Epitaxial Growth of DNA-Assembled Nanoparticle Superlattices on Patterned Substrates

TitleEpitaxial Growth of DNA-Assembled Nanoparticle Superlattices on Patterned Substrates
Publication TypeJournal Article
Year of Publication2013
AuthorsHellstrom, SL, Kim, Y, Fakonas, JS, Senesi, AJ, Macfarlane, RJ, Mirkin, CA, Atwater, HA
JournalNano Letters
Volume13
Issue12
Pagination6084 - 6090
Date Published2013/12//
ISBN Number1530-6984
Abstract

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.