Journal
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
Volume 31, Issue 2, Pages 266-273Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppsc.201300256
Keywords
gold; nanosphere; size control; shape control
Funding
- NSF [DMR-1215034]
- Georgia Institute of Technology
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1215034] Funding Source: National Science Foundation
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A simple and robust route is described to the synthesis of single-crystal Au nanospheres with diameters controlled in the range of 5 nm to 150 nm. The success of this synthesis relies on the use of single-crystal Au spheres with different diameters as the seeds for successive growth and the use of a slow injection rate for the precursor to enable surface diffusion for the atoms added onto the surface of a seed. The diameters could be precisely controlled by varying the size and/or number of the seeds. The products exhibit excellent uniformity in terms of both size and shape and they are expected to find widespread use in a number of applications, including self-assembly, fabrication of metallodielectric photonic crystals, plasmonics, and biomedical research.
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