| http://www.w3.org/ns/prov#value | - Each of the first conducting film 109 and the second conducting film 114 can be made from a metal with low resistance, such as Al, Cu, Ag, Au and Pt, an alloy including any of these metals as a principal constituent, or a metal with a high melting point such as W. Alternatively, a semiconductor material such as polysilicon can be used instead of such a metal.
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