Results 31 to 40 of about 1,274 (207)

Geometrical Nonlinearity for a Timoshenko Beam with Flexoelectricity

Nanomaterials, 2021
The Timoshenko beam model is applied to the analysis of the flexoelectric effect for a cantilever beam under large deformations. The geometric nonlinearity with von Kármán strains is considered.
Miroslav Repka, Jan Sladek, Vladimir Sladek   +2 more
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, Catalan Gustau, Tagantsev Alexander K.   +2 more
openaire   +3 more sources

Flexoelectricity in a metal/ferroelectric/semiconductor heterostructure

AIP Advances, 2018
The flexoelectricity in a 100 nm-thick BaTiO3 (BTO) thin film based metal/ferroelectric insulator/semiconductor (MFS) heterostructure was reported in this letter.
Shujin Huang, Hei-Man Yau, Hyeonggeun Yu, Lu Qi, Franky So, Ji-Yan Dai, Xiaoning Jiang   +6 more
doaj   +1 more source

Flexoelectricity at fractal rough surfaces

, 2023
This study quantifies the role of surface roughness on interfacial flexoelectricity under normal compression and oscillation by examining a series of 3D printed surfaces with diverse roughness features.
Chongpu Zhai, Kaiyuan Liu, 宋恒旭, Zhang, Shuwen, Song, Hengxu, Shuwen Zhang, Zhai, Chongpu, Hengxu Song, Liu, Kaiyuan, Wei, Deheng, Deheng Wei, Ji, Hui, Xu, Minglong, Hui Ji, Minglong Xu   +14 more
core   +1 more source

Engineering of atomic-scale flexoelectricity at grain boundaries

Nature Communications, 2022
Large strain gradient is crucial for flexoelectricity. Here, the authors reveal the generality and tunability of large strain gradients at grain boundaries in oxides, explaining the possible effects on the electrical activities of ceramics.
Mei Wu, Xiaowei Zhang, Xiaomei Li, Ke Qu, Yuanwei Sun, Bo Han, Ruixue Zhu, Xiaoyue Gao, Jingmin Zhang, Kaihui Liu, Xuedong Bai, Xin-Zheng Li, Peng Gao   +12 more
doaj   +1 more source

Flexoelectricity in bones

, 2021
Bones generate electricity under pressure, and this electromechanical behavior is thought to be essential for bone's self-repair and remodeling properties.
Catalan, Gustau, Damjanovic, Dragan, Abdollahi, Amir, Vásquez Sancho, Fabián   +3 more
core  

A flexoelectric microelectromechanical system on silicon [PDF]

Nature Nanotechnology, 2015
Flexoelectricity allows a dielectric material to polarize in response to a mechanical bending moment and, conversely, to bend in response to an electric field. Compared with piezoelectricity, flexoelectricity is a weak effect of little practical significance in bulk materials. However, the roles can be reversed at the nanoscale.
Bhaskar, Umesh Kumar, Banerjee, Nirupam, Abdollahi Hosnijeh, Amir, Wang, Zhen, Scholm, Darrell G., Rijnders, Guus, Catalan, Gustau   +6 more
openaire   +7 more sources

Flexoelectricity in oxide thin films

Journal of Advanced Dielectrics
Flexoelectric effect describes the electromechanical coupling between the strain gradient and its internal polarization in all dielectrics. Despite this universality, the resulting flexoelectric field remains small at the macroscopic level.
Guoyang Shen, Renhong Liang, Zhiguo Wang, Zhiyong Liu, Longlong Shu   +4 more
doaj   +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

Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes

Advanced Materials, EarlyView.
Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro, Hugo Aramberri, Víctor Rouco, Gabriel Sánchez‐Santolino, Mariona Cabero, Fernando Gallego, David Sánchez‐Manzano, José M. González‐Calbet, Federico Mompeán, Mar García‐Hernández, Alberto Rivera‐Calzada, Jorge Íñiguez‐González, Carlos León, Jacobo Santamaría   +13 more
wiley   +1 more source