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Nanostructured Hybrid of Immiscible Gold and Silicon and Its Effect on Proliferation and Adhesion of Fibroblasts and Osteoblasts

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Hybrid biomaterials are a combination of two or more different materials that work synergistically to produce superior properties. Nano structuring of such hybrid materials has also posed complications. In this study, we present, for the first time a nanofibrous hybrid of gold and silicon fabricated by femtosecond laser synthesis for tissue engineering applications. The formation of a completely new phase, Au3Si (212) is reported. The formation mechanism is explained by vapor condensation. Particle sizes of 2–10 nm and 37–49 nm for gold and gold concentrations of 35–78% are achieved. The effect of this hybrid on cell growth was assessed using fibroblasts and osteoblasts. There was a significant decrease in both osteoblast and fibroblast proliferation with the increase of gold in the hybrid nanostructure. This novel hybrid nanofibrous matrix provides a method to effectively control the proliferation and adhesion of cells. Femtosecond laser synthesis presents a new standard by which not only a single element biomaterial but also multiple immiscible element hybrid biomaterials can be fabricated. This technique provides a paradigm shift in the fabrication of novel nanostructured immiscible hybrid biomaterials.
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Keywords: CELL PROLIFERATION; FEMTOSECOND LASER; GOLD–SILICON; HYBRID BIOMATERIALS; NANOSTRUCTURED

Document Type: Research Article

Publication date: June 1, 2014

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  • Journal of Biomedical Nanotechnology (JBN) is a peer-reviewed multidisciplinary journal providing broad coverage in all research areas focused on the applications of nanotechnology in medicine, drug delivery systems, infectious disease, biomedical sciences, biotechnology, and all other related fields of life sciences.
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