Abstract
Ar1000+ clusters accelerated by a voltage in the range of 10–15 kV were used to fabricate self-assembled nanoripples on the surface of ZnO needles. The influence of the cluster accelerating voltage and the lateral size of the needles on the ripple formation were studied. The nanoripples formed on a large surface of a needle resemble eolian sand ripples, whereas, those formed on the needle edges or thin needles demonstrate well-ordered ribbed structures.
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