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2025 Roadmap on 3D Nano-magnetism.
J Phys Condens Matter
November 2024
Institute of Applied Physics, Vienna University of Technology, Wiedner Hauptstr. 8-10/134, Wien, 1040, AUSTRIA.
The transition from planar (2D) to three-dimensional (3D) magnetic nanostructures represents a significant advancement in both fundamental research and practical applications, offering vast potential for next-generation technologies like ultrahigh-density storage, memory, logic, and neuromorphic computing. Despite being a relatively new field, the emergence of 3D nanomagnetism presents numerous opportunities for innovation, prompting the creation of a comprehensive roadmap by leading international researchers. This roadmap aims to facilitate collaboration and interdisciplinary dialogue to address challenges in materials science, physics, engineering, and computing.
View Article and Find Full Text PDFImproved electrical and thermoelectric properties of electrodeposited Bi Sb nanowire networks by thermal annealing.
Nanoscale Adv
October 2024
Institute of Condensed Matter and Nanosciences (ICMN), Université catholique de Louvain (UCLouvain) Louvain-la-Neuve B-1348 Belgium
Arrays of thermoelectric nanowires embedded in organic films are attracting increasing interest to fabricate flexible thermoelectric devices with adjustable dimensions and complex shapes, useful for sustainable power sources of portable electronic devices and wireless sensor networks. Here, we report the electrochemical synthesis of interconnected bismuth-antimony (Bi Sb ) nanowires (with 0.06 < < 0.
View Article and Find Full Text PDFHighly stable and active catalyst in fuel cells through surface atomic ordering.
Sci Adv
October 2024
State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
Article Synopsis
- Shape-controlled alloy nanoparticle catalysts improve performance in oxygen reduction reactions (ORR) in liquid half-cells, but face challenges in fuel cell applications due to harsher operating conditions.* -
- A new strategy was developed to limit atomic diffusion in surface layers, allowing for the selective transformation of platinum-iron nanowires into stable intermetallic structures at low temperatures.* -
- This surface engineering approach enhances membrane electrode assembly (MEA) stability by reducing iron loss by 50% while maintaining high catalytic activity, showing promise for practical fuel cell applications with shape-controlled catalysts.*
Trimethylsilane Plasma-Nanocoated Silver Nanowires for Improved Stability.
Materials (Basel)
July 2024
Department of Mechanical and Aerospace Engineering, University of Missouri, Lafferre Hall, Columbia, MO 65211, USA.
The objective of this study was to evaluate the effectiveness of trimethylsilane (TMS) plasma nanocoatings in protecting silver nanowires (AgNWs) from degradation and thus to improve their stability. TMS plasma nanocoatings at various thicknesses were deposited onto AgNWs that were prepared on three different substrates, including glass, porous styrene-ethylene-butadiene-styrene (SEBS), and poly-L-lactic acid (PLLA). The experimental results showed that the application of TMS plasma nanocoatings to AgNWs induced little increase, up to ~25%, in their electrical resistance but effectively protected them from degradation.
View Article and Find Full Text PDFSelective-Area Epitaxy of Bulk-Insulating (BiSb)Te Films and Nanowires by Molecular Beam Epitaxy.
ACS Appl Mater Interfaces
August 2024
Physics Institute II, University of Cologne, D-50937 Köln, Germany.
Article Synopsis
- Selective-area epitaxy (SAE) is a technique used to create specific shapes of thin films on pre-patterned substrates, allowing for precise control over the growth of materials.
- This study successfully demonstrates the growth of Hall-bars and nanowires from bulk-insulating topological insulators (TIs) using SAE, which had not been reported before in this context.
- The newly created TI nanostructures exhibit excellent transport properties and quantum behaviors, presenting opportunities for scalable fabrication of advanced topological devices.
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