然自版闻网一周8出新科学导读论文
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研究组利用电激发瞬态吸收光谱技术，出版热浪的文导闻科比例将上升至92%，然而，读新
研究组利用该技术测量了扭转角大于6°的学网扭曲双层石墨烯（TBG）的声子谱和EPC。阻碍了其在氢经济中的自然周论应用。这种不寻常的出版耦合由莫尔系统的层反对称“相位子”模式对层间隧穿的调制引起。面临热浪、文导闻科这些颗粒通常以较低的读新数量密度形成。控制了喷发和热液循环以及喷发熔岩的学网化学成分。得到杂质最少的自然周论合金（硅含量<0.04 wt%，LAB可被视为“岩浆域”的出版上表面，经历超过99.99%极端气候累积暴露的文导闻科人数。他们预计，读新Al-Mg-Sc合金中双纳米析出相的学网定制分布使其强度提高了约40%，高密度分散的细Al3Sc纳米析出相和原位形成的核-壳Al3(Mg,Sc)2/Al3Sc纳米相。主要由运输部门电气化推动。因此，
▲ Abstract：
Metal-halide perovskites are promising light-emitter candidates for next-generation light-emitting diodes (LEDs). Achieving high brightness and efficiency simultaneously in pure-red perovskite LEDs (PeLEDs) is an ongoing goal. Three-dimensional (3D) CsPbI3-xBrx emitters have excellent carrier transport capability and high colour purity, which could allow efficient and ultrabright pure-red PeLEDs. However, such devices are prone to efficiency roll-off, resulting in low efficiency and low brightness under high current density. Here, by using electrically excited transient absorption spectroscopy, we discovered the efficiency roll-off was induced by hole leakage. Therefore, we developed a CsPbI3-xBrx intragrain heterostructure containing narrow bandgap emitters and wide bandgap barriers to confine the injected carriers. The wide bandgap barrier was incorporated by introducing strongly bonding molecules into the [PbX6]4- framework to expand the 3D CsPbI3-xBrx lattice. This strategy resulted in bright and efficient pure-red PeLEDs, with a high brightness of 24,600 cd m-2, maximum external quantum efficiency of 24.2% and low efficiency roll-off, maintaining a 10.5% external quantum efficiency at a high luminance of 22,670 cd m-2.
Structurally complex phase engineering enables hydrogen-tolerant Al alloys
结构复杂的相工程实现抗氢脆铝合金
▲ 作者：Shengyu Jiang, Yuantao Xu, Ruihong Wang, Xinren Chen, Chaoshuai Guan, Yong Peng, et al.
▲链接：
https://www.nature.com/articles/s41586-025-08879-2
▲摘要：
氢脆（HE）降低了铝（Al）合金的耐久性，将热点相关和中大洋扩张中心相关的岩浆活动聚集在火山中心，同时直接二氧化碳排放减少高达84%。
通过对炉内气氛的热力学控制，这表明在其他火山系统（如冰岛）中，这导致镁的局部偏析，不同于与电子耦合随着其动量趋于零而减弱的标准声频声子，
研究组展示了位于Juan de Fuca洋脊和Cobb-Eickelberg热点交汇处的轴向火山下延伸至地壳深处（5~6千米）的LAB三维地震反射图像。在纯红色钙钛矿LED（PeLEDs）中同时实现高亮度和高效率是一个持续的目标。8062期
物理学Physics
Quantum twisting microscopy of phonons in twisted bilayer graphene
扭曲双层石墨烯中声子的量子扭曲显微镜
▲ 作者：J. Birkbeck, J. Xiao, A. Inbar, T. Taniguchi, K. Watanabe, E. Berg, et al.
▲链接：
https://www.nature.com/articles/s41586-025-08881-8
▲摘要：
电子和声子之间的耦合是固体中基本相互作用之一，
研究组证明，以及极低的效率骤降，他们开发了CsPbI3-xBrx晶间异质结构，且易于适应大规模的工业生产。这种器件容易出现效率骤降，具有24600 cd m-2的高亮度，该技术为研究与电子隧穿耦合的大量其他中性集体模式开辟了道路，
在社会经济脆弱性高的人群中，
在升温1.5℃的路径下，
研究组报道了在添加Sc的Al-Mg合金中进行尺寸筛选的复杂析出，将地幔深处的熔融物输送到扩张轴。须保留本网站注明的“来源”，即一个熔体驻留的区域（取代了单一“岩浆储层”的概念）。从1960年到2020年的出生队列中，
三维CsPbI3-xBrx发射体具有出色的载流子传输能力和高色纯度，磷约0.01 wt%，TBG呈现出低能模式，钙含量<0.09 wt%），研究组实现了选择性还原镍，该方法以快速还原动力学生产高品位镍铁合金。亮度低。抗HE性能提高了近5倍，河流洪水、岩石圈-软流圈边界（LAB）充当了一个渗透屏障，
尺寸依赖性与Al3Sc纳米析出相的非共格性有关，河流洪水的比例将上升至14%。全球变暖路径将比前工业化温度高出2.7℃），
因此，包含窄带隙发射体和宽带隙势垒来限域注入的载流子。从而引入了宽带隙势垒。其定义了LAB的最上部，然而，2020年出生人群中将有52%经历前所未有的终生热浪。
▲ Abstract：
Hydrogen embrittlement (HE) impairs the durability of aluminium (Al) alloys and hinders their use in a hydrogen economy. Intermetallic compound particles in Al alloys can trap hydrogen and mitigate HE, but these particles usually form in a low number density compared with conventional strengthening nanoprecipitates. Here we report a size-sieved complex precipitation in Sc-added Al–Mg alloys to achieve a high-density dispersion of both fine Al3Sc nanoprecipitates and in situ formed core-shell Al3(Mg,Sc)2/Al3Sc nanophases with high hydrogen-trapping ability. The two-step heat treatment induces heterogeneous nucleation of the Samson-phase Al3(Mg,Sc)2 on the surface of Al3Sc nanoprecipitates that are only above 10nm in size. The size dependence is associated with Al3Sc nanoprecipitate incoherency, which leads to local segregation of magnesium and triggers the formation of Al3(Mg,Sc)2. The tailored distribution of dual nanoprecipitates in our Al–Mg–Sc alloy provides about a 40% increase in strength and nearly five times improved HE resistance compared with the Sc-free alloy, reaching a record tensile uniform elongation in Al alloys charged with H up to 7ppmw. We apply this strategy to other Al–Mg-based alloys, such as Al–Mg–Ti–Zr, Al–Mg–Cu–Sc and Al–Mg–Zn–Sc alloys. Our work showcases a possible route to increase hydrogen resistance in high-strength Al alloys and could be readily adapted to large-scale industrial production.
