Synthesis of open-ended, cylindrical Au-Ag alloy nanostructures on a Si/SiOx surface

Hua Zhang; Rongchao Jin; Chad A. Mirkin

doi:10.1021/nl0492281

Synthesis of open-ended, cylindrical Au-Ag alloy nanostructures on a Si/SiO_x surface

Hua Zhang, Rongchao Jin, Chad A. Mirkin^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

55 Scopus citations

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/SiO_x surface. Ag nanostructures were prepared by depositing dot MHA features on Ag-coated Si/SiO_x, 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.

Original language	English (US)
Pages (from-to)	1493-1495
Number of pages	3
Journal	Nano letters
Volume	4
Issue number	8
DOIs	https://doi.org/10.1021/nl0492281
State	Published - Aug 2004

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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title = "Synthesis of open-ended, cylindrical Au-Ag alloy nanostructures on a Si/SiOx surface",

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.",

author = "Hua Zhang and Rongchao Jin and Mirkin, {Chad A.}",

year = "2004",

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AU - Mirkin, Chad A.

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N2 - 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.

AB - 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.

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Synthesis of open-ended, cylindrical Au-Ag alloy nanostructures on a Si/SiO_x surface

Abstract

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