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Keywords:

  • Nanotubes;
  • Alignment;
  • Droplets;
  • Single-walled carbon nanotubes
Thumbnail image of graphical abstract

High aspect ratio cylindrical droplets of carbon-nanotube solutions present interesting hydrodynamic flow patterns during evaporation, where particles are aligned and positioned. The flow inside droplets with diameters <1000 nm positions all the nanotubes along the droplet centerline with 95% precision, while droplets with diameters >3µm align the nanotubes along the droplet edges during evaporation.