Advanced Materials

Can Nanotubes Make a Lens Array?

Authors

  • Ranjith Rajasekharan,

    1. Department of Engineering, Centre of Molecular Materials for Photonics and Electronics, University of Cambridge, 9 J.J. Thomson Avenue, Cambridge CB3 0FA, UK
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  • Haider Butt,

    1. Department of Engineering, Centre of Molecular Materials for Photonics and Electronics, University of Cambridge, 9 J.J. Thomson Avenue, Cambridge CB3 0FA, UK
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  • Qing Dai,

    1. Department of Engineering, Centre of Molecular Materials for Photonics and Electronics, University of Cambridge, 9 J.J. Thomson Avenue, Cambridge CB3 0FA, UK
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  • Timothy D. Wilkinson,

    Corresponding author
    1. Department of Engineering, Centre of Molecular Materials for Photonics and Electronics, University of Cambridge, 9 J.J. Thomson Avenue, Cambridge CB3 0FA, UK
    • Department of Engineering, Centre of Molecular Materials for Photonics and Electronics, University of Cambridge, 9 J.J. Thomson Avenue, Cambridge CB3 0FA, UK.
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  • Gehan A. J. Amaratunga

    1. Department of Engineering, Centre of Molecular Materials for Photonics and Electronics, University of Cambridge, 9 J.J. Thomson Avenue, Cambridge CB3 0FA, UK
    2. Sri Lanka Institute of Nanotechnology (SLINTEC), Lot 14, Zone A, EPZ, Biyagama, Sri Lanka
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Abstract

Reflective binary Fresnel lenses fabricated so far all suffer from reflections from the opaque zones and hence degradation in focusing and lensing properties. Here a solution is found to this problem by developing a carbon nanotube Fresnel lens, where the darkest man-made material ever, i.e., low-density vertically aligned carbon nanotube arrays, are exploited.

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