Can nanotubes make a lens array?

Research output: Contribution to journalArticlepeer-review


  • Ranjith Rajasekharan
  • Haider Butt
  • Qing Dai
  • Timothy D. Wilkinson
  • Gehan A J Amaratunga

Colleges, School and Institutes

External organisations

  • University of Cambridge
  • Centre of Molecular Materials for Photonics and Electronics
  • Sri Lanka Institute of Nanotechnology (SLINTEC)
  • Department of Chemical Engineering


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.


Original languageEnglish
JournalAdvanced Materials
Issue number23
Publication statusPublished - 19 Jun 2012


  • carbon nanotubes, diffraction, extremely black objects, fresnel lens, zones