Session X34: Nanostructures: Assembly, Growth, and Characterization

2:30 PM–5:30 PM, Thursday, March 24, 2011
Room: C141

Sponsoring Unit: DCMP
Chair: Eric Stinaff, Ohio University

Abstract ID: BAPS.2011.MAR.X34.5

Abstract: X34.00005 : Programmable Nanofabrication of Nanoparticle Assemblies of arbitrarily Shapes on DNA Templates

3:18 PM–3:30 PM

Preview Abstract MathJax On | Off   Abstract  

Authors:

  Mauricio Pilo-Pais
    (Duke University)

  Sarah Goldberg
    (Duke University)

  Enrique Samano
    (CNyN-UNAM, Ensenada, B.C., M\'exico)

  Henok Mebrahtu
    (Duke University)

  Thomas LaBean
    (Duke University)

  Gleb Finkelstein
    (Duke University)

We present a method for producing metallic structures with nanoscale dimensions and programmable design. Rectangular ``DNA origami'' structures ($\sim $90x70nm) were modified to have uniquely coded binding sites and adsorbed onto silicon dioxide substrates. Gold nanoparticles functionalized with a complimentary DNA sequence were attached to these binding sites in a highly controllable fashion. The seed nanoparticles were then enlarged (and even fused, if desired) by a silver reduction chemistry. Using this method we constructed a variety of metallic structures, including parallel wires, H-shapes, and rings. Due to the flexibility of the design and the multiply parallel nature of the method, these structures may offer great promise for plasmonic applications.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.X34.5