| http://www.w3.org/ns/prov#value | - particles comprise composite ultrafine metal particles each having a core substantially made of a metal component and a covering layer made of an organic compound chemically bonded to the core. [0064] In the above apparatus, the film is made of an organic material of C, H, O, and N. [0065] The above and other objects, features, and advantages of the present invention will become apparent from the
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