Results 51 to 60 of about 1,489 (205)
Piezoelectric Mimicry of Flexoelectricity
, 2021 The origin of "giant" flexoelectricity, orders of magnitude larger than theoretically predicted, yet frequently observed, is under intense scrutiny. There is mounting evidence correlating giant flexoelectriclike effects with parasitic piezoelectricity ...
Catalan, Gustau +2 more
core
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
Polarization Dynamics in Ferroelectrics: Insights Enabled by Machine Learning Molecular Dynamics
Advanced Science, EarlyView.Machine learning molecular dynamics is presented as a route to capture polarization switching, domain wall kinetics, topological polar textures, and polar mechanical coupling beyond the limits of conventional atomistic methods. This Perspective surveys recent progress and identifies key methodological directions, including long‐range electrostatics ...
Dongyu Bai +3 more
wiley +1 more source
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 +6 more
openaire +6 more sources
Flexoelectric Suppression of Interfacial Carrier Loss in BaTiO3 Thin‐Film Bulk Photovoltaic Systems
Advanced Science, EarlyView.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 ...
Minwoo Jang +5 more
wiley +1 more source
Hidden symmetry of flexoelectric coupling [PDF]
Physical Review B, 2018 Considering the importance of the flexoelectric coupling for the physical understanding of the gradient-driven couplings in mesoscale and nanoscale solids, one has to determine its full symmetry and numerical values. The totality of available experimental and theoretical information about the flexocoupling tensor symmetry (specifically the amount of ...
Eliseev, Eugene A., Morozovska, Anna N.
openaire +2 more sources
Flexoelectricity in Nematics Confined to Cylindrical Geometry [PDF]
, 2015 External fields act on the order parameter, the tensor which is describing the local order of molecules, driving the liquid crystal cells to their final configuration.
Sparavigna, Amelia Carolina
core +1 more source
Advanced Electronic Materials, EarlyView.The structural characteristics and resonant mechanical behavior of suspended microbridges comprised of single‐crystalline SrTiO3 that has been grown on silicon are presented. Due to differences in thermal expansion between the SrTiO3 and silicon, we find that the resonant frequencies of the microbridges are not only enhanced, but also hyper‐sensitive ...
Deepa Guragain +8 more
wiley +1 more source
Relaxational behavior of flexoelectricity
, 2017 We give what we believe to be the first clear evidence of the Meyer’s contribution to ...
J.-P. Marcerou, J. Prost
core +1 more source
Frequency dispersion of flexoelectricity in PMN-PT single crystal
AIP Advances, 2017 The mechanism of the recent discovered enhanced flexoelectricity in perovskites has brought about numerous controversies which still remain unclear. In this paper, we employed relaxor 0.68Pb(Mg2/3Nb1/3)O3 -0.32PbTiO3 (PMN-PT) single crystals for study ...
Longlong Shu +6 more
doaj +1 more source