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Highly self-assembled nanotubular aluminum oxide by hard anodization

机译：通过硬阳极氧化高度自组装的纳米管氧化铝

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摘要

Anodized aluminum oxide (AAO), well-known hexagonally ordered vertical pore nanostructure, can be altered to form nanotubular AAO arrays potentially having many favorable properties due to its large surface area and unique geometry. We present here a creation of novel nanotubular AAO structure by the hard anodization technique. Because of the guided formation of void channels at triple cell junctions during the course of the controlled anodization process, periodically spaced-apart aluminum oxide nanotubular geometry could be achieved over large areas. Further separation to well-defined individual AAO nanotube arrays was obtained when etched in a mixed CuCl_2/HCl solution during Al substrate removal. Nanotubular geometry AAO with periodic and mechanically robust structure can be useful not only for biomedical applications such as to enhance cell adhesion and viability or drug delivery vehicles, but also as a large-surface-area catalyst support or sensor elements.
机译：阳极氧化铝（AAO），众所周知的六角形有序垂直孔纳米结构，可以改变以形成纳米管AAO阵列，由于其较大的表面积和独特的几何形状而可能具有许多有利的性能。我们在这里提出了通过硬质阳极氧化技术的新型纳米管AAO结构的创建。由于在受控阳极氧化过程中在三单元结处引导形成空隙通道，因此可以在大面积上实现周期性间隔开的氧化铝纳米管几何形状。当在去除Al衬底的过程中在混合的CuCl_2 / HCl溶液中进行蚀刻时，可以进一步分离为明确的单个AAO纳米管阵列。具有周期性和机械鲁棒性结构的纳米管几何形状的AAO不仅可用于生物医学应用（例如，增强细胞粘附力和生存力）或药物输送载体，而且还可用作大表面积催化剂载体或传感器元件。

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  • 来源
    《Journal of Materials Research》 |2011年第2期|p.186-193|共8页
  • 作者

    Kunbae Noh; Karla S. Brammer; Hyunsu Kim; Se-Yeon Jung; Tae-Yeon Seong; Sungho Jin;

  • 作者单位

    Materials Science and Engineering, University of California, San Diego, La Jolla, California 92093;

    Materials Science and Engineering, University of California, San Diego, La Jolla, California 92093;

    Materials Science and Engineering, University of California, San Diego, La Jolla, California 92093;

    Department of Materials Science and Engineering, Korea University, Seoul, Korea;

    Department of Materials Science and Engineering, Korea University, Seoul, Korea;

    Materials Science and Engineering, University of California, San Diego, La Jolla, California 92093;

  • 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);
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  • 正文语种 eng
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