[Retracted] Progress of Laser Processing Technology in Ferroelectric Nanocomposites

Table 2

Dielectric constants of several common polymers.

Polymer	Dielectric constant	Breakdown strength (kV/mm)
Polypropylene (PP)	2.4	>500
Polyester (PET)	1.3	>400
Polycarbonate (PC)	2.8	>300
Polyimide (PI)	2.3	<400
Polyvinylidene fluoride (PVDF)	2.4	<500