Title :
Evolution of electret applications
Author :
Lewiner, Jacques
Author_Institution :
Lab. d´´Electr. Generale, Ecole Superieure de Phys. et de Chimie Ind., Paris, France
Abstract :
Charge storage or polarization phenomena in dielectrics can be associated with two types of effects. Indeed, a frozen polarization or trapped charges can either induce internal effects or create an external electric field. In the first case, the physical properties of the material can be modified leading for instance to piezoelectricity or to nonlinear effects. In the second case, an external electric field of large magnitude can be created. The author recalls the evolution which took place for both types of electrets and associated applications
Keywords :
dielectric polarisation; electrets; piezoelectricity; charge storage; dielectrics; electret applications; external electric field; frozen polarization; internal effects; nonlinear effects; piezoelectricity; polarization phenomena; trapped charges; Conducting materials; Dielectric materials; Electrets; Material storage; Mechanical factors; Microphones; Piezoelectric materials; Piezoelectric polarization; Plastics industry; Polymers;
Conference_Titel :
Electrets, 1996. (ISE 9), 9th International Symposium on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-2695-4
DOI :
10.1109/ISE.1996.578255
