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Guanine crystals are widely used in nature as components of multilayer reflectors. Guanine‐based reflective systems found in the copepod cuticle and in the mirror of the scallop eye are unique in that the multilayered reflectors are tiled to form a contiguous packed array. In the copepod cuticle, hexagonal crystals are closely packed to produce brilliant colors. In the scallop eye, square crystals...
Anfängliche Unordnung: Wasserfreie Guaninkristalle bilden die photonischen Bereiche, die Haut und Gräten japanischer Kois ihren Schimmer verleiht. Die Guaninkristalle bilden sich in intrazellulären Vesikeln (siehe Bild), wobei sie eine amorphe Vorläuferphase durchlaufen. Eine kombinierte Studie mit Kryo‐SEM und Synchrotron‐Röntgenbeugung zeigt im Detail den Entwicklungsverlauf der Kristalle.
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