Abstract
Electrostriction materials are used in the industry and research as transducers in low dimensional systems such as micro-pumps and micro-electromechanical systems (MEMS). Thanks to the high actuation accuracy and lack of hysteresis, they are preferred to piezoelectric materials as thin films. Many kinds of materials show high electrostriction activity, and their variety is a crucial advantage for the development of lead-free transducers. This chapter describes the properties and performances of oxide electrostrictors, particularly Gd-doped CeO2. We analyze the unusually high electrostriction effect for oxygen vacancies interaction in the lattice. Finally, we highlight the characteristics of microactuator systems such as thin films and free-standing membranes.
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