Electrostatically charged filtration media with structured surfaces

An electrostaticly charged filtration media is provided including a plurality of polymeric structured polymeric film layers having a structured surface defined on at least one face of each structured film layer forming at least in part flow channels. The plurality of structured film layers are configured as a stack with the structured surfaces defining a plurality of ordered inlets open through a face of the stack that are in fluid communication with ordered fluid pathways. Each fluid pathway is defined at least in part by at least one discrete flow channel such that fluid can flow substantially unimpeded from one of the inlets to an outlet opening at another face of the stack. A layer of fluid pathways is defined by two opposing charged film layers at least one of which is a structured film layer. The flow channels have an average height of from 0.1 mm to 5 mm and an average width of from 0.05 mm to 50 mm and an average aspect ratio of from 0.5 to 10.