Abstract
Planar silver layers have been produced on the surface of porous glass (PG) membranes by multiple impregnations with an aqueous AgNO3 solution, followed by hydrogen reduction of the salt to silver metal. In all cases, electron emission from the surface of the metallized porous glasses is observed above threshold electric fields lower than 2 V/μm. The emittance of the Ag/PG membranes decreases as the amount of silver increases above a nominal monolayer.
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