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Biomimetic chiral photonic crystals.

08:00 EDT 15th April 2019 | BioPortfolio

Summary of "Biomimetic chiral photonic crystals."

Although it is well known that the amazing iridescent colors from the cuticle of beetles reflect intricate nanoscale organization of bio-fibers, artificial inorganic materials with comparable optical response have not yet been synthesized with abiotic nano-building blocks. Such materials have broad applications including circular polarizers, circularly polarized luminescence, lasers, etc. Here, we describe a general method to fabricate biomimetic chiral photonic crystals via Langmuir-Schaefer assembly of colloidal inorganic nanowires. We not only reproduce the intricate helical structure and circularly polarized color reflection in beetles, but also acquire the highest chiroptical activity with a dissymmetry factor of -1.6 among the chiral inorganic nanostructures. More importantly, beyond nature, programmable structural control based on the precise interlayer arrangement endows us an unprecedented freedom to manipulate the optical activity of as-fabricated chiral photonic crystals.

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This article was published in the following journal.

Name: Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
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