Control of the ZnO nanowires nucleation site using microfluidic channels

Sang Hyun Lee, Hyun Jung Lee, Dongcheol Oh, Seog Woo Lee, Hiroki Goto, Ryan Buckmaster, Tomoyuki Yasukawa, Tomokazu Matsue, Soon Ku Hong, Hyunchui Ko, Meoung Whan Cho, Takafumi Yao

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)3856-3859
Number of pages4
JournalJournal of Physical Chemistry B
Issue number9
Publication statusPublished - 2006 Mar 9


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