Bio-inspired iridescent layer-by-layer assembled cellulose nanocrystal Bragg stacks

Layer-by-layer (LbL) assembly was used to fabricate a synthetic analogue of the color producing multilayered structure commonly found in many biological systems, particularly Coleoptera. The resulting iridescent films comprise multiple LbL-deposited layers designed to control color appearance throug...

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Published inJournal of materials chemistry. C, Materials for optical and electronic devices Vol. 3; no. 17; pp. 4260 - 4264
Main Authors Tzeng, P., Hewson, D. J., Vukusic, P., Eichhorn, S. J., Grunlan, J. C.
Format Journal Article
LanguageEnglish
Published 01.01.2015
Subjects
Assembly
Beetles
Coleoptera
Color
Multilayers
Nanocrystals
Stacks
Wavelengths
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Summary:Layer-by-layer (LbL) assembly was used to fabricate a synthetic analogue of the color producing multilayered structure commonly found in many biological systems, particularly Coleoptera. The resulting iridescent films comprise multiple LbL-deposited layers designed to control color appearance through the materials' refractive indices and individual multilayer layer thicknesses. The fabricated systems, referred to as Bragg stacks, exhibited very similar optical behavior to the model and the beetle, selectively reflecting the desired color in a narrow band of visible wavelengths and displaying iridescent behavior.
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ISSN:2050-7526
2050-7534
DOI:10.1039/C5TC00590F