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日前，Springer出版集团出版了由北京理工大学光电学院付时尧长聘副教授、高春清教授共同撰写的学术专著Optical Vortex Beams,Fundamentals and Techniques。该专著全面介绍了涡旋光场调控的理论与技术基础，同时介绍了该团队在涡旋光场调控方面的相关研究工作。该专著受Springer邀请撰写，是Springer系列图书Advances in Optics an...
Breakthrough in particle control creates special half-vortex rotation
creates special half-vortex rotation
2015/3/18
Researchers at the Universities of Strathclyde and Pittsburgh, and Princeton University, conducted a test in which they were able to arrange the particles into a ‘ring geometry’ form in a solid-state ...
Vortex-phonon interaction
Quantization vortex superfluids vortex dynamics launch elementary excitation inelastic scattering acoustic radiation fluid turbulence
2014/12/20
Kelvin waves—helical waves on quantized vortex lines—are the normal modes of vortices in a superfluid. At zero temperature, the only dissipative channel of vortex dynamics is phonon emission. Starting...
Vortex-phonon interaction in the Kosterlitz-Thouless theory
Variables whirlpool rotating wave nonphysical small vortex
2014/12/20
The “canonical” variables of the Kosterlitz-Thouless theory—fields Φ0(r) and φ(r), generally believed to stand for vortices and phonons (or their XY equivalents, like spin waves, etc.) turn out to be ...
Effects of boundaries and density inhomogeneity on states of vortex matter in Bose-Einstein condensates at finite temperature
Quantum vortices 3 d eddy current condensate vortex entanglement
2014/12/19
Most of the literature on quantum vortices predicting various states of vortex matter in three dimensions at finite temperatures in quantum fluids is based on the assumption of an extended and homogen...
Unusual States of Vortex Matter in Mixtures of Bose-Einstein Condensates on Rotating Optical Lattices
Superfluid parameter space vortex lattice parameters the mixture of condensed matter optical lattice
2014/12/19
In a single-component superfluid under rotation a broken symmetry in the order parameter space results in a broken translational symmetry in real space: a vortex lattice. If translational symmetry is ...
Hidden vortex lattices in a thermally paired superfluid
Rotation statistical mechanics model of superfluid vortex lattice vortex lattice
2014/12/19
We study the evolution of rotational response of a statistical mechanical model of two-component superfluid with a nondissipative drag interaction as the system undergoes a transition into a paired su...
Preemptive vortex-loop proliferation in multicomponent interacting Bose-Einstein condensates
Parameter analysis the monte carlo calculation complex superfluid condensed matter
2014/12/19
We use analytical arguments and large-scale Monte Carlo calculations to investigate the nature of the phase transitions between distinct complex superfluid phases in a two-component Bose-Einstein cond...
Geometric symmetries in superfluid vortex dynamics
Quantization vortex line fluid dynamics fluid flow vortex dynamics
2014/12/18
Dynamics of quantized vortex lines in a superfluid feature symmetries associated with the geometric character of the complex-valued field, w(z)=x(z)+iy(z), describing the instant shape of the line. Al...
Focusing properties of the double-vortex beams through a high numerical-aperture objective
Focusing properties double-vortex beams high numerical-aperture objective
2013/7/3
Focusing properties of the double-vortex beams through a high numerical-aperture objective.
On Core and Curvature Corrections used in Straight-Line Vortex Filament Methods
Core and Curvature Corrections Straight-Line Vortex Filament Methods Computational Physics
2012/4/24
The convergence characteristics of two viscous core corrections as used in straight-line segmentation methods are rigorously analysed. These are \emph{curvature corrections} that account for the induc...
Alternate powers in Serrin's swirling vortex solutions
Serrin’s swirling vortex Navier–Stokes equations Euler equations Cai’s power law tornado modeling vortex breakdown
2012/4/23
We consider a modification of the fluid flow model for a swirling vortex developed by J. Serrin, where velocity decreases as the reciprocal of the distance from the vortex axis. Recent studies, based ...
Phase locking dynamics of dipolarly coupled vortex-based spin transfer oscillators
Phase locking dynamics dipolarly coupled vortex-based spin transfer oscillators
2012/2/27
Phase locking dynamics of dipolarly coupled vortices excited by spin-polarized current in two identical nanopillars is studied as a function of the interpillar distance L. Numerical study and analytic...
Propagation properties of stochastic electromagnetic double-vortex beams in turbulent atmosphere
double-vortex beams coherent polarization turbulent atmosphere
2013/7/3
Based on the extended Huygens–Fresnel principle, we study the propagation properties of stochastic electro-magnetic double-vortex beams in turbulent atmosphere. The result shows that the spreading of ...
Optical Torque Exerted on a Rotator under Illumination of a Vortex Beam
Optical Torque Exerted Rotator Illumination Vortex Beam
2013/7/3
We investigate the torque on a specially shaped rotator produced by a vortex beam. The formulas for the torque alongx, yandzdirections are derived, and numerically calculation is performed. It is foun...