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Free-standing microscale structures of nanocrystalline zirconia with biologically replicable three-dimensional shapes

机译:具有生物可复制的三维形状的纳米晶氧化锆的独立式微尺度结构

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摘要

Microscale zirconia structures with intricate three-dimensional (3D) shapes and nanoscale features were synthesized using diatom (single-celled algae) microshells as transient scaffolds. After exposure to a zirconium alkoxide-bearing solution and firing at 550-850 deg C, silica-based diatom microshells were coated with a thin, continuous nanocrystalline zirconia layer. Predominantly tetragonal or monoclinic zirconia could be produced with appropriate heat treatments. Selective silica dissolution then yielded freestanding zirconia micro-assemblies that retained the microshell shape and fine features. Such hybrid (biological/synthetic chemical) processing may be used to mass-produce nanostructured micro-assemblies with a variety of 3D, biologically replicable shapes and tailored compositions for use in numerous applications.
机译:使用硅藻(单细胞藻类)微壳作为瞬态支架,合成了具有复杂的三维(3D)形状和纳米级特征的微尺度氧化锆结构。暴露于含锆醇盐的溶液中并在550-850℃下烧制后,将基于二氧化硅的硅藻微壳涂上一层连续的纳米晶态氧化锆薄层。通过适当的热处理,主要可以生成四方或单斜晶氧化锆。然后选择性的溶解二氧化硅产生独立的氧化锆微组件,该组件保留了微壳形状和精细特征。这种混合(生物/合成化学)处理可用于批量生产具有各种3D,生物可复制形状和量身定制的组成的纳米结构微组件,以用于多种应用。

著录项

  • 来源
    《Journal of Materials Research》 |2005年第2期|p.282-287|共6页
  • 作者

    Junping Zhao; Ye Cai;

  • 作者单位

    Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210Christopher S. Gaddis;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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