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Targeted Writing and Deleting of Magnetic Skyrmions in Two-Terminal Nanowire Devices
Controllable writing and deleting of nanoscale magnetic skyrmions are key requirements for their use as information carriers for next-generation memory and computing technologies. While several schemes have been proposed, they require complex fabrication techniques or precisely tailored electrical inputs, which limits their long-term scalability. In this work, we demonstrate an alternative approach for writing and deleting skyrmions using conventional electrical pulses within a simple, two-terminal wire geometry. X-ray microscopy experiments and micromagnetic simulations establish the observed skyrmion creation and annihilation as arising from Joule heating and Oersted field effects of the current pulses, respectively. The unique characteristics of these writing and deleting schemes, such as spatial and temporal selectivity, together with the simplicity of the two-terminal device architecture, provide a flexible and scalable route to the viable applications of skyrmions.
Highly Dispersive Cerium Atoms on Carbon Nanowires as Oxygen Reduction Reaction Electrocatalysts for
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Resonance-Amplified Terahertz Near-Field Spectroscopy of a Single Nanowire
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Oxide Decomposition and Sn Surface Segregation on Core/Shell Ge/GeSn Nanowires
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Platinum–Nickel Nanowires with Improved Hydrogen Evolution Performance in Anion Exchange Membrane-Based Electrolysis
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Self-Sustainable Lattice Strains of Morphology-Tuned Nanowires in Electrocatalysis
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Red Light-Powered Nanowire Photochemical Diodes for Unassisted Hydrogen Evolution and Glycerol Valorization
Artificial photosynthesis via unassisted photochemical diodes is a promising approach for generating solar fuels. However, photoelectrochemical systems often degrade under solar diurnal cycling, and reliance on solar insolation exacerbates land use. Narrow-band LED illumination offers continuous and constant operation, enabling the vertical integration of stable photochemical diodes. In this study, 740 nm red light was investigated as the illumination source for silicon-based photochemical diodes integrating the hydrogen evolution reaction with the glycerol oxidation reaction (GOR), where replacing the oxygen evolution reaction with GOR increases attainable bias-free photocurrents. Increasing photovoltages, saturation current densities, and power conversion efficiencies were observed with increasing incident red light intensity. Under a red light intensity of 60 mW cm –2 , these systems are stable above 7.5 mA cm –2 for 6 days with periodic electrolyte refreshing. In conclusion, these results offer a promising prospect for red light-powered photochemical diodes that integrate other significant reduction reactions, such as CO 2 reduction.
Optical Nonlinearity in Silicon Nanowires Enabled by Bound States in the Continuum
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Strategy for Addressing the Low Quantum Efficiency of Nanowire Photodetectors
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A new class of acene-based polymers: nanowires made from linear-ladder hydroxy-substituted acene quinones
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Self-Induced Ultrafast Electron-Hole-Plasma Temperature Oscillations in Nanowire Lasers
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Junction-free microwave two-mode radiation from a kinetic inductance nanowire
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