Publications

Biomimetic structural coloration with tunable degree of angle-independence generated by two-photon polymerization

Zyla, G. and Kovalev, A. and Heisterkamp, S. and Esen, C. and Gurevich, E.L. and Gorb, S. and Ostendorf, A.

OPTICAL MATERIALS EXPRESS
Volume: 9 Pages: 2630-2639
DOI: 10.1364/OME.9.002630
Published: 2019

Abstract
A successful realization of photonic systems with characteristics of the Morpho butterfly coloration is reported using two-photon polymerization. Submicron structure features have been fabricated through the interference of the incident beam and the reflected beam in a thin polymer film. Furthermore, the influence of the lateral microstructure organization on the color formation has been studied in detail. The design of the polymerized structures was validated by scanning electron microscopy. The optical properties were analyzed using an angleresolved spectrometer. Tunable angle-independence, based on reflection intensity modulation, has been investigated by using photonic structures with less degree of symmetry. Finally, these findings were used to demonstrate the high potential of two-photon polymerization in the field of biomimetic research and for technical application, e.g. for sensing and anti-counterfeiting. © 2019 Optical Society of America.

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