Results 111 to 120 of about 196,589 (289)

Quantum algorithm for Bose-Einstein condensate quantum fluid dynamics

, 2009
The dynamics of vortex solitons in a BEC superfluid is studied. A quantum lattice-gas algorithm (localization-based quantum computation) is employed to examine the dynamical behavior of vortex soliton solutions of the Gross-Pitaevskii equation (phi^4 ...
Vahala, George, Vahala, Linda, Yepez, Jeffrey   +2 more
core   +1 more source

Charge‐Induced Morphing Gels for Bioinspired Actuation

Advanced Functional Materials, EarlyView.
This study introduces a novel electroactive actuation mechanism that enables the gel material to generate substantial and reversible shape‐changing while preserving topological and isochoric (volumetric) equivalence. The resultant morphing behaviors can mimic the movements of muscle‐driven organelles in nature, including cilia‐like beating and ...
Ciqun Xu, Saba Firouznia, Charl F. J. Faul, Majid Taghavi, Jonathan Rossiter   +4 more
wiley   +1 more source

Analytical Models Development of Compact Monopole Vortex Flows

Наукові вісті Національного технічного університету України "Київський політехнічний інститут", 2017
Background. Mathematical description of vortex flows as a part of basic fundamental concepts of continuum mechanics, hydro- and gas dynamics, thermal physics, theoretical basics of chemical engineering, geophysics, meteorology. Objective.
Pavlo V. Lukianov, Volodymyr M. Turick
doaj   +1 more source

Reducing Open‐Circuit Voltage Losses in Wide‐Bandgap FAPbBr3 Perovskite Solar Cells for Continuous Unassisted Light‐Driven Water Splitting

Advanced Functional Materials, EarlyView.
The combination of formamidinium thiocyanate and 1,3‐propane diammonium iodide for bulk and top‐surface passivation, and a ternary fullerene blend to improve energy band alignment, suppresses energy losses in wide‐bandgap FAPbBr3 perovskite solar cells.
Laura Bellini, Daniël Grosfeld, Bruno Branco, Guus J. W. Aalbers, Lana M. Kessels, Willemijn H. M. Remmerswaal, Nicolas Daub, Kunal Datta, Martijn M. Wienk, René A. J. Janssen   +9 more
wiley   +1 more source

Motion of vortices in inhomogeneous Bose-Einstein condensates

, 2018
We derive a general and exact equation of motion for a quantised vortex in an inhomogeneous two-dimensional Bose-Einstein condensate. This equation expresses the velocity of a vortex as a sum of local ambient density and phase gradients in the vicinity ...
Groszek, Andrew J., Helmerson, Kristian, Paganin, David M., Simula, Tapio P.   +3 more
core   +1 more source

Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis

Advanced Functional Materials, EarlyView.
An all‐optical method is presented for quantifying the density of boron vacancy spin defects in hexagonal boron nitride (hBN). By correlating Raman and photoluminescence signals with irradiation fluence, defect‐induced Raman modes are identified and established an relationship linking optical signatures to absolute defect densities. This enables direct
Atanu Patra, Paul Konrad, Andreas Sperlich, Timur Biktagirov, Wolf Gero Schmidt, Lesley Spencer, Igor Aharonovich, Sven Höfling, Vladimir Dyakonov   +8 more
wiley   +1 more source

Static and dynamic properties of vortex pairs in asymmetric nanomagnets

AIP Advances, 2016
Stacked spin-vortex pairs in magnetic multilayered nanopillars, with vertical separation between the vortices small compared to the vortex core size and pure magnetostatic coupling, exhibit spin dynamics absent in individual vortices.
B. C. Koop, M. Gruschke, T. Descamps, A. Bondarenko, B. A. Ivanov, V. Korenivski   +5 more
doaj   +1 more source

Vortex dynamics in NbTi films at high frequency and high DC magnetic fields. [PDF]

Sci Rep, 2023
Ghigo G, Torsello D, Gozzelino L, Fracasso M, Bartoli M, Pira C, Ford D, Marconato G, Fretto M, De Carlo I, Pompeo N, Silva E.   +11 more
europepmc   +1 more source

Quantum depinning of the magnetic vortex core in micron-size permalloy disks

, 2011
The vortex state, characterized by an in-plane closed flux domain structure and an out-of-plane magnetization at its centre (the vortex core), is one of the magnetic equilibria of thin soft ferromagnetic micron-size dots.
Hernandez, Joan Manel, Novosad, Valentyn, Tejada, Javier, Vélez, Saül, Zarzuela, Ricardo   +4 more
core   +1 more source

Coordinated Multi‐Component Gradient Engineering of Catalyst Layers for Advanced Polymer Electrolyte Fuel Cells

Advanced Functional Materials, EarlyView.
This work presents a continuous linear gradient catalyst layer design, a general strategy for improving membrane electrode assemblies across electrochemical devices. Fabricated via a dual‐nozzle spray coating method, the architecture controls the Pt/carbon ratio, ionomer content and ionomer type across the catalyst layer, enhancing proton conduction ...
Shangwei Zhou, Matt P. Tudball, Yiming Guo, Bia Brandt, Adam Zucconi, Wenjia Du, Junfu Bu, Daniel H. C. Wan, Jianuo Chen, Emanuele Magliocca, Feng Ryan Wang, Alexander J.E. Rettie, Patrick S. Grant, Paul R. Shearing, Rhodri Jervis, Thomas S. Miller   +15 more
wiley   +1 more source