Devitrite-based optical diffusers

Haider Butt, Kevin M. Knowles, Yunuen Montelongo, Gehan A.J. Amaratunga, Timothy D. Wilkinson

Research output: Contribution to journalArticlepeer-review

40 Scopus citations


Devitrite is a novel material produced by heat treatment of commercial soda-lime-silica glass. It consists of fans of needle-like crystals which can extend up to several millimeters and have interspacings of up to a few hundred nanometers. To date, only the material properties of devitrite have been reported, and there has been a distinct lack of research on using it for optical applications. In this study, we demonstrate that randomly oriented fans of devitrite crystals can act as highly efficient diffusers for visible light. Devitrite crystals produce phase modulation of light because of their relatively high anisotropy. The nanoscale spacings between these needles enable light to be diffused to large scattering angles. Experimentally measured results suggest that light diffusion patterns with beam widths of up to 120° are produced. Since devitrite is an inexpensive material to produce, it has the potential to be used in a variety of commercial applications.

Original languageBritish English
Pages (from-to)2929-2935
Number of pages7
JournalACS Nano
Issue number3
StatePublished - 25 Mar 2014


  • devitrite
  • diffraction
  • diffusers
  • nanoscale spacings


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