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Electric Field Assisted Assembly of Perpendicular Oriented Nanorod Superlattices

  • Author(s): Ryan, Kevin M.
  • Mastroianni, Alex
  • Stancil, Kimani A.
  • Liu, Haitao
  • Alivisatos, Paul A.
  • et al.
Abstract

We observe the assembly of CdS nanorod superlattices by the combination of a DC electric field and solvent evaporation. In each electric field (1 V/um) assisted assembly, CdS nanorods (5 x 30 nm) suspended initially in toluene were observed to align perpendicularly to the substrate. Azimuthal alignment along the nanorod crystal faces and the presence of stacking faults indicate that both 2D and 3D assemblies were formed by a process of controlled super crystal growth.

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