Devitrite-based optical diffusers

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

doi:10.1021/nn500155e

Devitrite-based optical diffusers

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

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

262 Downloads (Pure)

Abstract

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 language	English
Pages (from-to)	2929-2935
Number of pages	7
Journal	ACS Nano
Volume	8
Issue number	3
Early online date	21 Feb 2014
DOIs	https://doi.org/10.1021/nn500155e
Publication status	Published - 25 Mar 2014

Keywords

devitrite
diffraction
diffusers
nanoscale spacings

ASJC Scopus subject areas

Engineering(all)
Materials Science(all)
Physics and Astronomy(all)

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10.1021/nn500155eLicence: None: All rights reserved

Butt_et_al_Devitrite-based_optical_diffusers_ACS_Nano_2014_Post-Print
This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in ACS Nano, copyright © American Chemical Society after peer review. To access the final edited and published work, see: http://pubs.acs.org/doi/abs/10.1021/nn500155e. Eligibility for repository checked May 2015
Accepted author manuscript, 896 KBLicence: Other (please specify with Rights Statement)

http://pubs.acs.org/doi/abs/10.1021/nn500155eLicence: None: All rights reserved

IAA 2012 - FOF Devitrite based optical diffusers
Butt, H.
Engineering & Physical Science Research Council
1/06/14 → 30/11/14
Project: Research Councils
Impact Acceleration Account - UOB 2012
Tickell, A.
Engineering & Physical Science Research Council
1/10/12 → 31/03/17
Project: Research Councils

Cite this

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AU - Butt, Haider

AU - Knowles, Kevin M.

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AU - Amaratunga, Gehan A J

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Y1 - 2014/3/25

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Devitrite-based optical diffusers

Abstract

Keywords

ASJC Scopus subject areas

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Projects

IAA 2012 - FOF Devitrite based optical diffusers

Impact Acceleration Account - UOB 2012

Cite this