中国物理B ›› 2009, Vol. 18 ›› Issue (5): 1942-1946.doi: 10.1088/1674-1056/18/5/036

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ZnO micro-nano composite hydrophobic film prepared bythree-step method

马恺, 李华, 张晗, 许小亮, 公茂刚, 杨周   

  1. Department of Physics, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2008-07-27 修回日期:2008-11-26 出版日期:2009-05-20 发布日期:2009-05-20
  • 基金资助:
    Project supported by the Science Fund of Anhui Province, China (Grant No 070414187) and the National Fund for Fostering Talents in Basic Science of China (Grant No J0630319/J0103).

ZnO micro-nano composite hydrophobic film prepared by the three-step method

Ma Kai(马恺), Li Hua(李华), Zhang Han(张晗), Xu Xiao-Liang(许小亮)†, Gong Mao-Gang(公茂刚), and Yang Zhou(杨周)   

  1. Department of Physics, University of Science and Technology of China, Hefei 230026, China
  • Received:2008-07-27 Revised:2008-11-26 Online:2009-05-20 Published:2009-05-20
  • Supported by:
    Project supported by the Science Fund of Anhui Province, China (Grant No 070414187) and the National Fund for Fostering Talents in Basic Science of China (Grant No J0630319/J0103).

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摘要： The hydrophobicity of the lotus leaf is mainly due to its surface micro--nano composite structure. In order to mimic the lotus structure, ZnO micro--nano composite hydrophobic films were prepared via the three-step method. On thin buffer films of SiO2, which were first fabricated on glass substrates by the sol--gel dip-coating method, a ZnO seed layer was deposited via RF magnetron sputtering. Then two different ZnO films, micro--nano and micro-only flower-like structures, were grown by the hydrothermal method. The prepared films have different hydrophobic properties after surface modification. The structures of the obtained ZnO films were characterized using x-ray diffraction and field-emission scanning electron microscopy. A conclusion that a micro--nano composite structure is more beneficial to hydrophobicity than a micro-only structure was obtained through research into the effect of structure on hydrophobic properties.

关键词: three-step method, ZnO, micro--nano structure, hydrophobic film

Abstract: The hydrophobicity of the lotus leaf is mainly due to its surface micro--nano composite structure. In order to mimic the lotus structure, ZnO micro--nano composite hydrophobic films were prepared via the three-step method. On thin buffer films of SiO2, which were first fabricated on glass substrates by the sol--gel dip-coating method, a ZnO seed layer was deposited via RF magnetron sputtering. Then two different ZnO films, micro--nano and micro-only flower-like structures, were grown by the hydrothermal method. The prepared films have different hydrophobic properties after surface modification. The structures of the obtained ZnO films were characterized using x-ray diffraction and field-emission scanning electron microscopy. A conclusion that a micro--nano composite structure is more beneficial to hydrophobicity than a micro-only structure was obtained through research into the effect of structure on hydrophobic properties.

Key words: three-step method, ZnO, micro--nano structure, hydrophobic film

中图分类号:  (Methods of micro- and nanofabrication and processing)

  • 81.16.-c
81.05.Dz (II-VI semiconductors) 68.55.A- (Nucleation and growth) 81.20.Fw (Sol-gel processing, precipitation) 81.15.Cd (Deposition by sputtering) 81.07.Bc (Nanocrystalline materials)