Biomimetic hierarchical ZnO structure with superhydrophobic and antireflective properties

Junjie Xiong, Sachindra Nath Das, Beomki Shin, Jyoti Prakash Kar, Ji Hyuk Choi, Jae Min Myoung

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)


A two step method, with a combination of top-down and bottom-up approaches, was developed for the fabrication of ZnO based hierarchical structures with nanorods on microcraters. A layer of well c-axis aligned, transparent, conductive ZnO thin film was deposited by pulsed DC sputtering on a Corning glass substrate. The microcraters were created with anisotropic etching on the as-deposited ZnO thin film. ZnO nanorods were then synthesized onto the etched film by means of metal organic chemical vapor deposition. The resulting hierarchical film exhibits a high water contact angle (>160°) with a low contact angle hysteresis (2°) and low reflection over a wide spectral range. This biomimetic material may find potential applications in many industrial fields, e.g., self-cleaning, solar cells, displays.

Original languageEnglish
Pages (from-to)344-347
Number of pages4
JournalJournal of Colloid and Interface Science
Issue number1
Publication statusPublished - 2010 Oct

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry


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