateau
  • Self-assembly
  • directed assembly
  • hierarchical
  • nanoparticle assembly
  • volume-of-Fluid

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