Journal
NANO LETTERS
Volume 13, Issue 12, Pages 6084-6090Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl4033654
Keywords
Self-assembly; DNA; nanoparticles; plasmonics; epitaxy
Categories
Funding
- Bioprogrammable One-, Two-, and Three-Dimensional Materials [FA9550-11-1-0275 MURI]
- AFOSR [FA9550-12-1-0280]
- DOE through the NU Non-Equilibrium Research Center [611-8289300-60024682-01]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
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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.
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