Title :
Effect of target material on the laser induced pressure pulse measurements for thick P(VDF-TrFE) copolymers
Author :
Zhang, Y. ; Chan, H.L.W. ; Choy, C.L.
Author_Institution :
Dept. of Appl. Phys., Hong Kong Polytech., Kowloon, Hong Kong
Abstract :
The laser induced pressure pulse method has been used to study the non-uniform polarization distribution in 0.8 mm thick vinylidene fluoride/trifluoroethylene copolymer (P(VDF-TrFE)) films. Sprayed-on black paint was initially used as the target material and this led to the generation of a bipolar pressure pulse in the sample. With a different target material, we can now produce a monopolar pressure pulse. Measurements have been carried out using the new target material and the piezoelectric coefficient ezz has been estimated
Keywords :
dielectric measurement; dielectric polarisation; measurement by laser beam; piezoelectric materials; polymer blends; polymer films; P(VDF-TrFE) copolymer film; laser induced pressure pulse measurement; piezoelectric coefficient; polarization distribution; sprayed-on black paint; target material; vinylidene fluoride/trifluoroethylene copolymer; Laser beams; Laser theory; Optical materials; Optical propagation; Optical pulse generation; Optical pulses; Piezoelectric films; Piezoelectric materials; Piezoelectric polarization; Pulse measurements;
Conference_Titel :
Electrets, 1996. (ISE 9), 9th International Symposium on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-2695-4
DOI :
10.1109/ISE.1996.578081
