Lead-free ferroelectrics with giant unipolar strain for high …
WEBAug 5, 2024 · The actuation performance of piezoelectric actuator is closely related to the unipolar electrostrain of the piezo/ferroelectric ceramics. In applications, the piezo/ferroelectric ceramics are...
Electro-thermal actuation in percolative ferroelectric polymer ...
WEBMay 25, 2023 · The most technologically useful ferroelectrics for electroactive actuators include ceramics and crystals represented by Pb (ZrTi)O 3 (PZT) (refs. 8, 9, 10) and Pb (Zn 1/3 Nb 2/3)O 3 -PbTiO 3...
Photostrictive Actuators Based on Freestanding Ferroelectric …
WEBMar 28, 2024 · Time-resolved X-ray micro-diffraction under illumination and temperature-dependent holographic interferometry provide combined evidence for the photostrictive strain in BaTiO 3 originating from a partial screening of ferroelectric polarization by photo-excited carriers, which decreases the tetragonality of the unit cell.
New ferroelectric material could give robots muscles - Phys.org
WEBJun 30, 2023 · A new type of ferroelectric polymer that is exceptionally good at converting electrical energy into mechanical strain holds promise as a high-performance motion controller or "actuator" with...
Polymer actuation using a Joule-heating-induced ferroelectric …
WEBMay 25, 2023 · In contrast to current ferroelectrics whose phase transition and actuation are generated by applying an electric field, we have developed an electro-thermal phase transition method to actuate the...
Artificial Muscles Flex for the First Time: Ferroelectric Polymer ...
WEBJul 8, 2023 · A new type of ferroelectric polymer that is exceptionally good at converting electrical energy into mechanical strain holds promise as a high-performance motion controller or “actuator” with great potential for applications in medical devices, advanced robotics, and precision positioning systems, according to …
Fast Response, High‐Power Tunable Ultrathin Soft Actuator by …
WEBJan 29, 2023 · Ferroelectric polymers can aid in the realization of such soft actuators. However, actuators using such materials encounter problems in terms of the response frequency to an applied voltage.
Electroactive polymer (EAP) actuators—background review
WEBMar 22, 2019 · 1 Introduction. Manipulation, mobility, and activation of engineered mechanisms and systems are done by actuators, typically consisting of motors, gearboxes, and associated mechanisms. These are hard, heavy, and noisy in contrast to muscles of biological systems, which are soft, light weight, and quiet.
Electro-thermal actuation in percolative ferroelectric polymer ...
WEBOverview. Abstract. The interconversion between electrical and mechanical energies is pivotal to ferroelectrics to enable their applications in transducers, actuators and sensors. Ferroelectric polymers exhibit a giant electric-field-induced strain (>4.0%), markedly exceeding the actuation strain (≤1.7%) of piezoelectric ceramics and crystals.
Ferroelectric polymers as multifunctional electroactive materials ...
WEBJun 1, 2015 · Although polyvinylidene difluoride (PVDF)-based ferroelectric polymers have been known for several decades, recent findings reveal the potential of this class of electroactive polymers (EAPs) to achieve giant electroactive responses by tuning the molecular, nano, and meso-structures.