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http://dx.doi.org/10.4191/KCERS.2008.45.4.191

High Density Silver Nanowire Arrays using Self-ordered Anodic Aluminum Oxide(AAO) Membrane  

Kim, Yong-Hyun (Department of Material Science & Engineering, Myongji University)
Han, Young-Hwan (Department of Chemical Engineering and Materials Science, University of California)
Lee, Hyung-Jik (Department of Ceramic Engineering, Kangnung National University)
Lee, Hyung-Bock (Department of Material Science & Engineering, Myongji University)
Publication Information
Journal of the Korean Ceramic Society / v.45, no.4, 2008 , pp. 191-195 More about this Journal
Abstract
Highly ordered silver nanowire with a diameter of 10 nm was arrayed by electroless deposition in a porous anodic aluminum oxide(AAO) membrane. The AAO membrane was fabricated electrochemically in an oxalic acid solution via a two-step anodization process, while growth of the silver nanowire was initiated by using electroless deposition at the long-range-ordered nanochannels of the AAO membrane followed by thermal reduction of a silver nitrate aqueous solution by increasing the temperature up to $350^{\circ}C$ for an hour. An additional electro-chemical procedure was applied after the two-step anodization to control the pore size and channel density of AAO, which enabled us to fabricate highly-ordered silver nanowire on a large scale. Electroless deposition of silver nitrate aqueous solution into the AAO membrane and thermal reduction of silver nanowires was performed by increasing the temperature up to $350^{\circ}C$ for 1 h. The morphologies of silver nanowires arrayed in the AAO membrane were investigated using SEM. The chemical composition and crystalline structure were confirmed by XRD and EDX. The electroless-deposited silver nanowires in AAO revealed a well-crystallized self-ordered array with a width of 10 nm.
Keywords
Silver nanowires; AAO(anodic aluminum oxide) membrane;
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