Aligned ultralong ZnO nanobelts and their enhanced field emission

Wenzhong Wang, Baoqing Zeng, Jian Yang, Bed Poudel, Jianyu Huang, Michael J. Naughton, Zhifeng Ren

Research output: Contribution to journalArticle

269 Scopus citations

Abstract

A new technique for the growth of aligned ultralong ZnO nanobelts on metal substrates in a one-step process via molten-salt-assisted template-free thermal evaporation was analyzed. These ultralong nanobelts show enhanced field emission, the as-grown ZnO nanobelts on the Au substrates indicates that the nanobelts can grow to several millimeters in length. The ZnO nanobelts were found to be transparent by using a top-view optical microscope. A higher-magnification optical microscopy image of the side-view indicates nominal, though imperfect alignment. Field-emission scanning electron microscopy images show the as-grown ZnO nanobelts under different magnifications. The new approach was designed by combining a general molten-salt process which is usually used to prepare micrometer-scale ceramic powders. The main point of this new approach was the evaporation of Zn metal powder in a liquid environment of molten sodium chloride salt.

Original languageEnglish (US)
Pages (from-to)3275-3278
Number of pages4
JournalAdvanced Materials
Volume18
Issue number24
DOIs
StatePublished - Dec 18 2006

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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