Journal
SOFT MATTER
Volume 8, Issue 18, Pages 4905-4910Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2sm07319f
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Funding
- National Research Foundation of Korea (NRF) [2010-0019128]
- Center for Nanostructured Materials Technology under Ministry of Education, Science and Technology, Korea [2011K000176]
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We present a simple method for fabricating hierarchical polymeric nanohairs using a multi-branched anodic aluminum oxide (AAO) template prepared by two-step anodization and barrier layer thinning processes. Combined with nanohair yielding of a polymeric material during peeling-off from the hydrophobically modified AAO template, elongated hierarchical nanohairs with a high aspect ratio were fabricated without fiber collapse, which showed excellent adhesive and frictional properties compared to other structures such as single-level nanohairs and hierarchical nanohairs with a low aspect ratio. Furthermore, this surface showed remarkable superhydrophobic properties similar to those of natural gecko foot hairs.
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