| http://www.w3.org/ns/prov#value | - The coating may consist of powder/dust, deposited on the barrier by some prior-art atomizing process, or thin-film technique such as evaporation (PVD), sputtering, or be in the form of a net or a perforated (for instance by laser) foil which is attached in some suitable manner, for instance gluing to the barrier using a biological glue or laser welded thereto.
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