Composite mirrors on a substrate comprising a mixture of up to 20 percent of polymer and at least 80 percent of metal clusters, e.g. of gold, palladium or silver, which have a nominal diameter less than 100 nanometers and which are agglomerated in a layer conforming to the surface of the substrate. Composite...http://www.google.de/patents/US5517338?utm_source=gb-gplus-sharePatent US5517338 - Composite mirrors
