Journal of Crystal Growth 310 n n

neer for d by e 19 An alternative method for site-selective growth of ZnO nanowires without the use of an Au catalyst or a ZnO thin-film seed layer is Zinc oxide (ZnO) nanowires have attracted extensive techniques that allow these nanowires to be grown at specific locations on a substrate. Currently, most of the reported work on such selective growth on substrates patterned growth of the ZnO nanowires [4,7–10]. Never-use of an Au metal catalyst. Both the thermal-evaporation and condensation VS growth and the solution-based technique of nanowire growth avoid the use of Au catalyst. ARTICLE IN PRESSHowever, it is widely known that these techniques provide less control over the spatial location for nanowire growth [4]. Recently, Conley et al. and Cross et al. demonstrate