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Autor(en): Saccardi, Leonie
Schiebl, Jonas
Balluff, Franz
Christ, Ulrich
Gorb, Stanislav N.
Kovalev, Alexander
Schwarz, Oliver
Titel: Anti-adhesive surfaces inspired by bee mandible surfaces
Erscheinungsdatum: 2023
Dokumentart: Zeitschriftenartikel
Seiten: 13
Erschienen in: Biomimetics 8 (2023), No. 579
URI: http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-143399
http://elib.uni-stuttgart.de/handle/11682/14339
http://dx.doi.org/10.18419/opus-14320
ISSN: 2313-7673
Zusammenfassung: Propolis, a naturally sticky substance used by bees to secure their hives and protect the colony from pathogens, presents a fascinating challenge. Despite its adhesive nature, honeybees adeptly handle propolis with their mandibles. Previous research has shown a combination of an anti-adhesive fluid layer and scale-like microstructures on the inner surface of bee mandibles. Our aim was to deepen our understanding of how surface energy and microstructure influence the reduction in adhesion for challenging substances like propolis. To achieve this, we devised surfaces inspired by the intricate microstructure of bee mandibles, employing diverse techniques including roughening steel surfaces, creating lacquer structures using Bénard cells, and moulding resin surfaces with hexagonal patterns. These approaches generated patterns that mimicked the bee mandible structure to varying degrees. Subsequently, we assessed the adhesion of propolis on these bioinspired structured substrates. Our findings revealed that on rough steel and resin surfaces structured with hexagonal dimples, propolis adhesion was significantly reduced by over 40% compared to unstructured control surfaces. However, in the case of the lacquer surface patterned with Bénard cells, we did not observe a significant reduction in adhesion.
Enthalten in den Sammlungen:04 Fakultät Energie-, Verfahrens- und Biotechnik

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