Year: 2025
Type: article
Abstract: Defect dipoles in piezoceramics have recently been recognized as key regulators of electromechanical behavior, giving rise to a previously unidentified phenomenon: the electrobending effect. Unlike inverse piezoelectric and inverse flexoelectric effect, electrobending effect originates from the asymmetric response of defect dipoles in surface layers under external electric fields, producing pronounced bending deformation in thin ceramic samples. This article reviews the formation and dynamic response of defect dipoles, their symmetry‐conforming behavior, and the contrasting roles of [001]‐ and [110]‐oriented defect dipoles. Further, surface‐layer defect dipole configurations, bidirectional and unidirectional electrobending models, and newly proposed metrics for quantifying bending performance are discussed. Finally, challenges and prospects for defect dipole engineering and electrobending research are outlined, emphasizing their potential to enable next‐generation lead‐free piezoelectric materials and multifunctional devices.
Source: Advanced Engineering Materials
Authors: Shuo Tian, Bin Li, Yejing Dai
Institution: Sun Yat-sen University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,520
Awards: G5236392592, G6861783511, G8393473356
OpenAlex ID: W7105804500