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

다국어 초록 (Multilingual 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 350oC 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 350oC 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 electrolessdeposited
silver nanowires in AAO revealed a well-crystallized self-ordered array with a width of 10 nm.

다국어 초록 (Multilingual 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 350oC 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 350oC 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 electrolessdeposited
silver nanowires in AAO revealed a well-crystallized self-ordered array with a width of 10 nm.

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