压电
材料科学
聚合物
微晶
复合材料
电介质
极化(电化学)
模数
弹性模量
光电子学
化学
物理化学
冶金
出处
期刊:Ultrasonics
[Elsevier]
日期:1968-10-01
卷期号:6 (4): 229-234
被引量:102
标识
DOI:10.1016/0041-624x(68)90132-7
摘要
The piezoelectric effect in polymers is usually explained in terms of the uniaxial orientation of the polymer crystallites and the classical piezoelectric property of these crystallites. Polarization caused by stress gradient seems to be necessary to the understanding of the geometrical relationship between stress and polarization. Studies of the temperature variation of the complex piezoelectric modulus have revealed a new type of relaxation phenomenon, which is closely related to elastic and dielectric relaxation. The possibility of a polymer piezoelectric transducer has been demonstrated by a microphone using an elongated film of poly-γ-methyl-L-glutamate. The physiological significance of piezoelectricity in biological polymers, such as its correlation with the growth mechanism of bone and with the sense of a mechanical stimulus, is worth further investigation.
科研通智能强力驱动
Strongly Powered by AbleSci AI