Electric-Field-Assisted Assembly of Perpendicularly Oriented Nanorod Superlattices

Electric-Field-Assisted Assembly of Perpendicularly Oriented Nanorod Superlattices

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/μm) assisted assembly, CdS nanorods (5 nm × 30 nm) suspended initially in toluene were observed to align perpendicular to the substrate. Azimuthal align...

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Bibliographic Details
Published in:Nano letters Vol. 6; no. 7; pp. 1479 - 1482
Main Authors: Ryan, Kevin M, Mastroianni, Alex, Stancil, Kimani A, Liu, Haitao, Alivisatos, A. P
Format: Journal Article
Language:English
Published: Washington, DC American Chemical Society 01-07-2006
Subjects:
Cadmium Compounds - chemistry
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
Macromolecular Substances - chemical synthesis
Materials science
Methods of crystal growth; physics of crystal growth
Microscopy, Electron, Transmission
Nanoscale materials and structures: fabrication and characterization
Nanostructures
Other topics in nanoscale materials and structures
Physics
Static Electricity
Sulfides - chemistry
Surface Properties
Toluene - chemistry
Volatilization
Crystal growth
Stacking faults
Electric field effects
Superlattices
Field evaporation
Crystal faces
Nanostructured materials
Nanorod
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Summary: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/μm) assisted assembly, CdS nanorods (5 nm × 30 nm) suspended initially in toluene were observed to align perpendicular 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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ISSN:1530-6984
1530-6992
DOI:10.1021/nl060866o