| http://www.w3.org/ns/prov#value | - When coated with an additional electrically-conductive layer 17 using a process such as sputtering, for example, the remaining volume may remain gas or vacuum, since sputtering is a directional deposition process that may effectively coat a surface but may not infiltrate into crevices between electrically-conductive, light-scattering particles 23, thereby maintaining a high-refractive-index differ
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