Field emission and superhydrophobic properties of electrochemically grown gold nanourchins

Ting Kai Huang, Hsin Wei Huang, Chi Young Lee, Hsin-Tien Chiu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


We demonstrate a convenient fabrication of Au nanourchins (NUs) on Si substrates via a surfactant-assisted galvanic reduction process. This synthetic method not only grows Au NUs on Si in a one-step process but also effectively controls the lengths of the branches on the NUs. The widths are about 100-120 nm and the lengths can be extended from 200 nm to 5 μm by lengthening the growth time.With the advantage of a hierarchical surface structure, Au NUs exhibited excellent electron field emission (FE) performance (turn-on voltage, 6.3 V/μm; β, 1150). In addition, the wetting behavior examination shows that the water contact angle can be as high as 158° on Au NUs after the material is treated by 1-hexadecanethiol.

Original languageEnglish
Pages (from-to)983-988
Number of pages6
JournalJournal of the Chinese Chemical Society
Issue number8
StatePublished - 1 Aug 2012


  • Electron field emission
  • Galvanic reduction
  • Gold
  • Nanourchin
  • Superhydrophobicity

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