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Some aspects of formation and tribological properties of silver nanodumbbells

  • Boris Polyakov*
  • , Sergei Vlassov
  • , Leonid M. Dorogin
  • , Natalia Novoselska
  • , Jelena Butikova
  • , Mikk Antsov
  • , Sven Oras
  • , Runno Lohmus
  • , Ilmar Kink
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

In this paper, metal nanodumbbells (NDs) formed by laser-induced melting of Ag nanowires (NWs) on an oxidized silicon substrate and their tribological properties are investigated. The mechanism of ND formation is proposed and illustrated with finite element method simulations. Tribological measurements consist in controllable real-time manipulation of NDs inside a scanning electron microscope (SEM) with simultaneous force registration. The geometry of NDs enables to distinguish between different types of motion, i.e. rolling, sliding and rotation. Real contact areas are calculated from the traces left after the displacement of NDs and compared to the contact areas predicted by the contact mechanics and frozen droplet models.

Original languageEnglish
Article number186
Pages (from-to)1-8
Number of pages8
JournalNanoscale Research Letters
Volume9
Issue number1
DOIs
Publication statusPublished - 2014

Keywords

  • Nanomanipulation
  • Silver nanowires
  • Tribology

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