Title :
Mechanical and electrical response of charged polymers with cellular structure
Author :
Hillenbrand, J. ; Sessler, G.M.
Author_Institution :
Inst. of Telecommun. & Electroacoust., Darmstadt Univ. of Technol., Germany
Abstract :
Charged films with a cellular structure show pseudo-piezoelectric properties with high transducer constants. Measurements of the direct and inverse transducer constants, the thermal stability of the charge, and Young´s modulus of such films are presented. The electromechanical response equations are derived for their operation as sensors and actuators. By assuming reasonable charge distributions and charge densities, the calculated transducer constants are in good agreement with the measured values. Both the measurements and the theoretical model show the reciprocity of the transducer operation
Keywords :
Young´s modulus; insulating thin films; organic insulating materials; piezoelectric materials; polymers; thermal stability; Young´s modulus; cellular structure; charge densities; charge distributions; charged polymers; direct transducer constants; electrical response; electromechanical response equations; high transducer constants; inverse transducer constants; mechanical response; pseudo-piezoelectric properties; thermal stability; Actuators; Charge measurement; Corona; Current measurement; Equations; Mechanical factors; Piezoelectric films; Piezoelectric transducers; Polymer films; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1999 Annual Report Conference on
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-5414-1
DOI :
10.1109/CEIDP.1999.804588
