Control of the ZnO nanowires nucleation site using microfluidic channels.
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.
Lee
Sang Hyun
SH
Center for Interdisciplinary Research, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan. shlee@cir.tohoku.ac.jp
Lee
Hyun Jung
HJ
Oh
Dongcheol
D
Lee
Seog Woo
SW
Goto
Hiroki
H
Buckmaster
Ryan
R
Yasukawa
Tomoyuki
T
Matsue
Tomokazu
T
Hong
Soon-Ku
SK
Ko
HyunChul
H
Cho
Meoung-Whan
MW
Yao
Takafumi
T