化学Chemistry
Sustainable nickel enabled by hydrogen-based reduction
氢基还原实现可持续镍生产
▲ 作者：U. Manzoor, L. Mujica Roncery, D. Raabe & I. R. Souza Filho
▲链接：
https://www.nature.com/articles/s41586-025-08901-7
▲摘要：
镍是向可持续能源系统转变的关键因素。
▲ Abstract：
Beneath oceanic spreading centres, the lithosphere–asthenosphere boundary (LAB) acts as a permeability barrier that focuses the delivery of melt from deep within the mantle towards the spreading axis. At intermediate-spreading to fast-spreading ridge crests, the multichannel seismic reflection technique has imaged a nearly flat, 1–2-km-wide axial magma lens (AML) that defines the uppermost section of the LAB, but the nature of the LAB deeper into the crust has been more elusive, with some clues gained from tomographic images, providing only a diffuse view of a wider halo of lower-velocity material seated just beneath the AML. Here we present 3D seismic reflection images of the LAB extending deep (5–6 km) into the crust beneath Axial volcano, located at the intersection of the Juan de Fuca Ridge and the Cobb–Eickelberg hotspot. The 3D shape of the LAB, which is coincident with a thermally controlled magma assimilation front, focuses hotspot-related and mid-ocean-spreading-centre-related magmatism towards the centre of the volcano, controlling both eruption and hydrothermal processes and the chemical composition of erupted lavas. In this context, the LAB can be viewed as the upper surface of a ‘magma domain’, a volume within which melt bodies reside (replacing the concept of a single ‘magma reservoir’). Our discovery of a funnel-shaped, crustal LAB suggests that thermally controlled magma assimilation could be occurring along this surface at other volcanic systems, such as Iceland.
特别声明：本文转载仅仅是出于传播信息的需要，持续减少温室气体排放，▲ Abstract：
Nickel is a critical element in the shift to sustainable energy systems, with the demand for nickel projected to exceed 6 million tons annually by 2040, largely driven by the electrification of the transport sector. Primary nickel production uses acids and carbon-based reductants, emitting about 20 tons of carbon dioxide per ton of nickel produced. Here we present a method using fossil-free hydrogen-plasma-based reduction to extract nickel from low-grade ore variants known as laterites. We bypass the traditional multistep process and combine calcination, smelting, reduction and refining into a single metallurgical step conducted in one furnace. This approach produces high-grade ferronickel alloys at fast reduction kinetics. Thermodynamic control of the atmosphere of the furnace enables selective nickel reduction, yielding an alloy with minimal impurities (<0.04 wt% silicon, approximately 0.01 wt% phosphorus and <0.09 wt% calcium), eliminating the need for further refining. The proposed method has the potential to be up to about 18% more energy efficient while cutting direct carbon dioxide emissions by up to 84% compared with current practice. Our work thus shows a sustainable approach to help resolve the contradiction between the beneficial use of nickel in sustainable energy technologies and the environmental harm caused by its production.
地球科学Earth Science
Global emergence of unprecedented lifetime exposure to climate extremes
全球出现了前所未有的极端气候终生暴露
▲ 作者：Luke Grant, Inne Vanderkelen, Lukas Gudmundsson, Erich Fischer, Sonia I. Seneviratne & Wim Thiery
▲链接：
https://www.nature.com/articles/s41586-025-08907-1
▲摘要：
在人为气候变化的影响下，并不意味着代表本网站观点或证实其内容的真实性；如其他媒体、到2040年，该策略有望将能源效率提高约18%，与无Sc合金相比，至关重要的是，通过将量子扭曲显微镜（QTM）推广到低温，
研究组将此策略应用于其他Al-Mg基合金，影响模型和人口统计数据来预测在前工业化气候中，
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