Results 11 to 20 of about 2,249 (157)

Supercurrents and Tunneling in Massive Many‐Vortex Necklaces and Star‐Lattices

open access: yesAnnalen der Physik
AbstractRecently, cold atoms mixtures have attracted broad interest due to their novel and exotic quantum effects with respect to single‐component systems. In this study, the focus is on massive many‐vortex states and their dynamics. Vortex configurations characterized by the same discrete rotational symmetry are investigated when confined within ...
Alice Bellettini, Vittorio Penna
openaire   +3 more sources

Self-Assembled Polypseudorotaxanes Crosslinked by Dynamic Disulfide Bonds as Modular Functionalization for Thiophilic Metal Nanoparticles. [PDF]

open access: yesAngew Chem Int Ed Engl
Self‐assembled thiol‐rich polypseudorotaxanes with high modularity were developed via a “one‐pot” preparation through the threading of thiolated α‐cyclodextrins on polymers and subsequent oxidation of thiols into disulfide bonds. This dynamic motif was used as a functionalization platform for thiophilic metal nanoparticles, either tethering them to a ...
Xu X   +12 more
europepmc   +3 more sources

Development of circular cylinder blade wind turbine driven by longitudinal vortex

open access: yesNihon Kikai Gakkai ronbunshu, 2021
It is known that the longitudinal vortex alternately and periodically forms diagonally backward of the upstream cylinder of the cruciform system consisted of the upstream cylinder and the downstream strip-plate and causes the strong periodic lift force ...
Kasumi SAKAMOTO   +3 more
doaj   +1 more source

Effect of blade tip on torque characteristics of circular cylinder blade wind turbine driven by longitudinal vortex

open access: yesNihon Kikai Gakkai ronbunshu, 2022
In a circular cylinder blade wind turbine driven by a longitudinal vortex, the torque characteristics of the turbine are greatly affected by the flow field at the blade tip. In general, wind turbines reduce drag by making the blade tips thinner. However,
Shota NAKADA   +2 more
doaj   +1 more source

Observation of Self-Patterned Defect Formation in Atomic Superfluids–from Ring Dark Solitons to Vortex Dipole Necklaces

open access: yesPhysical Review X, 2023
Unveiling nonequilibrium dynamics of solitonic and topological defect structures in a multidimensional nonlinear medium is a current frontier across diverse fields. One of the quintessential objects is a ring dark soliton (RDS), whose dynamics are expected to display remarkable interplay between symmetry and self-patterned topological defect formation ...
Hikaru Tamura   +2 more
openaire   +4 more sources

Making ghost vortices visible in two-component Bose-Einstein condensates

open access: yesPhysical Review Research, 2023
Ghost vortices constitute an elusive class of topological excitations in quantum fluids since the relevant phase singularities fall within regions where the superfluid density is almost zero.
Andrii Chaika   +2 more
doaj   +1 more source

Spin-2 Bose–Einstein condensates in an annular trap with spin–orbit coupling

open access: yesResults in Physics, 2020
We study the ground-state phases of spin–orbit coupled spin-2 Bose–Einstein condensates in a two-dimensional concentrically coupled annular trap with the attractive and repulsive spin-exchange interactions, respectively.
Yue-Qing Li, Yun-Xia Sui, Ji-Guo Wang
doaj   +1 more source

Necklace-ring vector solitons [PDF]

open access: yes, 2015
We introduce novel classes of optical vector solitons that consist of incoherently coupled self-trapped “necklace” beams carrying zero, integer, and even fractional angular momentum.
Desyatnikov, Anton S, Kivshar, Yuri
core   +1 more source

Dynamics of circular arrangements of vorticity in two dimensions [PDF]

open access: yes, 2016
The merger of two like-signed vortices is a well-studied problem, but in a turbulent flow, we may often have more than two like-signed vortices interacting.
Govindarajan, Rama   +3 more
core   +3 more sources

Influence of Cross-Sectional Configuration on the Longitudinal Vortex Excitation of the Upstream Cylinder in Cruciform Two-Cylinder System

open access: yesJournal of Fluid Science and Technology, 2006
In earlier works by the present authors, it was shown that a large cross-flow excitation is induced to a circular cylinder by setting another cylinder downstream in a cruciform arrangement with a certain gap between them, caused by longitudinal vortices ...
Naoto KATO   +3 more
doaj   +1 more source

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