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Angle‐multiplexed optical printing of biomimetic hierarchical 3D textures
Author(s) -
Abid Muhammad Irfan,
Wang Lei,
Chen QiDai,
Wang XueWen,
Juodkazis Saulius,
Sun HongBo
Publication year - 2017
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201600187
Subject(s) - materials science , iridescence , lithography , fabrication , optics , wetting , multiplexing , nanotechnology , optoelectronics , computer science , physics , medicine , telecommunications , alternative medicine , pathology , composite material
Multi scale hierarchical structures underpin mechanical, optical, and wettability behavior in nature. Here we present a novel approach which can be used to mimic the natural hierarchical patterns in a quick and easy maskless fabrication. By using two‐beam interference lithography with angle‐multiplexed exposures and scanning, we have successfully printed large‐area complex structures having a cascading resolution and 3D surface profiles. By precisely controlling the exposure dose we have demonstrated a capability to create different 3D textured surfaces having comparable aspect ratio with period spanning from 4 μm to 300 nm (more than one order of magnitude) and the height spanning from 0.9 μm to 40 nm, respectively. Up to three levels of biomimetic hierarchical structures were obtained that show several natural phenomena: superhydrophobicity, iridescence, directionality of reflectivity, and polarization at different colors.