Researchers have decoded how tiny amounts of calcium control the flow behavior of molten magnesium alloys, a key insight for manufacturing lighter cars and aircraft. Using atomic-scale simulations, the team discovered a critical calcium concentration that acts as a switch, transitioning the melt structure from unstable to stable. This work provides a blueprint for designing alloys with precisely tailored casting properties, moving the industry from costly trial-and-error towards predictive design.

Researchers from Northeastern University in China have decoded the puzzling "saturation dilemma" in high-power laser lighting materials. Their study reveals that heat generation and luminous saturation stem from intrinsic energy losses and non-radiative transitions, offering a unified framework to overcome these barriers in next-generation lighting technologies.

Achieving both high mechanical strength and functional capabilities in ceramics has long been a "zero-sum game." A research team has now broken this barrier by integrating exfoliated multilayer boron nitride nanosheets into a silicon carbide matrix. The resulting composite yields a ~95% increase in strength and exceptional electromagnetic wave absorption across the full Ku-band, paving the way for next-generation aerospace components.

To achieve a deep understanding of the CMAS corrosion mechanism and lifetime prediction of high-performance thermal/environmental barrier coating materials, the (Er_1/4Y_1/4Lu_1/4Yb_1/4)₂Si₂O₇ and (Er_1/6Tm_1/6Y_1/15Gd_1/15Lu_4/15Yb_4/15)₂Si₂O₇ high-entropy rare-earth disilicates designed in this study exhibit approximately 70% reduction in CMAS corrosion depth compared to their single-principal-component counterparts, demonstrating excellent CMAS corrosion resistance. The research further reveals that lattice distortion induced by multi-cation doping can inhibit the penetration of CMAS melt, while large-radius rare-earth ions reduce the corrosion activity by consuming Ca²⁺ in the melt. Additionally, it elucidates the temperature-dependent transition of corrosion mechanisms—dominantly governed by thermodynamics–kinetics competition at 1300 °C, whereas shifting to a dissolution–reprecipitation mechanism at 1500 °C. On this basis, an extended Kalman filter model incorporating physical mechanisms was developed for the first time, enabling high-precision prediction of long-term corrosion depth and rate, thereby providing a reliable tool for coating lifetime assessment.

In conventional catalysis, morphology regulation only increases the specific surface area to expose more active sites, yet it can also modulate material polarization in piezocatalysis, a dual benefit that remains underexplored. Herein, using CTAB as a modifier to inhibit layer stacking via selective adsorption, 2.26 nm atomic-thick 2D ultrathin Bi₂WO₆ nanosheets were synthesized. This design doubled the specific surface area to 29.15 m² g⁻¹, enhanced interfacial polarization to 18.34 mV and raised the effective piezoelectric coefficient to 27.53 pm V⁻¹, yielding a maximum per-unit-power hydrogen production rate of 61.20 μmol g⁻¹ h⁻¹ W⁻¹. This strategy offers a new paradigm for high- efficiency piezocatalyst design.