Metallic nanowires and mesoscopic networks on a free surface of superfluid helium and charge-shuttling across the liquid-gas interface

P. Moroshkin*, R. Batulin, P. Leiderer, Kimitoshi Kono

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

We investigate the motion of electrically charged metallic nano- and microparticles produced by laser ablation in He gas and injected into superfluid helium. In the presence of a vertical static electric field, the particles either perform a repetitive shuttle-like motion transporting the charge across the liquid-gas interface or become trapped under the free surface of liquid He and coalesce into long filaments and complex two-dimensional mesoscopic networks. A classical electrohydrodynamic model is used to describe the motion of charged microparticles in superfluid He. The resulting filaments and networks are analyzed using electron microscopy. It is demonstrated that each filament is in fact composed of a large number of nanowires with a characteristic diameter of order of 10 nm and extremely large aspect ratios.

Original languageEnglish
Pages (from-to)26444-26455
Number of pages12
JournalPhysical Chemistry Chemical Physics
Volume18
Issue number38
DOIs
StatePublished - 14 Oct 2016

Keywords

  • CONDUCTING PARTICLES
  • QUANTIZED VORTICES
  • ELECTRIC-FIELDS
  • LASER-ABLATION
  • BEHAVIOR
  • GOLD
  • COALESCENCE
  • STABILITY
  • SILVER

Cite this