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Two of the most sought after physical properties among biological surface systems are decontamination and antibiofouling 15, which are conducive to human cell attachment 2.
Tcp gecko download skin#
Many epithelial surface structures have technological potential across biomedicine, including drug-delivering skin plasters 12, subcutaneous tissue tapes 13 and gene transfer devices 14, as well as an influence over stem cell differentiation, biosensing platforms, lab-on-chip templates and organoid induction. Some of the most significant surface solutions can be transferred from nature to technology, to address important interfacial challenges, such as, anti-wetting (e.g., gecko lizard skins) 2, self-cleaning 3, antireflection 4, omniphobicity 5, 6 (e.g., springtail cuticles), icephobicity 7 and wet and dry reversible adhesion 8, 9, 10, 11. Fascinatingly, most evolutionary adaptations have had no analogue in technology (until they are discovered in nature) and they frequently have a superior performance to even the best human innovations. In some cases, these surface regions are hierarchical in structure and are often new to science and technology. There are many surface regions of animals and plants with embellishments for complex functions that allow for successful interactions with the physical world 1. We envision testing the biocidal properties of the well-matched templates for fungal spores and viral resistance in biomedicine as well as co/multi-cultures. Such synthetic gecko skin surfaces are excellent platforms to test for bacterial control in clinical settings. Despite some small differences, the synthetic gecko skin surface resisted wetting and bacterial contamination at the same level as natural shed skin templates. More significantly, the shape, curvature and nanotips of the synthetic arrays are virtually identical to the natural ones. Synthetic replication of the spinule arrays in popular biomaterials closely matched the natural spinules in length. In this study, we describe a simple benchtop biotemplating method using shed gecko lizard skin that generates duplicates that closely replicate the small nanotipped hairs (spinules) that cover the original skin.
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Such a project requires a very rapid and accurate small-scale fabrication process not involving lithography. We are interested in transferring these intricate architectures onto biomedical devices and daily-life surfaces.
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Hairs and other shaped protuberances manage with excessive water, light contaminants, predators or parasites in innovative ways. The external epithelial surfaces of plants and animals are frequently carpeted with small micro- and nanostructures, which broadens their adaptive capabilities in challenging physical habitats.