Centerline Placement and Alignment of Anisotropic Nanotubes in High Aspect Ratio Cylindrical Droplets of Nanometer Diameter

Authors

  • Richa Sharma,

    1. Department of Chemical Engineering Massachusetts Institute of Technology Cambridge, Massachusetts 02139 (USA)
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  • Michael S. Strano

    Corresponding author
    1. Department of Chemical Engineering Massachusetts Institute of Technology Cambridge, Massachusetts 02139 (USA)
    • Department of Chemical Engineering Massachusetts Institute of Technology Cambridge, Massachusetts 02139 (USA).
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Abstract

original image

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.

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