Results 31 to 40 of about 685 (181)

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., Yurkov, Alexander S.   +1 more
openaire   +3 more sources

Fabrication and measurement of a flexoelectric micro-pyramid composite

AIP Advances, 2014
A fabrication method by combining precision mechanical dicing and wet etching was developed to prepare micro-pyramid structures based on (Ba0.67Sr0.33)TiO3 ceramics.
Wenbin Huang, Longlong Shu, Seol Ryung Kwon, Shujun Zhang, Fuh-Gwo Yuan, Xiaoning Jiang   +5 more
doaj   +1 more source

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

Thickness-Stretch Vibration of an Infinite Piezoelectric Plate with Flexoelectricity

Applied Sciences, 2022
In this paper, the thickness-stretch vibration of an infinite piezoelectric plate is studied, with consideration of the flexoelectric effect. The theoretical model developed herein is based on a one-dimensional formulation, with the assumption that the ...
Yan Guo, Bin Huang, Ji Wang
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

Localization of elastic waves in one-dimensional detuned phononic crystals with flexoelectric effect

International Journal of Smart and Nano Materials, 2022
Although forbidden band effect in perfectly periodic phononic crystals (PC) is very attractive, random disordered (i.e. detuning) phenomenon is inevitable in engineering processing, thus exploring the effect of detuning on the wave characteristics of PC ...
Cheng Shen, Yifan Kong, Tian Jian Lu, Shasha Yang   +3 more
doaj   +1 more source

Flexoelectric Effect in Biaxial Nematics

Acta Physica Polonica A, 2012
The flexoelectric (FE) effect provides a linear coupling between electric polarization and orientational deformation in liquid crystals. It influences many electrooptical phenomena and it is used in some bistable nematic devices. A statistical theory of dipole FE polarization in biaxial nematic liquid crystals is used to calculate temperature ...
openaire   +2 more sources

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

Advanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite, Lilia Huynh, Natascha Gray, Quintin N. Meier, Marta D. Rossell, Morgan Trassin   +5 more
wiley   +1 more source

Modeling the flexoelectric effect of an anisotropic dielectric nanoplate

Alexandria Engineering Journal, 2021
The static bending and the flexoelectric effect induced in an anisotropic dielectric nano-plate are studied in the frame of the simplified strain gradient elasticity theory (SSGT).
A.R. El Dhaba, M.E. Gabr
doaj   +1 more source

Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes

Advanced Functional Materials, EarlyView.
We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar, Fumikazu Murakami, Xing He, Konnor Koons, Xinyan Li, Bumseop Kim, Shihan Qin, Varun Harbola, Jochen Mannhart, Yimo Han, Ruijuan Xu, Shengxi Huang, Andrew M. Rappe, Hanyu Zhu   +13 more
wiley   +1 more source