Connecting the Nanodots: Programmable Nanofabrication of Fused Metal Shapes on DNA Templates

We present a novel method for producing complex metallic nanostructures of programmable design. DNA origami templates, modified to have DNA binding sites with a uniquely coded sequence, were adsorbed onto silicon dioxide substrates. Gold nanoparticles functionalized with the cDNA sequence were then...

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Bibliographic Details
Published in:Nano letters 2011-08, Vol.11 (8), p.3489-3492
Main Authors: Pilo-Pais, M, Goldberg, S, Samano, E, LaBean, T. H, Finkelstein, G
Format: Article
Language:English
Subjects:
Bars
Binding sites
Chemical synthesis methods
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Deoxyribonucleic acid
DNA - chemistry
Electroless deposition
Exact sciences and technology
Expansion
Gold - chemistry
Joining
Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties
Materials science
Metal Nanoparticles
Methods of nanofabrication
Nanocrystalline materials
Nanoparticles
Nanoscale materials and structures: fabrication and characterization
Nanostructure
Physics
Silicon substrates
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Templates, Genetic
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Summary:We present a novel method for producing complex metallic nanostructures of programmable design. DNA origami templates, modified to have DNA binding sites with a uniquely coded sequence, were adsorbed onto silicon dioxide substrates. Gold nanoparticles functionalized with the cDNA sequence were then attached. These seed nanoparticles were later enlarged, and even fused, by electroless deposition of silver. Using this method, we constructed a variety of metallic structures, including rings, pairs of bars, and H shapes.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl202066c