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Strain Gradients in Epitaxial Ferroelectrics [PDF]
Physical Review B, 2004 X-ray analysis of ferroelectric thin layers of Ba1/2Sr1/2TiO3 with different thickness reveals the presence of internal strain gradients across the film thickness and allows us to propose a functional form for the internal strain profile.
B. Noheda +8 more
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Switching a Polar Metal via Strain Gradients [PDF]
Physical Review Letters, 2021 Although rare, spontaneous breakdown of inversion symmetry sometimes occurs in a material which is metallic: these are commonly known as polar metals or ferroelectric metals. Their 'polarization', however, cannot be switched via an electric field, which limits the experimental control over band topology.
Roberto Rodríguez Aramayo +10 more
openalex +6 more sources
Strain-gradient mediated local conduction in strained bismuth ferrite films. [PDF]
Nat Commun, 2019 It has been recently shown that the strain gradient is able to separate the light-excited electron-hole pairs in semiconductors, but how it affects the photoelectric properties of the photo-active materials remains an open question.
Yang MM +4 more
europepmc +3 more sources
Dislocation microstructures and strain-gradient plasticity with one active slip plane [PDF]
, 2015 We study dislocation networks in the plane using the vectorial phase-field model introduced by Ortiz and coworkers, in the limit of small lattice spacing.
Conti, Sergio +2 more
core +2 more sources
Motion Driven by Strain Gradient Fields. [PDF]
Sci Rep, 2015 AbstractA new driving mechanism for direction-controlled motion of nano-scale objects is proposed, based on a model of stretching a graphene strip linked to a rigid base with linear springs of identical stiffness. We find that the potential energy difference induced by the strain gradient field in the graphene strip substrate can generate sufficient ...
Wang C, Chen S.
europepmc +4 more sources
Photonics, 2023 This paper addresses the challenge of strain measurement using distributed fiber-optic sensors based on Rayleigh scattering in the presence of fiber Bragg gratings (FBGs) with a reflectivity level of 70% within the optical fiber. The reflectivity of such
Valerii Matveenko, Grigorii Serovaev
doaj +1 more source
Strain-gradient effect on the crack tip dislocations density
Fracture and Structural Integrity, 2020 In this study, the influence of a material s plastic properties on the crack tip fields and dislocation density behavior is analytically and numerically analyzed using the conventional mechanism-based strain-gradient plasticity (CMSGP) theory established
Valery Shlyannikov +2 more
doaj +3 more sources
Energies, 2021 With the rapid development of society, the number of hydropower projects has increased. During the construction of these projects, due to excavation-induced unloading, the high sidewalls of the hydropower station are often subject to splitting failure ...
Fan Li, Qiangyong Zhang, Wen Xiang
doaj +1 more source
Applied Mechanics, 2021 In a flexoelectric sensing element using bending mode, estimation of the flexoelectric coefficient was investigated using 3-D stress/strain analysis and experiments.
Seol Ryung Kwon, Yongrae Roh
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Weak Solutions within the Gradient-Incomplete Strain-Gradient Elasticity [PDF]
Lobachevskii Journal of Mathematics, 2020 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Eremeyev V. A., dell'Isola F.
openaire +1 more source