Polarization patterning in ferroelectric nematic liquids via flexoelectric coupling
Nature Communications, 2023 The recently discovered ferroelectric nematic liquids incorporate to the functional combination of fluidity, processability and anisotropic optical properties of nematic liquids, an astonishing range of physical properties derived from the phase polarity.
Nerea Sebastián +10 more
doaj +8 more sources
Chiral polarization textures induced by the flexoelectric effect in ferroelectric nanocylinders [PDF]
Physical Review B, 2021 53 pages, 5 figures, supplementary materials on 31 ...
Anna N. Morozovska +5 more
openaire +3 more sources
Direct Observation of Huge Flexoelectric Polarization around Crack Tips [PDF]
Nano Letters, 2019 Flexoelectricity is especially relevant for nanoscale structures, and it is expected to be largest at the tip of cracks. We demonstrate the presence of a huge flexoelectric polarization at crack tips in SrTiO3 by direct observation with scanning transmission electron microscopy.
Hongguang Wang +6 more
core +5 more sources
Flexoelectric Effect of Ferroelectric Materials and Its Applications
Actuators, 2023 The flexoelectric effect, which exists in all dielectrics, is an electromechanical effect that arises due to the coupling of strain gradients (or electric field gradients) with electric polarization (or mechanical stress).
Dongxia Tian +3 more
doaj +2 more sources
Giant Flexoelectric Polarization in a Micromachined Ferroelectric Diaphragm
Advanced Functional Materials, 2012 AbstractThe coupling between dielectric polarization and strain gradient, known as flexoelectricity, becomes significantly large on the micro‐ and nanoscale. Here, it is shown that giant flexoelectric polarization can reverse remnant ferroelectric polarization in a bent Pb(Zr0.52Ti0.48)O3 (PZT) diaphragm fabricated by micromachining.
Wang, Zhihong +6 more
openaire +4 more sources
Flexoelectric polarization studies in bent-core nematic liquid crystals
Physical Review E, 2015 The flexoelectric polarization (Pf) of four bent-core nematic liquid crystals (LCs) has been measured using the pyroelectric effect. Hybrid aligned nematic cells are fabricated for measuring the pyroelectric response over the entire range of the nematic phase.
Sreenilayam, S. +5 more
openaire +8 more sources
Surface and flexoelectric polarization in a nematic liquid crystal 5CB
The European Physical Journal E, 2001 The temperature dependence of the surface polarization has been measured for both the planar and homeotropic orientation of a nematic liquid crystal at a solid substrate. A conventional liquid crystal 5CB, pure and doped with an azo-dye, was used in cells with controlled asymmetry for light absorption.
L.M. Blinov +5 more
openaire +2 more sources
Flexoelectric domain walls enable charge separation and transport in cubic perovskites [PDF]
Nature CommunicationsThe exceptional energy-harvesting efficiency of lead-halide perovskites arises from unusually long photocarrier diffusion lengths and recombination lifetimes that persist even in defect-rich, solution-grown samples.
Dmytro Rak +5 more
doaj +2 more sources
Flexoelectric Polarization in a Nematic Liquid Crystal Enhanced by Dopants with Different Molecular Shape Polarities. [PDF]
ACS Omega, 2022 Flexoelectricity may have an important impact on the switching properties of nematic and cholesteric liquid crystals due to the linear coupling between the flexoelectric polarization of the liquid crystal and the applied electric field. This coupling is the origin of the extraordinary electro-optic effect in cholesterics aligned in the uniform lying ...
Škarabot M +8 more
europepmc +6 more sources
Flexoelectricity-driven giant polarization in (Bi, Na)TiO3-based ferroelectric thin films [PDF]
Nature CommunicationsThis study demonstrates the use of oxygen vacancy-induced planar defects to significantly enhance electrical polarization through a local flexoelectric effect.
Yunlong Sun +15 more
doaj +2 more sources