Interactive Resource icon  Aluminium Surface Treatments for Maximum Reflectivity

 
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Resource type: Interactive Resource
Description: By using Physical Vapour Deposition (PVD), multi-layer structures - based on the principle of high-low refractive index - are created on the aluminium surface. These can increase the total reflectance to a maximum of more than 95%, thereby creating very bright surfaces to be used for lighting applications. This interactive animation shows how three layers applied on top of anodized aluminium to increase the reflectance: a layer of high purity Al (99.99%) and two transparent dielectric layers.
Keywords: refractive index • reflectivity • optical thickness • physical vapour deposition • dielectric
Categories: Materials > Metals & alloys > Aluminium & alloys
Processes > Surface treatments
Properties > Electrical, magnetic & optical > Optical
Created by: MATTER, The University of Liverpool
Iris De Graeve, Vrije Universiteit Brussel (VUB)
Herman Terryn, Vrije Universiteit Brussel (VUB)
Contributions: Marc Ryckeboer, Sapa
Christophe Sigli, Alcan Centre de Recherches de Voreppe
Hugh Shercliff, University of Cambridge
Published by: European Aluminium Association, Brussels
License: This resource is released under the Creative Commons Attribution Non-Commercial No Derivatives license (2.0 UK: England & Wales).
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Date created: 27 July 2004
Date added: 21 December 2009
Package:
Resource ID: 2605