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Updated: Mar 10, 2026

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
Published on: September 28, 2016
Orientationally Ordered Silicon Nanocrystal Cuboctahedra in Superlattices
Yixuan Yu1, Xiaotang Lu1, Adrien Guillaussier1
1McKetta Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin , Austin, Texas 78712-1062, United States.
Abstract:
Uniform silicon nanocrystals were synthesized with cuboctahedral shape and passivated with 1-dodecene capping ligands. Transmission electron microscopy, electron diffraction, and grazing incidence wide-angle and small-angle X-ray scattering show that these soft cuboctahedra assemble into face-centered cubic superlattices with orientational order. The preferred nanocrystal orientation was found to depend on the orientation of the superlattices on the substrate, indicating that the interactions with the substrate and assembly kinetics can influence the orientation of faceted nanocrystals in superlattices.
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