Title :
Space charge distribution measuring system using PVDF piezoelectric thin film
Author :
Oda, Tetsuji ; Takashima, Kazunori
Author_Institution :
Dept. of Electr. Eng., Tokyo Univ., Japan
Abstract :
A space charge density distribution measuring system based on a PPP (piezoelectrically induced pressure pulse wave) method was constructed. The pressure pulse wave is generated by pulse-driven piezoelectric PVDF (polyvinylidene fluoride) thin film as a piezoelectric pulse generator. Thin aluminum plate is used as a shield electrode which electrically separates between the pressure pulse generator and the sample holder. This thin shield electrode reduces attenuation and dispersion of the pressure pulse wave compared to the former system. From a PPP response to a sheet charge that is artificially made on a dielectric thin film, space resolution of the system is estimated to be about 7 μm. Using space charge distribution measurement and TSDC (thermally stimulated discharge current) measurement, charge behaviour of the corona-charged polytetrafluoroethylene (PTFE teflonTM) thin films are studied
Keywords :
charge measurement; corona; electrodes; piezoelectric devices; piezoelectric thin films; pulse generators; space charge; thermally stimulated currents; PVDF piezoelectric thin film; attenuation reduction; charge behaviour; corona-charged polytetrafluoroethylene; dielectric thin film; dispersion reduction; piezoelectric pulse generator; piezoelectrically induced pressure pulse wave; polyvinylidene fluoride thin film; shield electrode; space charge density distribution measuring system; teflon; thermally stimulated discharge current measurement; thin aluminum plate; Charge measurement; Current measurement; Density measurement; Dielectric measurements; Dielectric thin films; Electrodes; Pressure measurement; Pulse generation; Pulse measurements; Space charge;
Conference_Titel :
Industry Applications Conference, 1996. Thirty-First IAS Annual Meeting, IAS '96., Conference Record of the 1996 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-3544-9
DOI :
10.1109/IAS.1996.563833
