Pyroelectric and nonlinear optical properties of poled polyvinylidene fluoride films

Effect of solvents on morphology and polymorphism of polyvinylidene fluoride membrane via supercritical CO2 induced phase separation

“…The polar b phase, with all trans planar zigzag conformation (TTT) is attractive for its piezo-, pyro-, and ferroelectric properties. [15][16][17] Crystallization of PVDF membrane is controlled by a number of variables including the concentration of casting solution, supercritical processing condition, solvent power, 18 and the additives in solution dope. 19 Previous research has found out that one crystalline phase could also be converted to another one by appropriate thermal, mechanical, or electric treatments.…”

Theoretical study on the optical properties of polyvinylidene fluoride crystal

“…They are widely used in industry as low-cost electromechanical devices such as transducers and detectors. Furthermore, the ferroelectric phases of PVDF copolymer crystals also have good non-linear optical (NLO) properties [2,3]. They have quite large optical windows (1200-200 nm),which makes them good candidates for use as frequency conversion materials working in the ultraviolet region.…”

“…Polyvinylidene fluoride (PVDF) and its copolymers with trifluoroethylene (TrFE) have been studied extensively due to their unique piezoelectric, pyroelectric, and ferroelectric properties [1][2][3][4]. They are widely used in industry as low-cost electromechanical devices such as transducers and detectors.…”

Fiber-optic polarization and phase modulator utilizing transparent piezofilm with indium tin oxide electrodes

“…The piezofilm as provided by the manufacturer would show visible macroscopic straight lines on the film surface as a result of the uniaxial stretching necessary to make the polymer film piezoelectric. [12][13][14] The eigenaxes of the piezofilm are thus seen to occur naturally in the directions along the stretch and perpendicular to it. In practice, the straight-line stretch marks generate a scattering pattern, which is a thin straight band again when an uncollimated beam of small diameter is used directly from the laser.…”