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  • Insect Analogue to the Lotus Leaf: A Planthopper Wing Membrane Incorporating a Low-Adhesion, Nonwetting, Superhydrophobic, Bactericidal, and Biocompatible Surface

    Author(s)
    Watson, Gregory S
    Green, David W
    Cribb, Bronwen W
    Brown, Christopher L
    Meritt, Christopher R
    Tobin, Mark J
    Vongsvivut, Jitraporn
    Sun, Mingxia
    Liang, Ai-Ping
    Watson, Jolanta A
    Griffith University Author(s)
    Brown, Chris L.
    Merritt, Chris
    Watson, Gregory S.
    Watson, Jolanta A.
    Year published
    2017
    Metadata
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    Abstract
    Nature has produced many intriguing and spectacular surfaces at the micro- and nanoscales. These small surface decorations act for a singular or, in most cases, a range of functions. The minute landscape found on the lotus leaf is one such example, displaying antiwetting behavior and low adhesion with foreign particulate matter. Indeed the lotus leaf has often been considered the “benchmark” for such properties. One could expect that there are animal counterparts of this self-drying and self-cleaning surface system. In this study, we show that the planthopper insect wing (Desudaba danae) exhibits a remarkable architectural ...
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    Nature has produced many intriguing and spectacular surfaces at the micro- and nanoscales. These small surface decorations act for a singular or, in most cases, a range of functions. The minute landscape found on the lotus leaf is one such example, displaying antiwetting behavior and low adhesion with foreign particulate matter. Indeed the lotus leaf has often been considered the “benchmark” for such properties. One could expect that there are animal counterparts of this self-drying and self-cleaning surface system. In this study, we show that the planthopper insect wing (Desudaba danae) exhibits a remarkable architectural similarity to the lotus leaf surface. Not only does the wing demonstrate a topographical likeness, but some surface properties are also expressed, such as nonwetting behavior and low adhering forces with contaminants. In addition, the insect-wing cuticle exhibits an antibacterial property in which Gram-negative bacteria (Porphyromonas gingivalis) are killed over many consecutive waves of attacks over 7 days. In contrast, eukaryote cell associations, upon contact with the insect membrane, lead to a formation of integrated cell sheets (e.g., among human stem cells (SHED-MSC) and human dermal fibroblasts (HDF)). The multifunctional features of the insect membrane provide a potential natural template for man-made applications in which specific control of liquid, solid, and biological contacts is desired and required. Moreover, the planthopper wing cuticle provides a “new” natural surface with which numerous interfacial properties can be explored for a range of comparative studies with both natural and man-made materials.
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    Journal Title
    ACS Applied Materials and Interfaces
    Volume
    9
    Issue
    28
    DOI
    https://doi.org/10.1021/acsami.7b08368
    Subject
    Chemical sciences
    Macromolecular and materials chemistry not elsewhere classified
    Engineering
    Publication URI
    http://hdl.handle.net/10072/346330
    Collection
    • Journal articles

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