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What is the most common method for single crystalline ZnO nanorod synthesis?

What is the most common method for single crystalline ZnO nanorod synthesis? Correct Answer Vapour – liquid – solid method

The vapour liquid solid (VLS) process is used to synthesize single crystalline ZnO nanorods. It involves vaporization of zinc at above 900°C to mix it with catalytic droplets in order to form alloy droplets. Reaction of the zinc vapours and a mixture of CO/CO2 at the catalyst-substrate interface is followed by nucleation and growth of ZnO nanorods.

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