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Advanced Materials

Formation of Self-Organized Superlattice Nanotube Arrays – Embedding Heterojunctions into Nanotube Walls

Authors

  • Wei Wei,

    1. Department of Materials Science WW-4, LKO, University of Erlangen-Nuremberg, Martenstrasse 7, 91058 Erlangen (Germany)
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  • Himendra Jha,

    1. Department of Materials Science WW-4, LKO, University of Erlangen-Nuremberg, Martenstrasse 7, 91058 Erlangen (Germany)
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  • Guang Yang,

    1. Department of Materials Science, Center for Nanoanalysis and Electron Microscopy (CENEM), University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen (Germany)
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  • Robert Hahn,

    1. Department of Materials Science WW-4, LKO, University of Erlangen-Nuremberg, Martenstrasse 7, 91058 Erlangen (Germany)
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  • Indhumati Paramasivam,

    1. Department of Materials Science WW-4, LKO, University of Erlangen-Nuremberg, Martenstrasse 7, 91058 Erlangen (Germany)
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  • Steffen Berger,

    1. Department of Materials Science WW-4, LKO, University of Erlangen-Nuremberg, Martenstrasse 7, 91058 Erlangen (Germany)
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  • Erdmann Spiecker,

    1. Department of Materials Science, Center for Nanoanalysis and Electron Microscopy (CENEM), University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen (Germany)
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  • Patrik Schmuki

    Corresponding author
    1. Department of Materials Science WW-4, LKO, University of Erlangen-Nuremberg, Martenstrasse 7, 91058 Erlangen (Germany)
    • Department of Materials Science WW-4, LKO, University of Erlangen-Nuremberg, Martenstrasse 7, 91058 Erlangen (Germany).
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Abstract

In the present work we introduce the growth of 3D-superlattice nanotubes by a simple anodization technique. Highly defined self-organized, oxide tubes with modulated tube wall composition can be created that allow altering and tuning optical, electrical and chemical properties of such nanometer-size architectures. The image shows a stacked nanotube array with built-in TiO2/ Ta2O5 heterojunctions.

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