Results 71 to 80 of about 376,528 (290)
A vortex dynamics perspective on stratospheric sudden warmings [PDF]
, 2009 A vortex dynamics approach is used to study the underlying mechanisms leading to polar vortex breakdown during stratospheric sudden warmings (SSWs).
Matthewman, N.J.
core
Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix
Advanced Materials, EarlyView.3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández +15 more
wiley +1 more source
A constrained vortex model with relevance to helicopter vortex ring state
, 2005 A planar model of a lifting surface descending into its own wake is constructed with the aim of demonstrating some underlying mechanisms of the ‘vortex ring’ state that may be enteredby a rotary wing aircraft during a vertical descent.
Sandham, N.D.
core +1 more source
Vortex filaments and quantum turbulence
Comptes Rendus. Mécanique, 2020 After giving my personal recollections of my collaboration in the early 90’s with Yves Couder on the subject of vortex filaments in classical turbulence I argue that current insights in quantum turbulence can be used to shed some light on the problem of ...
Brachet, Marc
doaj +1 more source
Advanced Materials, EarlyView.Gold‐stabilized copper suppresses hydroxide‐driven deactivation during anodic hydrogen evolution from furfural. Pairing this low‐potential anode with CO‐to‐ethylene electroreduction enables sub‐1 V operation at 400 mA cm−2, high single‐pass CO conversion, and co‐production of ethylene, furoic acid, and a separate hydrogen stream.
Sungjin Park +18 more
wiley +1 more source
SciPost PhysicsWe characterize the dynamical instability responsible for the breakdown of regular rows and necklaces of quantized vortices that appear at the interface between two superfluids in relative motion.
Matteo Caldara, Andrea Richaud, Massimo Capone, Pietro Massignan
doaj +1 more source
Advanced Materials, EarlyView.Heterostructure photodiode devices of p‐type WSe2 with n‐type NiPS3 constructs spectrally protected spin‐polarized photocurrents. The energy of the excitation photon serves as an independent control parameter for spin‐selective photocurrent generation. ABSTRACT Efficient generation and control of spin‐polarized currents in semiconductors remain central
Rajesh Kumar Yadav +8 more
wiley +1 more source
Elasticity‐Driven Periodic Polarization Patterns in a Chiral Ferroelectric Nematic Fluid
Advanced Materials, EarlyView.Chiral polar ferroelectric nematic fluids exhibit spontaneous formation of stripe, square, and hexagonal polarization textures under confinement. Controlled by thickness and anchoring, these patterns produce spatially modulated nonlinear optical responses.
Anej Sterle +11 more
wiley +1 more source
Numerical Investigations into the Origin of Tip Unsteadiness in a Transonic Compressor
Journal of Applied Fluid Mechanics, 2018 Three-dimensional numerical simulations are conducted to investigate the origin of flow unsteadiness and its associated unsteady flow phenomena in a transonic compressor rotor. The predicted results are compared with the available experimental data and a
G. An, Y. Wu, J. Lang, Z. Chen, B. Wang
doaj
EnergiesSwirl-stabilized combustors are central to gas turbine technology, where the swirl number critically determines flow structure and combustion stability. This work systematically investigates the isothermal flow in a dual-swirl combustor, focusing on two ...
Hafiz Ali Haider Sehole +5 more
doaj +1 more source