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J. Korean Ceram. Soc. > Volume 45(4); 2008 > Article
Journal of the Korean Ceramic Society 2008;45(4): 191.
doi: https://doi.org/10.4191/kcers.2008.45.4.191
High Density Silver Nanowire Arrays using Self-ordered Anodic Aluminum Oxide(AAO) Membrane
Yong-Hyun Kim, Young-Hwan Han1, Hyung-Jik Lee2, Hyung-Bock Lee
Department of Material Science & Engineering, Myongji University
1Department of Chemical Engineering and Materials Science, University of California
2Department of Ceramic Engineering, Kangnung National University
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.
Key words: Silver nanowires, AAO(anodic aluminum oxide) membrane
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