Title :
Real charges and frozen-in polarization in PET electrets
Author :
Motyl, E. ; Krause, T.
Author_Institution :
Inst. of Electr. Eng. Fundamentals, Wroclaw Univ., Poland
Abstract :
The new experimental method for discriminating between polarization and real charges in polymeric electrets was suggested. It is based on measurements of local electrical field E[x,T(t)] using the step electroacoustic method (SEA) and total current density JTSD[T(t)] during thermally stimulated discharge of the electret sample. The above method, named shortly E-j, was applied for investigation of corona charged PET electrets.
Keywords :
acoustoelectric effects; corona; current density; electrets; electric charge; electric fields; polymers; thermally stimulated currents; corona charged PET electrets; current density; electrical field; frozen-in polarization; polymeric electrets; real charges; step electroacoustic method; thermally stimulated discharge; Corona; Current density; Current measurement; Density measurement; Electrets; Electric variables measurement; Polarization; Polymers; Positron emission tomography; Sea measurements;
Conference_Titel :
Electrets, 2005. ISE-12. 2005 12th International Symposium on
Print_ISBN :
0-7803-9116-0
DOI :
10.1109/ISE.2005.1612368