Control of the ZnO nanowires nucleation site using microfluidic channels |
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Authors: | Lee Sang Hyun Lee Hyun Jung Oh Dongcheol Lee Seog Woo Goto Hiroki Buckmaster Ryan Yasukawa Tomoyuki Matsue Tomokazu Hong Soon-Ku Ko HyunChul Cho Meoung-Whan Yao Takafumi |
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Affiliation: | Center for Interdisciplinary Research, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan. shlee@cir.tohoku.ac.jp |
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Abstract: | We report on the growth of uniquely shaped ZnO nanowires with high surface area and patterned over large areas by using a poly(dimethylsiloxane) (PDMS) microfluidic channel technique. The synthesis uses first a patterned seed template fabricated by zinc acetate solution flowing though a microfluidic channel and then growth of ZnO nanowire at the seed using thermal chemical vapor deposition on a silicon substrate. Variations the ZnO nanowire by seed pattern formed within the microfluidic channel were also observed for different substrates and concentrations of the zinc acetate solution. The photocurrent properties of the patterned ZnO nanowires with high surface area, due to their unique shape, were also investigated. These specialized shapes and patterning technique increase the possibility of realizing one-dimensional nanostructure devices such as sensors and optoelectric devices. |
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