TY - JOUR A1 - Wegener, Michael A1 - Wirges, Werner A1 - Richter, Kristin A1 - Künstler, Wolfgang A1 - Gerhard, Reimund T1 - Charge stability and piezoelectric properties of porous fluoro-polymer space-charge electrets in layer systems Y1 - 2001 ER - TY - JOUR A1 - Paajanen, Mika A1 - Wegener, Michael A1 - Gerhard, Reimund T1 - Charging of cellular space-charge electret films in various gas atmospheres Y1 - 2001 SN - 0-7803-7053-8 ER - TY - JOUR A1 - Elling, B. A1 - Pinnow, M. A1 - Danz, Rudi A1 - Wegener, Michael A1 - Wirges, werner A1 - Gerhard, Reimund T1 - Coating of porous polytetrafluoroethylene films with other polymers for electret applications Y1 - 2001 SN - 0-7803-7053-8 ER - TY - JOUR A1 - Wegener, Michael A1 - Seiß, Martin A1 - Gerhard, Reimund T1 - Prepariation and assessment of piezo- and pyroelectric poly- (vinylidene fluoride-hexafluoropropylene) copolymer films Y1 - 2001 ER - TY - JOUR A1 - Mellinger, Axel A1 - Wegener, Michael A1 - Wirges, Werner A1 - Gerhard, Reimund T1 - Thermally stable dynamic piezoelectricity in sandwich films of porous and non-porous amorphous fluoropolymer Y1 - 2001 ER - TY - JOUR A1 - Paajanen, Mika A1 - Wegener, Michael A1 - Gerhard, Reimund T1 - Understanding the role of the gas in the voids during corona charging of cellular electret films : a way to enhance their piezoelectricity Y1 - 2001 ER -