Study of microcrack nucleation from a blocked twin with the wedge disclination model
Sign Up to like & getrecommendations! Published in 2017 at "Archive of Applied Mechanics"
DOI: 10.1007/s00419-016-1177-x
Abstract: Twinning is an important deformation mechanism of crystalline materials. A deformation twin blocked at the grain boundary may lead to microcrack nucleation and seriously deteriorate the mechanical properties of materials. In this paper, a theoretical… read more here.
Keywords: wedge; nucleation; model; disclination ... See more keywords
A revisit of the elastic fields of straight disclinations with new solutions for a rigid core
Sign Up to like & getrecommendations! Published in 2019 at "Acta Mechanica"
DOI: 10.1007/s00707-019-02411-0
Abstract: The classical solutions for straight disclinations in an infinite elastic solid have been obtained by integrating the results for disclination densities. In this paper, the equilibrium equations are solved directly for straight twist and wedge… read more here.
Keywords: straight disclinations; elastic fields; core; wedge disclination ... See more keywords
Artificial web of disclination lines in nematic liquid crystals
Sign Up to like & getrecommendations! Published in 2017 at "Nature Communications"
DOI: 10.1038/s41467-017-00548-x
Abstract: Disclinations are topological singularities of molecular arrangement in liquid crystals, which typically occur when the average orientation of molecules makes a π rotation along a fictitious closed loop taken inside the liquid crystal. Depending on… read more here.
Keywords: artificial web; disclination lines; web disclination; liquid crystals ... See more keywords
Geometry and mechanics of disclination lines in 3D nematic liquid crystals.
Sign Up to like & getrecommendations! Published in 2021 at "Soft matter"
DOI: 10.1039/d0sm01899f
Abstract: In 3D nematic liquid crystals, disclination lines have a range of geometric structures. Locally, they may resemble +1/2 or -1/2 defects in 2D nematic phases, or they may have 3D twist. Here, we analyze the… read more here.
Keywords: disclination lines; liquid crystals; geometry; disclination ... See more keywords
A computational study of nematic core structure and disclination interactions in elastically anisotropic nematics.
Sign Up to like & getrecommendations! Published in 2024 at "Soft matter"
DOI: 10.1039/d3sm01616a
Abstract: A singular potential method in the Q tensor order parameter representation of a nematic liquid crystal is used to study the equilibrium configuration of a disclination dipole. Unlike the well studied isotropic limit (the so… read more here.
Keywords: computational study; study; disclination; study nematic ... See more keywords
Properties of the ground state of electronic excitations in carbon-like nanocones
Sign Up to like & getrecommendations! Published in 2018 at "Low Temperature Physics"
DOI: 10.1063/1.5078524
Abstract: On the basis of the continuum model for long-wavelength charge carriers, originating in the tight-binding approximation for the nearest-neighbour interaction of atoms in the crystalline lattice, we consider quantum ground-state effects of electronic excitations in… read more here.
Keywords: state; state electronic; properties ground; electronic excitations ... See more keywords
Topological thermal crystalline insulators
Sign Up to like & getrecommendations! Published in 2025 at "Applied Physics Reviews"
DOI: 10.1063/5.0292394
Abstract: The disclination of a bulk crystalline lattice could host strongly localized states protected by quantized fractional charges, known as disclination states. Although disclination states of topological crystalline insulators have been extensively explored in wave systems,… read more here.
Keywords: crystalline insulators; disclination; thermal crystalline; crystalline ... See more keywords
Breaking planar liquid crystal anchoring to form controllable twist disclination loops
Sign Up to like & getrecommendations! Published in 2017 at "Molecular Crystals and Liquid Crystals"
DOI: 10.1080/15421406.2017.1287486
Abstract: ABSTRACT We have developed a new device called the dynamic cell, whereby the twist angle and cell thickness of a liquid crystal cell can be dynamically varied. For a twist angle larger than 90°, there… read more here.
Keywords: liquid crystal; disclination; breaking planar; twist ... See more keywords
Flow-induced disclination lines in nematic liquid crystals.
Sign Up to like & getrecommendations! Published in 2025 at "Physical review. E"
DOI: 10.1103/4lpd-x8b7
Abstract: We present a numerical study, based on the lattice Boltzmann method, of nematic liquid crystals flowing in microfluidic channels. We show that disclination lines are generated by the interaction between flow and anchoring conditions of… read more here.
Keywords: flow induced; liquid crystals; induced disclination; disclination lines ... See more keywords
Positive disclination in a thin elastic sheet with boundary.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review. E"
DOI: 10.1103/physreve.104.065002
Abstract: An isolated positive wedge disclination deforms an initially flat elastic sheet into a perfect cone when the sheet is of infinite extent and is elastically inextensible. The latter requires the elastic stretching strains to be… read more here.
Keywords: field; sheet; gaussian curvature; dirac singularity ... See more keywords
Observation of Topological p-Orbital Disclination States in Non-Euclidean Acoustic Metamaterials.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.154301
Abstract: Disclinations-topological defects ubiquitously existing in various materials-can reveal the intrinsic band topology of the hosting material through the bulk-disclination correspondence. In low-dimensional materials and nanostructure such as graphene and fullerenes, disclinations yield curved surfaces and… read more here.
Keywords: topology; disclination; physics; acoustic metamaterials ... See more keywords