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ESEM images of a template before and after the complete removal of the oxide barrier layer from the pore bottom tips.aCross-section of an AAO film before the removal of alumina barrier layer;bMagnified view of the area marked inawith awhite rectangle;cPore bottom detail on which we can see how the pore bottoms are opened as a whole after the process described has been carried out (thewhite arrowheadsindicate the pore bottom tips)
