AVS 52nd International Symposium
    Nanometer-Scale Science and Technology Tuesday Sessions
       Session NS-TuP

Paper NS-TuP24
Controlled Gold Nanowires using 2-Aminoethanthiol Capped Gold Nanoparticles on DNA Molecule as Template

Tuesday, November 1, 2005, 4:00 pm, Room Exhibit Hall C&D

Session: Nanometer Scale Science and Technology Poster Session
Presenter: H. Kim, Sungkyunkwan University, Korea
Authors: H. Kim, Sungkyunkwan University, Korea
B. Hong, Sungkyunkwan University, Korea
Y.-H. Roh, Sungkyunkwan University, Korea
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We developed a simple technique to form Au-nanowires (AuNWs) by the conjugation of 2-aminoethanthio-capped gold nanoparticles (AET-AuNPs) and the immobilized DNA molecules on 3-Aminopropyltriethoxysilane (APS) coated Si wafers. The AuNPs coated with AET monolayers have been electrostatically assembled along DNA molecules by careful control of the relative molar quantities of AuNPs and AET. We carried out a variety of AuNPs sizes (2, 5, 10 nm) to form the various nanowires, and the various sizes of nanowires were achieved. The gold nanowires formed in this study were confirmed by atomic force microscopy (AFM). In addition, we measured an electrical conductivity of AuNWs located between microfabricated electrodes. The investigated nanowires exhibit ohmic transport behavior at room temperature.