SECUF Contributes to Development of 35.6 Tesla All-Superconducting Magnet
Recently, leveraging the national major science and technology facility “Synergetic Extreme Condition User Facility (SECUF),” a joint research team from the Institute of Electrical Engineering of the Chinese Academy of Sciences and the Institute of Physics of the Chinese Academy of Sciences successfully developed an all-superconducting user magnet with a central magnetic field reaching 35.6 Tesla, breaking the 32 Tesla world record previously held by the U.S. National High Magnetic Field Laboratory. This magnet is the only all-superconducting user experimental magnet globally capable of providing magnetic fields above 30 Tesla, offering extreme high-field experimental conditions for domestic and international research teams. Its maximum magnetic field is more than 700,000 times that of Earth’s magnetic field, representing the highest record in this field worldwide. This achievement signifies that China has reached international advanced levels in high-temperature superconducting applications and will provide technical support for material science, life science, and nuclear fusion research.
Source: Synergetic Extreme Condition User Facility (SECUF)
Meridian Project CN-DARN Reveals New Mechanisms of Mid-Latitude Space Environment Evolution in Asia
Recently, the Chinese Dual Auroral Radar Network (CN-DARN) team of the Meridian Project, utilizing continuous observations from CN-DARN, achieved a series of important original discoveries: for the first time internationally, they directly observed and proved the direct correlation between subauroral polarization stream acceleration and auroral brightness enhancement, providing a completely new perspective for understanding magnetosphere-ionosphere coupling processes; they first clarified that even during strong geomagnetic storms when the auroral oval does not cover China’s airspace, high-speed ionospheric irregularities excited by subauroral physical processes can still intrude into China’s airspace and affect the ionospheric environment; meanwhile, the research also quantified the direct impact of auroral activities on regional shortwave communications essential for aviation, maritime navigation, and emergency rescue operations. Related research findings have been published in The Innovation Geoscience.
Source: National Space Science Center, Chinese Academy of Sciences
BIMSA Team Develops “Graph Statistics” Model Revealing Genetic Dialogue Mechanisms in Plant Grafting
Recently, a research team led by Researcher WU Rongling at Beijing Institute of Mathematical Sciences and Applications (BIMSA) developed a generalized statistical mechanics model that successfully decoded complex gene interaction mechanisms in grafted plants. The research team introduced tools from evolutionary game theory and complex network science into botanical research, integrating directed graph topology mathematical theory. This enabled the study to move beyond focusing on expression differences of single genes, instead encoding thousands of interacting genes into “information-rich, dynamic, omnidirectional, personalized networks.” This research not only reveals the molecular blueprint for plant healing and regeneration but also provides a completely new mathematical framework and theoretical perspective for botany, evolutionary theory, and even human organ transplantation. Related research findings have been published in Advanced Science.
Source: Beijing Institute of Mathematical Sciences and Applications
School of Physics, Peking University Successfully Develops Fiber-Integrated Nonlinear Phase-Matched Optical Crystal
Recently, Professor LIU Kaihui and Associate Researcher HONG Hao from the Institute of Condensed Matter Physics and Materials Physics, School of Physics, Peking University, together with Professor SUN Zhipei from Aalto University, Finland, and collaborators, achieved important progress in the field of fiber-integrated optical crystals. The research team proposed for the first time a van der Waals material phase-matching theory oriented toward fiber end-face integration architecture. This work provides a new design platform and theoretical model for achieving efficient second-order optical nonlinearity in all-fiber systems. The related results are expected to promote the development of fiber optical parametric oscillators, all-fiber quantum communication nodes, and highly integrated nonlinear photonic devices. This research was supported by the Interdisciplinary Institute of Light-Elements Quantum Materials (LEQM), and related findings have been published in Nature Materials.
Source: School of Physics, Peking University
School of Environment, Tsinghua University Reveals That Nitrate Radicals Dominate Nocturnal Atmospheric Mercury Oxidation in Beijing Through Heterogeneous Halogen Reactions
Recently, the team of WANG Shuxiao and WU Qingru from the School of Environment, Tsinghua University, through their independently developed automated atmospheric speciated mercury observation system based on coupled cation exchange membranes, discovered that significant nocturnal gaseous oxidized mercury (GOM) generation processes are universally present across different seasons. The study shows that atmospheric mercury oxidation is not limited to daytime but may continue at night, with its variation characteristics closely related to nocturnal nitrate radical activities. Although the proposed reaction pathway has currently only obtained preliminary verification through simplified theoretical calculations, this result provides for the first time a reasonable and potential chemical mechanism source for nocturnal mercury oxidation processes. Related research findings have been published in Journal of Hazardous Materials.
Source: Research Platform of Air Ground Integrated Environment Perception and Intelligent Response