Epitaxial Growth of DNA-Assembled Nanoparticle Superlattices on Patterned Substrates
| Autor: | James S. Fakonas, Harry A. Atwater, Robert J. Macfarlane, Chad A. Mirkin, Andrew J. Senesi, Youngeun Kim, Sondra L. Hellstrom |
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| Rok vydání: | 2013 |
| Předmět: |
Optics and Photonics
Plasmonic nanoparticles Nanostructure Materials science Mechanical Engineering Superlattice Metal Nanoparticles Nanoparticle Bioengineering Nanotechnology DNA General Chemistry Condensed Matter Physics Nanostructures Template General Materials Science Grain boundary Gold Self-assembly Plasmon |
| Zdroj: | Nano Letters. 13:6084-6090 |
| ISSN: | 1530-6992 1530-6984 |
| DOI: | 10.1021/nl4033654 |
| Popis: | DNA-functionalized nanoparticles, including plasmonic nanoparticles, can be assembled into a wide range of crystalline arrays via synthetically programmable DNA hybridization interactions. Here we demonstrate that such assemblies can be grown epitaxially on lithographically patterned templates, eliminating grain boundaries and enabling fine control over orientation and size of assemblies up to thousands of square micrometers. We also demonstrate that this epitaxial growth allows for orientational control, systematic introduction of strain, and designed defects, which extend the range of structures that can be made using superlattice assembly. Ultimately, this will open the door to integrating self-assembled plasmonic nanoparticle materials into on-chip optical or optoelectronic platforms. |
| Databáze: | OpenAIRE |
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