single crystals, transparent conducting oxides, amorphous
oxides including glass and silicon with its native oxide, and
metals such as gold and titanium. XRD of the seeds prior to
growth shows only a (0002) reflection, evidence of the c-axis
texturing. The resulting array, grown using zinc nitrate and
HMTA synthesis in water, has the same orientation as the
ZnO seeds (Figure 7A). An SEM cross-sectional image of
the array shows no intermediate thin film of ZnO. This
technique has been expanded to ZnO nanowire growth in
the gas phase and might also be useful in nonaqueous
solvents.