Journal
SCIENCE ADVANCES
Volume 2, Issue 5, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.1600084
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Funding
- Australian Research Council Centre for Ultrahigh-bandwidth Devices for Optical Systems [CE110001018]
- Laureate Fellowship scheme [FL100100099]
- Science and Industry Endowment Fund under the John Stocker Postdoctoral Fellowship [PF14-100]
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Using optical two-beam lithography with improved resolution and enhanced mechanical strength, we demonstrate the replication of gyroid photonic nanostructures found in the butterfly Callophrys rubi. These artificial structures are shown to have size, controllability, and uniformity that are superior to those of their biological counterparts. In particular, the elastic Young's modulus of fabricated nanowires is enhanced by up to 20%. As such, the circular dichroism enabled by the gyroid nanostructures can operate in the near-ultraviolet wavelength region, shorter than that supported by the natural butterfly wings of C. rubi. This fabrication technique provides a unique tool for extracting three-dimensional photonic designs from nature and will aid the investigation of biomimetic nanostructures.
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