Results 21 to 30 of about 685 (181)
Flexoelectric effect modelling [PDF]
Opto-Electronics Review, 2008 AbstractA statistical theory of dipole flexoelectric (FE) polarization in liquid crystals is used to calculate temperature dependence of order parameters, elastic constants and FE coefficients. Two systems with polar wedge-shaped and banana-shaped molecules are investigated.
openaire +2 more sources
Flexoelectricity in ferroelectric materials
IET Nanodielectrics, 2019 Flexoelectricity is a gradient electromechanical effect that exists in all solid dielectrics. The effect was first predicted in the late 1950s, but received little interest because it was expected to be small.
Wanfeng Zhou, Pan Chen, Baojin Chu
doaj +1 more source
Flexoelectric Effect in Solids
Annual Review of Materials Research, 2013 Flexoelectricity—the coupling between polarization and strain gradients—is a universal effect allowed by symmetry in all materials. Following its discovery several decades ago, studies of flexoelectricity in solids have been scarce due to the seemingly small magnitude of this effect in bulk samples.
Zubko Pavlo +2 more
openaire +3 more sources
Modelling the flexoelectric effect in solids: A micromorphic approach [PDF]
Computer Methods in Applied Mechanics and Engineering, 2020 Flexoelectricity is characterised by the coupling of the gradient of the deformation and the electrical polarization in a dielectric material. A novel micromorphic approach is presented to accommodate the resulting higher-order gradient contributions arising in this highly-nonlinear and coupled problem within a classical finite element setting.
McBride, Andrew +2 more
openaire +2 more sources
Flexoelectric effect on thickness-shear vibration of a rectangular piezoelectric crystal plate
Materials Research Express, 2021 Thickness-shear (TSh) vibration of a rectangular piezoelectric crystal plate is studied with the consideration of flexoelectric effect in this paper. The developed theoretical model is based on the assumed displacement function which includes the anti ...
Yang Zheng, Bin Huang, Ji Wang
doaj +1 more source
iScience, 2023 Summary: Polymer-ceramic composites are commonly used as flexoelectric films. In existing studies, the flexoelectric effect of composites are generally improved by adjusting the material structures or adding ferroelectric materials.
Yujie Wei +7 more
doaj +1 more source
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 +1 more source
Journal of Materiomics, 2022 By engineering strain gradients in dielectrics, the flexoelectric effect can be created, which yields interesting physical properties via electromechanical coupling.
Zhizheng Jiang +10 more
doaj +1 more source
Flexoelectric and piezoelectric effects in micro- and nanocellulose films
Carbohydrate Polymers, 2023 In this work, we evaluated the flexoelectric and piezoelectric contributions to the overall macroscopic polarization in cellulose films. To this end, the flexoelectric μ31 and transverse effective piezoelectric e31,f coefficients of cellulose films were determined using cantilever beam bending.
Trellu, Hanna +6 more
openaire +4 more sources
Bending and Vibration Analysis of Flexoelectric Beam Structure on Linear Elastic Substrates
Micromachines, 2022 With the development of micro-nanotechnology, smart electronic devices are being updated and developed, and more and more flexoelectric sensors, actuators, and energy harvesters attached to elastic substrates have attracted a surge of interest due to ...
Maomao Zhang, Zhidong Zhou
doaj +1 more source