The planar-view high-magnification HAADF-STEM images and polar map (b) showing different polar states: vortex, anti-vortex and center-divergent polar solitons (marked by circles) and polar vortices (marked by boxes). Scale bar, 1 nm. c, The sketch maps of anti-vortex, vortex and center...
Although vortex structures of aurora, called auroral spirals, often appear to evolve from arc-like auroras to a train of two or more spirals of diameter ~50 km in the Earth’s nightside auroral oval (about 65–75° magnetic latitude)7,8, they are not unusually intense and do not have...
(1994) indicates that the FAC enters the polar ionosphere in the post noon sector during the PI stage. It is expected that a convection vortex induced by downward FAC should be observed in the post-noon sector. The dusk side polar ionospheric convection pattern is shown in Figure6as a ...
Govinden, V. et al. Ferroelectric solitons crafted in epitaxial bismuth ferrite superlattices.Nat. Commun.14, 4178 (2023). ADSGoogle Scholar Geng, W. R. et al. Rhombohedral–orthorhombic ferroelectric morphotropic phase boundary associated with a polar vortex in BiFeO3films.ACS Nano12, 11098–1110...
Prior to instrument analysis the vials were removed from the freezer, homogenized (Vortex V-1 plus Personal Vortex, Biosan) and weighed. Samples from each vial were diluted with UPW and spiked with two isotopically labelled internal standards mixtures (plant protection products and pharmaceuticals) (...
map (Fig.S9), thePopat the cores of vortices (vorticity of +1) and antivortices (vorticity of −1) are plausibly antiparallel. On the other hand,Popappears at vanishing points ofPip, implying thePopat vortex cores are not fully surrounded byPopof the opposite direction (Fig.S10). From...
The in-plane displacement direction maps clearly reveal that unidirectional polar order dominates in the top half of the particle while a counterclockwise vortex exists in the bottom half. This corresponds to the theoretically predicted polar-toroidal multiorder (PTMO) state, in which the polar and ...
containing a skyrmion.eThe three-dimensional presentation of the polarization vectors.fThe top view of the polarization vectors of the PTO layer showing the vortex-antivortex pattern.gThe cross-sectional view of the polarization vectors of the front layer ine. The polarization vectors with positive...
map of horizontal wind direction and speed at an altitude of 10 m on all the radiosonde launches, including in the JPCZ area in the left bottom side of the figure. Over the area off the coast of Hokkaido, a cyclonic vortex-like structure is observed. This is probably a polar low, ...
vortex to wave and finally polar down state was recorded. The three columnar sub-panels are schematic diagrams, experimental mappings of polar vector and phase-field simulations, respectively.eThe out-of-plane strain (εyy) map of the PTO layer under different external bias, which remain almost...