Dual-wavelength rectangular and step-like soliton complexes, mixed with single solitons and soliton molecules, as well as a coexistence of soliton bundles and soliton rains, were observed in a mode-locked figure-of-ei...
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A new method for directly injecting plasma into the central cell of the Keda Mirror with AXisymmetricity(KMAX)device by using a compact toroid(CT)has been *** radial injection approach overcomes the limitations of con...
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A new method for directly injecting plasma into the central cell of the Keda Mirror with AXisymmetricity(KMAX)device by using a compact toroid(CT)has been *** radial injection approach overcomes the limitations of conventional plasma initiation methods,which typically rely on injecting plasma from one or both ends in a magnetic mirror *** radial injection method aims to produce high-density plasma and facilitate studies of mirror-confined *** paper presents its latest results and provides a detailed description of the injection system *** findings confirm the theoretical prediction that the injected plasma must achieve sufficient speed to penetrate the magnetic field and reach the chamber's *** observations show that,at medium voltage,the plasmoid may linger near the chamber edge,marking the first experimental identification of the conditions required for plasma penetration.
Vorticity is locally generated on a boundary at a rate measured by the boundary vorticity flux(BVF),which can be further decomposed into the sum of the orbital rotation and the generalized spin(specifically,the sum of...
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Vorticity is locally generated on a boundary at a rate measured by the boundary vorticity flux(BVF),which can be further decomposed into the sum of the orbital rotation and the generalized spin(specifically,the sum of shear and streaming vorticity)under the field *** an incompressible viscous flow interacting with a stationary wall,the full expressions of the boundary fluxes of the orbital rotation and the spin are derived,for the first time,to elucidate their boundary creation ***,these new findings are successfully extended to the study of the boundary enstrophy dynamics,as well as the Lyman vorticity dynamics as an alternative interpretation to the boundary vorticity ***,it is found that the boundary coupling of the longitudinal and transverse processes is only embodied in the boundary spin flux,which is definitely not responsible for the generation of the boundary orbital-rotation *** addition,the boundary fluxes of enstrophy are directly associated with the boundary source of the second principal invariant of the velocity gradient tensor(VGT)and the two quadratic forms representing the spin-geometry *** present exposition provides a new perspective and an additional dimension for understanding the vorticity dynamics on boundaries,which could be valuable in clarifying the formation mechanisms of near-wall coherent structures and flow noise at the fundamental level.
The rapid development of sustainable green energy,which often generates fluctuating electrical signals,has driven the demand for high-performance filter capacitors in alternating/direct current *** bulky aluminum elec...
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The rapid development of sustainable green energy,which often generates fluctuating electrical signals,has driven the demand for high-performance filter capacitors in alternating/direct current *** bulky aluminum electrolytic capacitors with electric double-layer capacitors(EDLCs)holds promise for electronics ***,EDLCs face a trade-off between charge storage ability and ion/electron transport ***,we demonstrate three-dimensional Y-branched carbon tube(3D-YCT)grids with a hierarchically porous structure as electrodes for line-filtering *** branching patterns and positions within the 3D-YCT are precisely tailored through the nanochannels inside anodic aluminum oxide *** integrated 3D Y-branched CT arrays provide unobstructed pathways for fast frequency response and extensive surfaces for high *** resulting 3D-YCT-based EDLC achieves a desirable specific areal capacitance(C_(A))of 3.6 mF cm^(-2)with a phase angle of-80°at 120 Hz,outperforming most reported line-filtering EDLCs and demonstrating excellent line-filtering *** findings offer valuable insights for constructing miniaturized filter capacitors.
In the present work, ligand-assisted zinc peroxide (ZnO2) nanoparticles (NPs) and doped ZnO2 NPs (manganese (Mn) and cobalt (Co)) were synthesized via the co-precipitation method and characterized through complementar...
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We introduce position-sensitive detectors (PSDs) based on femtosecond laser-structured sulfur-doped, nitrogen-doped, and S-N co-hyperdoped black silicon. In contrast to crystalline silicon, black silicon-based PSDs ex...
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Interacting impurity spins adsorbed on surfaces have been suggested as basic components for applications in quantum computation and spintronics. Such spins usually prefer a parallel or antiparallel configuration, but ...
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Interacting impurity spins adsorbed on surfaces have been suggested as basic components for applications in quantum computation and spintronics. Such spins usually prefer a parallel or antiparallel configuration, but weakly noncollinear alignments are possible due to the Dzyaloshinskii-Moriya interaction (DMI) that arises in the presence of relativistic spin-orbit coupling. Here, we show that an effective Dzyaloshinskii-Moriya-type interaction (DMTI) can emerge purely from superconducting correlations without any spin-orbit interaction. We give an analytical proof and provide a numerical study which shows that DMTI arises in mixed-parity superconductors solely from the superconducting pairing. Moreover, we show that the same effect can be realized in Josephson junctions between s-wave and p-wave superconductors, where a phase bias toggles the DMTI entirely on and off. These results enable a way to engineer spin textures using superconducting order.
This study focuses on coupled vibrations of rotating thin-walled composite beams subjected to hygrothermal *** the existing literature,many studies have been conducted on coupled bending-torsional vibration and resona...
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This study focuses on coupled vibrations of rotating thin-walled composite beams subjected to hygrothermal *** the existing literature,many studies have been conducted on coupled bending-torsional vibration and resonance in hygrothermal *** studies considered the coupled flapwise-edgewise and resonances of composite thin-walled *** this,the flapwise-edgewise coupling effects and resonant characteristics of rotating thin-walled composite beams in a hygrothermal environment are *** Rayleigh–Ritz method is used to solve the equations of the *** indicate that flapwise-edgewise coupling factors are essential for the vibration analysis of rectangular thin-walled *** ply angle and setting angle strongly affect the internal and external *** ply angles can significantly reduce the chances of primary internal and external resonances occurring when the permitted rotational speed is lower.
Cavity-assisted atom interferometry has been proposed for gravity measurement in the past decade due to its promising advantages such as low laser power consumption, high beam quality, and strong atom-photon interacti...
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Cavity-assisted atom interferometry has been proposed for gravity measurement in the past decade due to its promising advantages such as low laser power consumption, high beam quality, and strong atom-photon interactions. However, the previous cavity-related works have difficulties measuring the absolute gravitational acceleration g due to their limited cavity design and locking methods. We experimentally demonstrate a Raman-type absolute atom gravimeter assisted by a newly designed degenerate optical cavity. The gravimeter achieves a decent sensitivity of about 28.5(9)×10−8gHz−1/2 under our noisy laboratory conditions and without magnetic shielding of the atom interference area. The accuracy reaches 20 µGal within half an hour of continuous measurement. We also systematically measure and analyze the main noises affecting the g-measure sensitivity, indicating no physical obstacles to achieving higher sensitivity. Our cavity scheme is compatible and can be easily integrated with current free-space atom interferometers. By fully utilizing the cavity's advantages, it will benefit many areas in future fundamental research and fieldable applications.
Using the extended Huygens-Fresnel integral method, we have derived an analytical formula for the cross-spectral density matrix of a partially coherent radially polarized (PCRP) beam with elliptical vortex structure, ...
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