Glass surfaces can be roughened in a defined way by reactive ion etching (RIE). Different morphologies have previously been achieved this way by varying RIE process parameters. Each morphology shows specific optical scattering characteristics. The surface morphologies can be nano-moulded (by casting) into an elastomer by a two-step process with high shape fidelity. Thus both glass and elastomer surface show nearly the same optical scattering behaviour.
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