Results 31 to 40 of about 649,627 (304)

Concentration polarization, surface currents, and bulk advection in a microchannel [PDF]

open access: yes, 2014
We present a comprehensive analysis of salt transport and overlimiting currents in a microchannel during concentration polarization. We have carried out full numerical simulations of the coupled Poisson-Nernst-Planck-Stokes problem governing the ...
Bruus, Henrik, Nielsen, Christoffer P.
core   +2 more sources

Displacement current and surface flashover [PDF]

open access: yesApplied Physics Letters, 2007
High-voltage vacuum insulator failure is generally due to surface flashover rather than insulator bulk breakdown. Vacuum surface flashover is widely believed to be initiated by a secondary electron emission avalanche along the vacuum-insulator interface.
Harris, J. R.   +3 more
openaire   +1 more source

Ultrafast photocurrents at the surface of the three-dimensional topological insulator $\mathrm{Bi}_2\mathrm{Se}_3$ [PDF]

open access: yes, 2015
Topological insulators constitute a new and fascinating class of matter with insulating bulk yet metallic surfaces that host highly mobile charge carriers with spin-momentum locking.
Braun, Lukas   +8 more
core   +3 more sources

Assessment of Ocean Circulation Characteristics off the West Coast of Ireland Using HF Radar

open access: yesRemote Sensing, 2023
Research on coastal ocean circulation patterns over long time periods is significant for various marine endeavors: environmental protection, coastal engineering construction, and marine renewable energy extraction.
Lei Ren   +8 more
doaj   +1 more source

Determination of the critical current density in the d-wave superconductor YBCO under applied magnetic fields by nodal tunneling

open access: yes, 2004
We have studied nodal tunneling into YBa2Cu3O7-x (YBCO) films under magnetic fields. The films' orientation was such that the CuO2 planes were perpendicular to the surface with the a and b axis at 450 form the normal.
Alexander Gerber   +9 more
core   +1 more source

More Than 50 Years of Successful Continuous Temperature Section Measurements by the Global Expendable Bathythermograph Network, Its Integrability, Societal Benefits, and Future

open access: yesFrontiers in Marine Science, 2019
The first eXpendable BathyThermographs (XBTs) were deployed in the 1960s in the North Atlantic Ocean. In 1967 XBTs were deployed in operational mode to provide a continuous record of temperature profile data along repeated transects, now known as the ...
Gustavo J. Goni   +33 more
doaj   +1 more source

Wave-Filtered Surf Zone Circulation under High-Energy Waves Derived from Video-Based Optical Systems

open access: yesRemote Sensing, 2021
This paper examines the potential of an optical flow video-based technique to estimate wave-filtered surface currents in the nearshore where wave-breaking induced foam is present.
Isaac Rodríguez-Padilla   +6 more
doaj   +1 more source

North Atlantic Ocean surface currents [PDF]

open access: yesJournal of Geophysical Research: Oceans, 2003
Close to 1800 surface drifters are used to investigate the 15 m circulation of the North Atlantic Ocean. The data are used to describe structures of the average Eulerian circulation and of the associated eddy variability. The data resolve scales on the order of 50 km, which have hitherto not been systematically described, in particular, near shelf ...
Gilles Reverdin   +2 more
openaire   +1 more source

Coherence of Currents in Mesoscopic Cylinders

open access: yes, 1997
The persistent currents driven by the pure Aharonov-Bohm type magnetic field in mesoscopic normal metal or semiconducting cylinders are studied. A two-dimensional (2D) Fermi surfaces are characterized by four parameters.
Stebelski, M., Szopa, M., Zipper, E.
core   +1 more source

Very low threshold InGaAsP mesa laser [PDF]

open access: yes, 1983
Very low threshold currents InGaAsP/InP terrace mesa (T-ME) lasers with an unpassivated surface have been fabricated on semi-insulating (SI) InP substrates. Fabrication of the lasers involves a single-step liquid phase epitaxial (LPE) growth and a simple
Chen, T. R.   +6 more
core   +1 more source

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