Flexoelectric Effect of Ferroelectric Materials and Its Applications
Actuators, 2023 The flexoelectric effect, which exists in all dielectrics, is an electromechanical effect that arises due to the coupling of strain gradients (or electric field gradients) with electric polarization (or mechanical stress).
Dae-Yong Jeong, Baojin Chu, Dongxia Tian
exaly +5 more sources
Coupling Analysis of Flexoelectric Effect on Functionally Graded Piezoelectric Cantilever Nanobeams [PDF]
Micromachines, 2021 The flexoelectric effect has a significant influence on the electro-mechanical coupling of micro-nano devices. This paper studies the mechanical and electrical properties of functionally graded flexo-piezoelectric beams under different electrical ...
Yuhang Chen +3 more
doaj +3 more sources
Large deflection analysis of circular piezoelectric micro-actuator with flexoelectric effect [PDF]
Scientific Reports, 2023 At micro/nano scale, the stiffening effect and flexoelectric effect of strain gradient play important roles in the electromechanical coupling response of piezoelectric micro-components.
Xue Ji
doaj +3 more sources
Free vibration of nanobeams with surface and dynamic flexoelectric effects [PDF]
Scientific ReportsIn this paper, the free vibration of piezoelectric nanobeams considering static flexoelectric, dynamic flexoelectric, and surface effects is studied.
Peng Wang +3 more
doaj +3 more sources
The giant flexoelectric effect in a luffa plant-based sponge for green devices and energy harvesters. [PDF]
Proc Natl Acad Sci U S A, 2023 Significance Designing soft materials that permit the facile conversion of mechanical deformation into electricity is of significant technological importance.
Jiang Y +4 more
europepmc +2 more sources
Flexoelectric effect in finite samples [PDF]
Journal of Applied Physics, 2012 Static flexoelectric effect in a finite sample of a solid is addressed in terms of phenomenological theory for the case of a thin plate subjected to bending. It has been shown that despite an explicit asymmetry inherent to the bulk constitutive electromechanical equations which take into account the flexoelectric coupling, there exists a situation ...
Tagantsev, Alexander K. +1 more
openaire +4 more sources
Flexoelectric Suppression of Interfacial Carrier Loss in BaTiO<sub>3</sub> Thin-Film Bulk Photovoltaic Systems. [PDF]
Adv Sci (Weinh)In single‐crystalline BaTiO3 thin films, flexoelectric strain gradients strongly enhance photocurrent by suppressing interfacial carrier loss. Loading experiments reveal a ∼35‐fold photocurrent increase with applied force. Self‐consistent electrostatic modeling shows that strain gradients reshape the interfacial potential landscape, strengthen local ...
Jang M +5 more
europepmc +2 more sources
Continuously controllable photoconductance in freestanding BiFeO3 by the macroscopic flexoelectric effect. [PDF]
Nat Commun, 2020 Flexoelectricity induced by the strain gradient is attracting much attention due to its potential applications in electronic devices. Here, by combining a tunable flexoelectric effect and the ferroelectric photovoltaic effect, we demonstrate the ...
Guo R +10 more
europepmc +2 more sources
Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks. [PDF]
Adv Sci (Weinh)Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Huang X, Li F, Zheng R.
europepmc +2 more sources
Journal of the Mechanical Behavior of Materials, 2023 The focus of this work is to study the influence of flexoelectric phenomenon on the electromechanical response of graphene-reinforced nanocomposite (GNC) nanorods.
Nevhal Subhash K. +2 more
doaj +2 more sources