Epitaxial growth of DNA-assembled nanoparticle superlattices on patterned substrates

Sondra L. Hellstrom*, Youngeun Kim, James S. Fakonas, Andrew J. Senesi, Robert J. Macfarlane, Chad A. Mirkin, Harry A. Atwater

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)6084-6090
Number of pages7
JournalNano letters
Volume13
Issue number12
DOIs
StatePublished - Dec 11 2013

Keywords

  • DNA
  • Self-assembly
  • epitaxy
  • nanoparticles
  • plasmonics

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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