Topological defects related to linear dichroism. Generation of vector-vortex beams
Sign Up to like & getrecommendations! Published in 2021 at "Optik"
DOI: 10.1016/j.ijleo.2021.166335
Abstract: Abstract We show that the effect of linear dichroism produces vector-vortex beams in axially inhomogeneous optically birefringent material samples. When the linear dichroism dominates (the corresponding parameter σ = 0), a vector-vortex beam is generated at the… read more here.
Keywords: topological defects; dichroism; vortex beams; vector vortex ... See more keywords
Topological defects and critical phenomena in two-dimensional frustrated helimagnets
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Magnetism and Magnetic Materials"
DOI: 10.1016/j.jmmm.2019.02.016
Abstract: Abstract Using a simple model of a frustrated helimagnet, the critical behavior is numerically investigated for planar or isotropic spins, and for cases of one or two chiral order parameters. The helical structure in this… read more here.
Keywords: topological defects; order; temperature; case ... See more keywords
Rotation of topological defects by trapped micro-rods in the nematic phase of a liquid crystal
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Molecular Liquids"
DOI: 10.1016/j.molliq.2017.12.063
Abstract: Abstract The dynamics of rod-shaped micro-particles, trapped within a topological defect, was investigated. It is demonstrated that there is an attractive interaction force between particle and defect, which is of the order of F ≈ 30 pN, pulling… read more here.
Keywords: topological defects; field; rotation; defects trapped ... See more keywords
From Chains to Monolayers : Nanoparticle Assembly Driven by Smectic Topological Defects.
Sign Up to like & getrecommendations! Published in 2020 at "Nano letters"
DOI: 10.1021/acs.nanolett.9b04347
Abstract: In this article, we show how advanced hierarchical structures of topological defects in the so-called smectic oily streaks can be used to sequentially transfer their geometrical features to gold nanospheres. We use two kinds of… read more here.
Keywords: topological defects; monolayers nanoparticle; nanoparticle assembly; dislocation cores ... See more keywords
Topological Defects and Unique Stacking Disorders in Honeycomb Layered Oxide K2Ni2TeO6 Nanomaterials: Implications for Rechargeable Batteries
Sign Up to like & getrecommendations! Published in 2021 at "ACS Applied Nano Materials"
DOI: 10.1021/acsanm.0c02601
Abstract: Endowed with a multitude of exquisite properties such as rich electrochemistry, superb topology, and eccentric electromagnetic phenomena, honeycomb layered oxides have risen to the top echelons of ... read more here.
Keywords: topological defects; stacking disorders; disorders honeycomb; unique stacking ... See more keywords
Stable Assemblies of Topological Defects in Nematic Orientational Order
Sign Up to like & getrecommendations! Published in 2022 at "ACS Omega"
DOI: 10.1021/acsomega.2c07174
Abstract: We considered general mechanisms enabling the stabilization of localized assemblies of topological defects (TDs). There is growing evidence that physical fields represent fundamental natural entities, and therefore these features are of interest to all branches… read more here.
Keywords: assemblies topological; physics; stable assemblies; topological defects ... See more keywords
Topological defects govern crack front motion and facet formation on broken surfaces.
Sign Up to like & getrecommendations! Published in 2018 at "Nature materials"
DOI: 10.1038/nmat5008
Abstract: Cracks develop intricate patterns on the surfaces that they create. As faceted fracture surfaces are commonly formed by slow tensile cracks in both crystalline and amorphous materials, facet formation and structure cannot reflect microscopic order.… read more here.
Keywords: topological defects; crack front; facet formation; front ... See more keywords
Definite photon deflections of topological defects in metasurfaces and symmetry-breaking phase transitions with material loss
Sign Up to like & getrecommendations! Published in 2018 at "Nature Communications"
DOI: 10.1038/s41467-018-06718-9
Abstract: Combination of topology and general relativity can lead to some profound and farsighted predictions. It is well known that symmetry breaking of the Higgs vacuum field in the early universe possibly induced topological defects in… read more here.
Keywords: topological defects; definite photon; symmetry breaking; photon deflections ... See more keywords
Properties of twisted topological defects in 2D nematic liquid crystals
Sign Up to like & getrecommendations! Published in 2021 at "Soft Matter"
DOI: 10.1039/d1sm00825k
Abstract: Topological defects are one of the most conspicuous features of liquid crystals. In two dimensional nematics, they have been shown to behave effectively as particles with both charge and orientation, which dictate their interactions. Here,… read more here.
Keywords: topological defects; liquid crystals; defects nematic; nematic liquid ... See more keywords
Understanding topological defects in fluidized dry active nematics.
Sign Up to like & getrecommendations! Published in 2022 at "Soft matter"
DOI: 10.1039/d1sm01405f
Abstract: Dense assemblies of self-propelling rods (SPRs) may exhibit fascinating collective behaviors and anomalous physical properties that are far away from equilibrium. Using large-scale Brownian dynamics simulations, we investigate the dynamics of disclination defects in 2D… read more here.
Keywords: defects fluidized; understanding topological; fluidized dry; dry active ... See more keywords
Topological defects in polycrystalline hexosomes from β-cyclodextrin fatty esters.
Sign Up to like & getrecommendations! Published in 2022 at "Soft matter"
DOI: 10.1039/d1sm01831k
Abstract: Colloidal nanoparticles were prepared by aqueous self-assembly of amphiphilic β-cyclodextrins (βCDs) acylated on their secondary face with C14 chains to a total degree of substitution of 7.0, via a thermolysin-catalyzed transesterification process. The small-angle X-ray… read more here.
Keywords: cyclodextrin fatty; hexosomes cyclodextrin; polycrystalline hexosomes; defects polycrystalline ... See more keywords