近日，上海交通大学物理与天文学院史志文教授、梁齐教授与合作者在《Science》上发表题为“Homochiral carbon nanotube van der Waals crystals”的研究论文，论文以First Release的形式在Science网站提前在线发表。
编译 | 冯维维SCIENCE, VOLUME 380|ISSUE 6649|9 JUN 2023《科学》第380卷，6649期，2023年6月9日物理学PhysicsConstraints on the Hubble constant from supernova Refsda
编译 | 李言Science, 8 Nov 2024, Volume 386 Issue 6722《科学》2024年11月8日，第386卷，6722期材料科学Materials ScienceJanus channel of membranes enables concurren
Abstract:Engineering the structure of grain boundaries by solute segregation is a promising strategy to tailor the properties of polycrystalline materials. Solute segregation triggering phase transitions at GBs has been suggested theoretically to offer different pathways to design interfaces， but an understanding of their intrinsic atomistic nature is missing. We combined atomic resolution electron microscopy and atomistic simulations to discover that iron segregation to GBs in titanium stabilizes icosahedral units that form robust building blocks of distinct GB phases. Owing to their five-fold symmetry， the iron cages cluster and assemble into hierarchical GB phases characterized by a different number and arrangement of the constituent icosahedral units. Our advanced GB structure prediction algorithms and atomistic simulations validate the stability of these observed phases and the high excess of iron at the GB that is accommodated by the phase transitions.
2022年4月7日，《科学》杂志的封面文章爆出了一条引发物理学界震动的大新闻。这篇由近400位科学家合著的论文指出，他们对W玻色子的质量进行了前所未有的高精度测量，结果发现测量值比粒子物理标准模型的预测值重了近0.1%。
编译 | 冯维维Science, 1 November 2024, Volume 386, Issue 6721《科学》2024年11月1日，第386卷，6721期生物学BiologyA molecular mechanism for bright color variation
我国科研团队成功研制出世界上最轻最小的纯自然光供能微型飞行器。这款太阳光驱动的超轻型微型飞行器CoulombFly重4.21克，比知了还要轻。我国科学家研发的这款微型飞行器首次实现纯自然光供能下起飞的持续飞行。
近日，上海交通大学物理与天文学院史志文教授、梁齐教授与合作者在《Science》上发表题为“Homochiral carbon nanotube van der Waals crystals”的研究论文，论文以First Release的形式在Science网站提前在线发表。
