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Three-Dimensional Superlattice Packing of Faceted Silver Nanocrystals

Published online by Cambridge University Press:  10 February 2011

S. A. Harfenist ,
Z. L. Wang ,
M. M. Alvarez ,
I. Vezmar  and
R. L. Whetten
S. A. Harfenist
Affiliation:
School of Physics, Georgia Institute of Technology, Atlanta, GA. 30332–0430
Z. L. Wang
Affiliation:
Schools of Physics, Chemistry, and Microelectronics Research Center, Georgia Institute of Technology, Atlanta, GA. 30332–0430
M. M. Alvarez
Affiliation:
Schools of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA. 30332–0245
I. Vezmar
Affiliation:
School of Physics, Georgia Institute of Technology, Atlanta, GA. 30332–0430
R. L. Whetten
Affiliation:
Schools of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA. 30332–0245
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Abstract

Orientational ordering of faceted nanocrystals in nanocrystal arrays has been directly observed for the first time, by use of transmission electron microscopy imaging and diffraction to resolve the structure of thin molecular-crystalline films of silver nanocrystals passivated by alkylthiolate self-assembled monolayers. The type of ordering found is determined by the nanocrystals faceted morphology, as mediated by the interactions of surfactant groups tethered to the facets on neighboring nanocrystals. Orientational ordering is crucial for the understanding of the fundamental properties of quantum-dot arrays, as well as for their optimal utilization in optical and electronic applications.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 457: Symposium V – Nanophase and Nanocomposite Materials II , 1996 , 137
Copyright
Copyright © Materials Research Society 1997

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