Guanine-Based Photonic Crystals in Fish Scales Form from an Amorphous Precursor

Guanine-Based Photonic Crystals in Fish Scales Form from an Amorphous Precursor

Starting from disorder: Anhydrous guanine crystals compose the photonic arrays responsible for the skin and scale iridescence found in Japanese Koi fish. These guanine crystals were found to form in intracellular vesicles (see picture) through an amorphous precursor phase. A combined cryo‐SEM and sy...

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Veröffentlicht in:Angewandte Chemie International Edition 2013-01, Vol.52 (1), p.388-391
Hauptverfasser: Gur, Dvir, Politi, Yael, Sivan, Berta, Fratzl, Peter, Weiner, Steve, Addadi, Lia
Format: Artikel
Sprache:eng
Schlagworte:
amorphous materials
Animals
Arrays
biogenic guanine crystals
Carps
Crystallization
Crystals
Diffraction
Evolution
Fish
Guanine - chemistry
Guanines
Integumentary System
photonic crystals
Photons
Precursors
structural colors
Vesicles
X-Ray Diffraction
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Beschreibung
Zusammenfassung:Starting from disorder: Anhydrous guanine crystals compose the photonic arrays responsible for the skin and scale iridescence found in Japanese Koi fish. These guanine crystals were found to form in intracellular vesicles (see picture) through an amorphous precursor phase. A combined cryo‐SEM and synchrotron radiation X‐ray diffraction study showed the evolution of the crystals in great detail.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201205336