Results 41 to 50 of about 66,556 (207)

Quantum transport properties of two-dimensional electron gases under high magnetic fields

open access: yes, 2007
We study quantum transport properties of two-dimensional electron gases under high perpendicular magnetic fields. For this purpose, we reformulate the high-field expansion, usually done in the operatorial language of the guiding-center coordinates, in ...
Champel, Thierry, Florens, Serge
core   +4 more sources

Polarization multiplexing and bifocal optical vortex metalens

open access: yesResults in Physics, 2020
In this article, we demonstrate several optical vortex metalens (OVMs) based on the Pancharatnam–Berry (PB) geometric phase concept utilizing silicon nanobricks.
Wei Wang   +4 more
doaj   +1 more source

Imprinting spiral Higgs waves onto superconductors with vortex beams

open access: yesPhysical Review Research, 2023
A vortex beam, akin to a quantized vortex in superfluids, possesses inherent orbital angular momentum (OAM), resulting in the propagation of a spiral-shaped wavefront.
Takeshi Mizushima, Masahiro Sato
doaj   +1 more source

Motion of Vacancies in a Pinned Vortex Lattice: Origin of the Hall Anomaly

open access: yes, 1998
Physical arguments are presented to show that the Hall anomaly is an effect of the vortex many-body correlation rather than that of an individual vortex. Quantitatively, the characteristic energy scale in the problem, the vortex vacancy formation energy,
  +14 more
core   +2 more sources

The Study of 3D Simulation on Heat Transfer Enhancement on Fin Tube Heat Exchanger Using Delta Wing and Winglet Vortex Generators

open access: yesInternational Journal of Applied Sciences and Smart Technologies
The vortex generator is one of the methods to improve heat transfer augmentation on flow characteristics in the air side of the fin and tube heat exchanger.
Stefan Mardikus   +8 more
doaj   +1 more source

SIMULATION OF WAKE VORTEX AIRCRAFT IN GROUND EFFECT [PDF]

open access: yesINCAS Bulletin, 2011
The problem developed in this paper is encountered in airplane aerodynamics and concernsthe influence of long life longitudinal wake vortices generated by wing tips or by external obstaclessuch as reactors or landing gears.
Pamfil ŞOMOIAG   +3 more
doaj   +1 more source

Experimental Study on Heat Transfer Characteristics of the Delta Winglets with V-shaped Array

open access: yesZhileng xuebao, 2015
In the range of Re = 4800~10200, the experiment was made to investigate the heat transfer characteristics of two rows of the delta winglets arrayed in V shape at the back side of the round tube in the rectangular channel.
Tian Liting   +4 more
doaj  

Vortices in a rotating BEC under extreme elongation

open access: yes, 2005
We investigate a non-axisymmetric rotating BEC in a limit of rotation frequency for which the BEC transforms into a quasi-one-dimensional system. We compute the vortex lattice wavefunction by minimizing the Gross-Pitaevskii energy functional in the ...
A. A. Abrikosov   +6 more
core   +1 more source

Longitudinal and transverse forces on a vortex in superfluid $^4$He

open access: yes, 1999
We examine the transverse and longitudinal components of the drag force upon a straight vortex line due to the scattering of liquid $^4$He excitations. For this purpose, we consider a recently proposed Hamiltonian that describes the dissipative motion of
  +13 more
core   +1 more source

Investigation of the regularities of vortical flows in a cyclone-bed chamber

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2018
Experimental investigation of the radial distributions of tangential and longitudinal velocities, total and static pressures in the vortex zone of a cyclone-bed chamber of diameter 0.21 m has been carried out.
E. A. Pitsukha   +2 more
doaj   +1 more source

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