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- W4311688965 endingPage "113092" @default.
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- W4311688965 abstract "Insects and plants exhibit bactericidal properties through surface nanostructures, such as nanospikes, which physically kill bacteria without antibiotics or chemicals. This is a promising new avenue for achieving antibacterial surfaces. However, the existing methods for fabricating nanospikes are incapable of producing uniform nanostructures on a large scale and in a cost-effective manner. In this paper, a scalable nanofabrication method involving the application of nanosphere lithography and reactive ion etching for constructing nanospike surfaces is demonstrated. Low-cost silicon nanospikes with uniform spacing that were sized similarly to biological nanospikes on cicada wings with a 4-inch wafer scale were fabricated. The spacing, tip radius, and base diameter of the silicon nanospikes were controlled precisely by adjusting the nanosphere diameters, etching conditions, and diameter reduction. The bactericidal properties of the silicon nanospikes with 300 nm spacing were measured quantitatively using the standard viability plate count method; they killed E. coli cells with 59 % efficiency within 30 h. The antibacterial ability of the nanospike surface was further indicated by the morphological differences between bacteria observed in the scanning electron microscopic images as well as the live/dead stains of fluorescence signals. The fabrication process combined the advantages of both top-down and bottom-up methods and was a significant step toward affordable bio-inspired antibacterial surfaces." @default.
- W4311688965 created "2022-12-28" @default.
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- W4311688965 date "2023-02-01" @default.
- W4311688965 modified "2023-10-04" @default.
- W4311688965 title "A hybrid and scalable nanofabrication approach for bio-inspired bactericidal silicon nanospike surfaces" @default.
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- W4311688965 doi "https://doi.org/10.1016/j.colsurfb.2022.113092" @default.
- W4311688965 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36577343" @default.
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