Biopolymer-assisted self-assembly of ZnO nanoarchitectures from nanorods

    Authors

    O. Lupan; L. Chow; G. Chai; A. Schulte; S. Park; O. Lopatiuk-Tirpak; L. Chernyak;H. Heinrich

    Comments

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    Abbreviated Journal Title

    Superlattices Microstruct.

    Keywords

    ZnO nanorod; self-assembly; nanofabrication; cathodeluminescence; ZINC-OXIDE; RAMAN-SCATTERING; VAPOR-DEPOSITION; DOPED ZNO; MICROSPHERES; GROWTH; FABRICATION; NANOSTRUCTURES; ARRAYS; NANOCOMPOSITES; Physics, Condensed Matter

    Abstract

    We have investigated three-dimensional (3-D) architectures - microspheres and radial structures - based on biopolymer-assisted self-assembly from one-dimcnsional ZnO nanorods. The developed method is simple, rapid and cost-effective and can be used for self-assembly of different complex superstructures. A possible model of 3-D architectures self-assembled with biopolymer assistance is presented using minimum energy considerations. Scanning electron microscopy, X-ray diffraction, energy dispersive Xray spectroscopy, transmission electron microscopy, micro-Raman spectroscopy and cathode luminescence investigations show that the novel 3-D architectures are built from high-purity ZnO nanorods with a wurtzite structure. The resulting radial structures show an intense ultraviolet (UV) cathode luminescence emission suggesting applications as UV light emitting diodes or lasers. Their structural characteristics endow them with a broad area of applications and offer a possibility to be used as fundamental low-dimensional building units. These building units open opportunities for the self-assembly of multifunctional nanostructured systems with applications in bioscience and nanomedicine, electronics and photonics. (c) 2007 Elsevier Ltd. All fights reserved.

    Journal Title

    Superlattices and Microstructures

    Volume

    43

    Issue/Number

    4

    Publication Date

    1-1-2008

    Document Type

    Article

    Language

    English

    First Page

    292

    Last Page

    302

    WOS Identifier

    WOS:000258520600004

    ISSN

    0749-6036

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