Dealloying progress during nanoporous structure evolution analyzed by In situ resistometry

Eva-Maria Steyskal, Michael Seidl, Matthias Graf & Roland Würschum
The progress of dealloying, an electrochemical synthesis method capable of producing nanoporous structures with bulk outer dimensions, is studied by in situ resistometry. The resistance increases by three orders of magnitude while nanoporous gold or platinum is formed. Simultaneous monitoring of charge flow and electrical resistance increase proves to be an ideal combination for analyzing the etching progress, which in accordance with recent studies can be demonstrated to occur in two steps referred to as...
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