Results 21 to 30 of about 388,640 (201)

Optical determination of flexoelectric coefficients and surface polarization in a hybrid aligned nematic cell [PDF]

, 2001
We present an optical study of the influence of both the flexoelectric effect and surface polarization on a hybrid-aligned nematic cell using the half-leaky guided mode technique. Tilt angle profiles, obtained from fits of experimental data (reflectivity
F. Ciuchi (21816047), A. Mazzulla (2816065), J. Roy Sambles (18134055)   +2 more
core   +7 more sources

Effect of Pre-Polarization Process on the Apparent Piezoelectric Response Measured by Point-Ring Method in Ferroelectric Perovskite Oxide Ceramics

Energies, 2022
Both flexoelectricity and piezoelectricity belong to the electromechanical coupling effect. While piezoelectricity only exists in materials whose crystal structure is noncentrosymmetric and a pre-polarization process is necessary for ferroelectric ...
Yuanzhe Li, Xiang Huang, Junyu Tao, Jijie Huang, Weiming Xiong, Weijin Chen, Yue Zheng   +6 more
doaj   +1 more source

Performance analysis of the functionally graded flexoelectric-piezoelectric energy harvesting

Frontiers in Materials, 2022
In the present paper, the output performances of the functionally graded flexoelectric-piezoelectric (FGFP) energy harvesting subjected to an external harmonic excitation, considering the effect of piezoelectric polarization direction, are addressed ...
Zhengyu Ke, Zhidong Zhou, Zhidong Zhou
doaj   +1 more source

Coexistence of Flexo- and Ferro-Electric Effects in an Ordered Assembly of BaTiO₃ Nanocubes

Nanomaterials, 2022
It has been reported that the flexoelectric effect could be dominant in the nanoscale. The discrepancy between theory and experiments on the frequency dependence of the dielectric constant of an ordered assembly of BaTiO3 nanocubes is nearly resolved by ...
Kyuichi Yasui, Hiroki Itasaka, Ken-ichi Mimura, Kazumi Kato   +3 more
doaj   +1 more source

Research on Output Characteristics of Microscale BST Laminate Structure Based on Mixed Finite Element Method

Micromachines, 2023
The flexoelectric effect, which is sensitive to size, refers to the phenomenon of coupling between the strain gradient and electrical polarization and involves higher-order derivatives of physical quantities such as displacement, and the analytical ...
Ying Luo, Tian Pu, Hongguang Liu
doaj   +1 more source

Flexoelectric Polarization Enhancement in Paraelectric BaHfO₃ via Strain Gradient Engineering. [PDF]

Small
Flexoelectricity – polarization induced by strain gradients – offers a route to polar functionality in centrosymmetric dielectrics, where traditional piezoelectric effects are absent.
Piecuch T, Daneu N, Brock JA, Huang X, Radoševič T, Müller AM, Vockenhuber C, Schneider CW, Lippert T, Shepelin NA.   +9 more
europepmc   +2 more sources

Coupling Analysis of Flexoelectric Effect on Functionally Graded Piezoelectric Cantilever Nanobeams

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, Maomao Zhang, Yaxuan Su, Zhidong Zhou   +3 more
doaj   +1 more source

Flexoelectric-induced photovoltaic effects and tunable photocurrents in flexible LaFeO3 epitaxial heterostructures

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, Zhiyu Xu, Zhongnan Xi, Yihao Yang, Ming Wu, Yuke Li, Xiang Li, Qianying Wang, Chen Li, Di Wu, Zheng Wen   +10 more
doaj   +1 more source

Flexoelectric Polarization in Liquid Crystalline Elastomers Prepared by Cross-Linking under Horseshoe-Shaped Deformation

, 2023
Flexoelectric polarization, which is caused by symmetry breaking in a distortion of material, was investigated in liquid crystalline elastomers composed of wedge-shaped mesogens prepared by cross-linking under horseshoe-shaped deformation.
Hiroyuki Minami, Shiori Taira, Katsumi Yamada, Kazuyuki Hiraoka, Toshio Ishihara, Toshihiro Hiejima   +5 more
core   +1 more source

Influence of flexoelectric effect on the bending rigidity of a Timoshenko graphene-reinforced nanorod

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., Gupta Madhur, Kundalwal Shailesh I.   +2 more
doaj   +1 more source