Synthesis of Open-ended, Cylindrical Au-Ag Alloy Nanostructures on a Si/SiOx Surface

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)1493-1495
Journal / PublicationNano Letters
Volume4
Issue number8
Online published7 Jul 2004
Publication statusPublished - Aug 2004
Externally publishedYes

Abstract

Dip-pen nanolithography (OPN) in conjunction with wet chemical etching was used to synthesize a new class of open-ended, cylindrical Au-Ag alloy nanostructures on a Si/SiOx surface. Ag nanostructures were prepared by depositing dot MHA features on Ag-coated Si/SiOx, followed by etching with ferri/ferrocyanide solution. When these Ag nanostructures are reacted with HAuCl4, electroless plating of Au occurs on the sidewalls of the silver features along with concomitant oxidation of the Ag. This results in the formation of novel open-ended, cylindrical Au-Ag alloy nanostructures. Insight into the mechanism for this process is provided. © 2004 American Chemical Society

Citation Format(s)

Synthesis of Open-ended, Cylindrical Au-Ag Alloy Nanostructures on a Si/SiOx Surface. / Zhang, Hua; Jin, Rongchao; Mirkin, Chad A.

In: Nano Letters, Vol. 4, No. 8, 08.2004, p. 1493-1495.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review