Nanocarpet effect: Pattern formation during the wetting of vertically aligned nanorod arrays

J. G. Fan, D. Dyer, G. Zhang, Y. P. Zhao

Research output: Contribution to journalArticlepeer-review

129 Scopus citations

Abstract

When a water droplet spreads on a vertically aligned nanorod surface, the nanorod array will deform into statistically percolated patterns. This nanocarpet effect has been investigated for Si nanorods. Three distinct morphologies were found: a center region due to the water droplet impact, a tilting region due to gravity, and a percolation region due to capillary invasion. The corresponding capillary forces have been estimated through finite element analysis. This effect presents a challenge for nanodevices involving liquid interactions.

Original languageEnglish
Pages (from-to)2133-2138
Number of pages6
JournalNano Letters
Volume4
Issue number11
DOIs
StatePublished - Nov 2004

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering

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