含氟驻极体与压电体犹如磁铁能产生静磁场一样,驻极体是一种能产生稳定静电场,并保持半永久电极化的电介质(即绝缘体)。其中有些驻极体还具有明显的压电性,具有压电性的驻极体又称压电体。什么是压电性呢?如石英、磷酸二氢钾等晶体,在受到外界的机械压力或拉力时,会发生压缩或拉长等形变,并在其两边产生相反的电 Fluorine-based electrets and piezoelectrics are like magnets capable of generating static magnetic fields. Electret is a dielectric (ie, insulator) that produces a stable electrostatic field while maintaining semi-permanent electrical polarization. Some electrets also have obvious piezoelectricity, and the piezoelectric electrets are also called piezoelectric bodies. What is piezoelectricity? Crystal, such as quartz, potassium dihydrogen phosphate and other crystals, subject to external mechanical pressure or tension, compression or elongation occurs deformation, and the opposite sides of the electricity generated