4High quality metal reflectors based on gold, aluminium and silver are available. Aluminium and silver materials can be protected through deposition of a thin protective overcoat. Films are ultrasmooth and pure providing high reflectivity in the UV through to IR.
![AFM image of ultrasmooth CFM sputtered metal film](https://applied-multilayers.com/wp-content/uploads/2017/02/process-metal_reflectors1-300x225.jpg)
Acknowledgement: Data supplied by Cambridge Display Technology Ltd