Journal
SOFT MATTER
Volume 7, Issue 14, Pages 6404-6407Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1sm05302g
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Funding
- NSF [DMR-0934433]
- UNC-Chapel Hill Institute for the Environment
- Kauffman Fellowship
- UNC Office of Undergraduate Research
- American Chemical Society [49187-DNI10]
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We report a replication route to non-planar, three dimensional microlens arrays with an antireflective surface nanopattern. Our methodology uses the surface topography of the Attacus atlas moth's compound eye and a soft lithographic technique to fabricate topographically faithful moulds that, in turn, are used to reproducibly replicate the original eye surface with nanoscale fidelity. In addition to antireflection, the resulting poly(urethane) replica with its moth-eye'' nanopattern also exhibits increased hydrophobicity relative to the unpatterned polymer. The materials flexibility of the perfluoropolyether mould fabricated via replica moulding enables, for example, the embossing of antireflective nanopatterns in the photoactive materials of organic solar cells.
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