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Synthesis of gold nanowires with controlled crystallographic characteristics

Karim, Shafqat and Toimil-Molares, Maria E. and Maurer, Florian and Miehe, Gerhard and Ensinger, Wolfgang and Liu, J. and Cornelius, Thomas W. and Neumann, Reinhard (2006):
Synthesis of gold nanowires with controlled crystallographic characteristics.
In: Applied Physics A, Springer, pp. 403-407, 84, (4), ISSN 0947-8396,
[Article]

Abstract

The controlled fabrication of poly- and single-crystalline Au nanowires is reported. In polycarbonate templates, prepared by heavy-ion irradiation and subsequent etching, Au nanowires with diameters down to 25 nm are electrochemically synthesized. Four-circle X-ray diffraction and transmission electron microscopy measurements demonstrate that wires deposited potentiostatically at a voltage of -1.2 V at 65 °C are single-crystalline and oriented along the [110] direction. By reverse-pulse electrodeposition, wires oriented along the [100] direction are grown. The wires are cylindrical over their whole length. The morphology of the caps growing on top of poly- and single-crystalline wires is a strong indication of the particular crystalline structure of the nanowires.

Item Type: Article
Erschienen: 2006
Creators: Karim, Shafqat and Toimil-Molares, Maria E. and Maurer, Florian and Miehe, Gerhard and Ensinger, Wolfgang and Liu, J. and Cornelius, Thomas W. and Neumann, Reinhard
Title: Synthesis of gold nanowires with controlled crystallographic characteristics
Language: English
Abstract:

The controlled fabrication of poly- and single-crystalline Au nanowires is reported. In polycarbonate templates, prepared by heavy-ion irradiation and subsequent etching, Au nanowires with diameters down to 25 nm are electrochemically synthesized. Four-circle X-ray diffraction and transmission electron microscopy measurements demonstrate that wires deposited potentiostatically at a voltage of -1.2 V at 65 °C are single-crystalline and oriented along the [110] direction. By reverse-pulse electrodeposition, wires oriented along the [100] direction are grown. The wires are cylindrical over their whole length. The morphology of the caps growing on top of poly- and single-crystalline wires is a strong indication of the particular crystalline structure of the nanowires.

Journal or Publication Title: Applied Physics A
Volume: 84
Number: 4
Publisher: Springer
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Material Analytics
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 20 Nov 2008 08:26
Funders: One of the authors (S.K.) expresses his gratitude to the Higher Education Commission, Pakistan, for providing a scholarship.
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