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    The preparation of a plasmonically resonant VO2 thermochromic pigment

    Access Status
    Fulltext not available
    Authors
    Bai, H.
    Cortie, M.
    Maaroof, A.
    Dowd, A.
    Kealley, Cat
    Smith, G.
    Date
    2009
    Type
    Journal Article
    
    Metadata
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    Citation
    Bai, H. and Cortie, M. and Maaroof, A. and Dowd, A. and Kealley, C. and Smith, G. 2009. The preparation of a plasmonically resonant VO2 thermochromic pigment. Nanotechnology. 20 (8).
    Source Title
    Nanotechnology
    DOI
    10.1088/0957-4484/20/8/085607
    ISSN
    0957-4484
    School
    Department of Medical Radiation Sciences
    URI
    http://hdl.handle.net/20.500.11937/47353
    Collection
    • Curtin Research Publications
    Abstract

    Vanadium dioxide (VO2) undergoes a reversible metal-insulator transition, normally at ~68 °C. While the properties of continuous semi-transparent coatings of VO2 are well known, there is far less information available concerning the potential use of discrete VO2 nanoparticles as a thermochromic pigment in opaque coatings. Individual VO 2 nanoparticles undergo a localized plasmon resonance with near-infrared light at about 1100 nm and this resonance can be switched on and off by simply varying the temperature of the system. Therefore, incorporation of VO2 nanoparticles into a coating system imbues the coating with the ability to self-adaptively modulate its own absorptive efficiency in the near-infrared. Here we examine the magnitude and control of this phenomenon. Prototype coatings are described, made using VO2 powder produced by an improved process. The materials are characterized using calorimetry, x-ray diffraction, high-resolution scanning electron microscopy, transmission electron microscopy, and by measurement of optical properties. © 2009 IOP Publishing Ltd.

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