In situ electrochemical scanning tunneling microscopy (EC-STM) was used to examine the zinc-terminated ZnO(0001)-Zn surface in electrolyte solution. Atomically-flat terrace-step structures were consistently observed on the surface which was prepared by chemical etching in alkaline solutions. Steps observed on the surface were composed of bilayers with a step height of 0.26 nm. Atomic images obtained by in situ EC-STM revealed that the surface has a (1 × 1) structure with hexagonal lattice.
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Inukai et al. (1999) studied this question.
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