Title :
Temperature Dependence of High Frequency Parameters of PVDF for Length mode Ultrasonic Air Transducers
Author :
Toda, Minoru ; Thompson, Mitch
Author_Institution :
Meas. Specialties Inc., Wayne
Abstract :
Temperature dependent high frequency (30-60 kHz) parameters of piezoelectric PVDF have been investigated by use of the length mode resonance. The material parameters were obtained by comparing the impedance angles around the resonance peaks with theoretical values. Data is presented showing that piezoelectric response at a high frequency decreases more quickly with decreasing temperature than the normally reported low frequency values, an important consideration in device design.
Keywords :
piezoelectric devices; ultrasonic transducers; PVDF; length mode ultrasonic air transducers; piezoelectric response; temperature dependence; Dielectric measurements; Equivalent circuits; Frequency measurement; Impedance; Length measurement; Resonance; Strips; Temperature dependence; Ultrasonic transducers; Ultrasonic variables measurement;
Conference_Titel :
Sensors, 2007 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-1261-7
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2007.4388441
