Hierarchical ZnO nanostructures with blooming flowers driven by screw dislocations

Chengzi Huang, Run Shi, Abbas Amini, Zefei Wu, Shuigang Xu, Linfei Zhang, Wei Cao, Jiangwei Feng, Haisheng Song, Yantao Shi, Ning Wang, Chun Cheng

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Hierarchical ZnO nanostructures with a large yield were fabricated by a simple thermal evaporation method. For the first time, novel ZnO flowers were observed blooming at certain sites of a variety of spines, identified as Zn-terminated polar (0001) planes or tips. The spines for as-synthesized hierarchical structures can be nanowires, nanobelts, nanodendrites, nanobrushes, etc. This growth phenomenon determines the key role of polar sites in the fabrication of hierarchical structures. The spiral feature of ZnO flowers indicates an unusual screw dislocation driven growth mechanism, which is attributed to a high concentration of Zn vapor.
    Original languageEnglish
    Number of pages5
    JournalScientific Reports
    Volume5
    Issue number8226
    DOIs
    Publication statusPublished - 2015

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