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Updates every hour. Last Updated: 21-Aug-2025 22:11 ET (22-Aug-2025 02:11 GMT/UTC)
High-entropy carbides (HECs) exhibit exceptional mechanical properties and ultrahigh thermal stability, making them promising materials for high-temperature extreme environments, such as hypersonic vehicles and nuclear reactors. The fabrication of complex-shaped components for these applications involves the HECs joints and requires these joints capable of withstanding extreme service temperatures. However, developing such joints presents significant challenges: the stability and sluggish diffusion characteristics of HECs hinder solid-phase diffusion, while using liquid alloys at bonding interfaces typically introduces low-melting-point compounds that compromise thermal durability. Consequently, developing HEC joints with superior high-temperature endurance remains a critical challenge in materials engineering.
MXene, as a rising star among two-dimensional electromagnetic wave materials, faces urgent challenges in addressing its self-stacking issue and regulating its conductivity. Herein, a micro-macro collaborative design strategy was proposed to regulate heterogeneous interface engineering in MXene-based absorbers. Biomass-based cotton was introduced as three-dimensional (3D) framework for constructing a porous structure, TiO2 was in-situ generated and nitrogen atom was doped on Ti3C2Tx MXene to regulate its dielectric properties, a 3D N-doped carbon fiber/MXene/TiO2 (N-CMT) nano-aerogel was successful constructed. The synergistic effects of diverse components and structural designs, porous frameworks and TiO2 lattice contraction can significantly adjust the density of the conductive network and create abundant heterogeneous interfaces, as well as the lattice defects induced by nitrogen atom doping can enhance polarization loss, ultimately leading to the excellent microwave absorption performance of 3D N-CMT nano-aerogels. The optimized N-CMT 30% aerogel exhibited a minimum reflection loss of −72.56 dB and an effective absorption bandwidth of 6.92 GHz at 2.23 mm. These results demonstrate that 3D N-CMT nano-aerogel relying on interface engineering design exhibits significant potential in the field of electromagnetic protection, providing an important reference for future efficient absorbers.
Although the Navier-Stokes equations are the foundation of modern hydrodynamics, adopting them to quantum systems has so far been a major challenge. Researchers from the Faculty of Physics at the University of Warsaw, Maciej Łebek, M.Sc. and Miłosz Panfil, Ph.D., Prof. UW, have shown that these equations can be generalised to quantum systems, specifically quantum liquids in which the motion of particles is restricted to one dimension. This discovery opens up new avenues for research into transport in one-dimensional quantum systems. The paper, published in the prestigious Physical Review Letters, was awarded an ‘editors’ suggestion'.
The Regional Government of Madrid is strengthening its commitment to quantum communications with an investment of 16 million euros in research projects on quantum communications and cybersecurity within the framework of the International Year of Quantum Science and Technologies declared by UNESCO. Among the initiatives the regional government is promoting stands out MadQuantum-CM, which aims to expand the largest quantum communications network in Europe, MadQCI, positioning itself as a strategic initiative for the development of secure quantum communications in Europe. At IMDEA Networks, as one of the project participants, we lead the development of next-generation quantum communication protocols.