CUED Publications database

Devitrite-based optical diffusers

Butt, H and Knowles, KM and Montelongo, Y and Amaratunga, GAJ and Wilkinson, TD (2014) Devitrite-based optical diffusers. ACS Nano, 8. pp. 2929-2935. ISSN 1936-0851

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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. © 2014 American Chemical Society.

Item Type: Article
Divisions: Div B > Electronics, Power & Energy Conversion
Div B > Photonics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:01
Last Modified: 13 Apr 2021 09:25
DOI: 10.1021/nn500155e