prov:value
| - The dielectric materials, that is, the electrically non-conductive layers, are metal oxides of high refractive index, such as, for example, TiO2, SiO2, Ti2 O3, Ta2 O5, ZrO2, Sn oxide, bismuth oxide, indium oxide, or metal sulfides, such as for example, ZnS. Such multi-layer systems, applied to plastic foils or glass plates, are used as heat transmission barriers or to provide for a flat plane heat
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