Biomimetic microlens array with antireflective “moth-eye” surface
2011; Royal Society of Chemistry; Volume: 7; Issue: 14 Linguagem: Inglês
10.1039/c1sm05302g
ISSN1744-6848
AutoresDoo-Hyun Ko, John R. Tumbleston, Kevin J. Henderson, Larken E. Euliss, Joseph M. DeSimone, René López, Edward T. Samulski,
Tópico(s)Advanced optical system design
ResumoWe 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 viareplica moulding enables, for example, the embossing of antireflective nanopatterns in the photoactive materials of organic solar cells.
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