Validation of Electrostrictive Performance of P(VDF‐TrFE‐CFE) for kHz Range Applications

ABSTRACT This paper reports on the establishment of an effective and reliable characterization method for evaluating the electrostrictive behavior of materials subjected to high‐frequency electric fields (kilohertz range). The material studied is the relaxor ferroelectric polymer P(VDF–TrFE–CFE), which is considered a promising candidate for high‐speed actuation in adaptive optics systems. To assess the electrostrictive response of P(VDF–TrFE–CFE) under such conditions, the proposed approach relies on Maxwell's formulation of electrostrictive strain . The permittivity and mechanical modulus were first experimentally characterized in the kilohertz (kHz) range before being implemented in a numerical model developed in COMSOL based on Maxwell's equations. The comparison between experimental measurements and numerical predictions enabled the assessment of the electrostrictive behavior of P(VDF–TrFE–CFE) under high‐frequency electric excitation. The proposed methodology provides a robust framework for evaluating the stability of electromechanical properties in relaxor ferroelectric polymers operating in the kilohertz range. This foundational approach is essential for advancing the development of next‐generation actuator materials and will facilitate progress toward rapid‐response adaptive optical systems.