Three-helix bundle DNA tiles self-assemble into 2D lattice or 1D templates for silver nanowires

Sung Ha Park, Robert Barish, Hanying Li, John H. Reif, Gleb Finkelstein, Hao Yan, Thomas H. LaBean

Research output: Contribution to journalArticle

173 Citations (Scopus)

Abstract

We present a DNA nanostructure, the three-helix bundle (3HB), which consists of three double helical DNA domains connected by six immobile crossover junctions such that the helix axes are not coplanar. The 3HB motif presents a triangular cross-section with one helix lying in the groove formed by the other two. By differential programming of sticky-ends, 3HB tiles can be arrayed in two distinct lattice conformations: one-dimensional filaments and two-dimensional lattices. Filaments and lattices have been visualized by high-resolution, tapping mode atomic force microscopy (AFM) under buffer. Their dimensions are shown to be in excellent agreement with designed structures. We also demonstrate an electroless chemical deposition for fabricating metallic nanowires templated on self-assembled filaments. The metallized nanowires have diameters down to 20 nm and display Ohmic current-voltage characteristic.

Original languageEnglish
Pages (from-to)693-696
Number of pages4
JournalNano Letters
Volume5
Issue number4
DOIs
Publication statusPublished - Apr 2005

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tiles
Tile
Silver
helices
bundles
Nanowires
filaments
DNA
nanowires
templates
deoxyribonucleic acid
silver
Current voltage characteristics
Conformations
Atomic force microscopy
Nanostructures
Buffers
programming
grooves
crossovers

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Chemistry (miscellaneous)

Cite this

Park, S. H., Barish, R., Li, H., Reif, J. H., Finkelstein, G., Yan, H., & LaBean, T. H. (2005). Three-helix bundle DNA tiles self-assemble into 2D lattice or 1D templates for silver nanowires. Nano Letters, 5(4), 693-696. https://doi.org/10.1021/nl050108i

Three-helix bundle DNA tiles self-assemble into 2D lattice or 1D templates for silver nanowires. / Park, Sung Ha; Barish, Robert; Li, Hanying; Reif, John H.; Finkelstein, Gleb; Yan, Hao; LaBean, Thomas H.

In: Nano Letters, Vol. 5, No. 4, 04.2005, p. 693-696.

Research output: Contribution to journalArticle

Park, SH, Barish, R, Li, H, Reif, JH, Finkelstein, G, Yan, H & LaBean, TH 2005, 'Three-helix bundle DNA tiles self-assemble into 2D lattice or 1D templates for silver nanowires', Nano Letters, vol. 5, no. 4, pp. 693-696. https://doi.org/10.1021/nl050108i
Park, Sung Ha ; Barish, Robert ; Li, Hanying ; Reif, John H. ; Finkelstein, Gleb ; Yan, Hao ; LaBean, Thomas H. / Three-helix bundle DNA tiles self-assemble into 2D lattice or 1D templates for silver nanowires. In: Nano Letters. 2005 ; Vol. 5, No. 4. pp. 693-696.
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