| 学术动态 |
| 利用拓扑揭开铁基超导电子配对迷雾 |
| 超导态的最本质特征是存在电子之间的两两配对，其配对的特性—配对对称性是理解超导微观机理的一个重要窗口。根据对称性的不同，超导态可以分为s波、p波、d波等。在传统的理论中，p波配对的超导态由于其非平庸的... |
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| Atom Arrays for Superresolution Imaging |
| Viewpoint Atom Arrays for Superresolution Imaging Jacob P. Covey Department of Physics, University of Illinois Urbana-Champaign, Urbana, IL, USA February 22, 2022• Physics 15, 23 A one-dimensional ar... |
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| A Bose-Einstein-Condensate Boomerang |
| Synopsis A Bose-Einstein-Condensate Boomerang February 23, 2022• Physics 15, s24 After being pushed in one direction, the average momentum of a Bose-Einstein condensate is seen to slow and return to ... |
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| Deep Neural Network to Find Hidden Turbulent Motion on the Sun |
| The Sun is important to the Sustainable Development Goal of Affordable and Clean Energy, both as the source of solar power and as a natural example of fusion energy. Our understanding of the Sun is li... |
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| Nanoscale Computer Operates at the Speed of Light |
| Synopsis Nanoscale Computer Operates at the Speed of Light February 18, 2022• Physics 15, s23 Predictions indicate that a nanometer-sized wave-based computer could solve equations in a fraction of th... |
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| How Cotton Fibers Become Yarn |
| FOCUS How Cotton Fibers Become Yarn February 18, 2022• Physics 15, 27 Experiments unravel the mysterious twisting process by which short fibers bind together into yarn. J. Crassous/Univ. of Rennes A... |
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| Error Mitigation Approach Helps Quantum Computers Level Up |
| The research team describes this work in a paper published in Physical Review Letters, "Mitigating Depolarizing Noise on Quantum Computers with Noise-Estimation Circuits." "Quantum computers have the ... |
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| Planets Born from Dying Stars |
| Research News Planets Born from Dying Stars February 17, 2022• Physics 15, 26 One explanation of a new analysis of dying binary-star systems is that planets might be forming in the “ashes” of stars... |
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| 非平衡态光致电声耦合增强的动力学追踪 |
| 固体材料中的电子-声子耦合是凝聚态物理领域的基本问题之一。近年来，随着超快激光技术的快速发展，利用光学手段对电声耦合作用进行调控受到了广泛关注。光调制的电声耦合行为在许多现象中具有重要意义，比如，光... |
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| Study sheds light on axion dark matter |
| Credit: CC0 Public Domain Scientists from Durham University and Kings College London have presented a theoretical review in a new study strongly supporting the search for axion dark matter. The ident... |
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| Physicists Harness Electrons to Make 'Synthetic Dimensions' |
| Our spatial sense doesn't extend beyond the familiar three dimensions, but that doesn't stop scientists from playing with whatever lies beyond. advertisement Rice University physicists are pushing s... |
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| Physicists Observe an Exotic 'Multiferroic' State in an Atomically Thin Material |
| "Two-dimensional materials are like LEGOs -- you put one on top of another to make something different from either piece alone," says study author Nuh Gedik, professor of physics at MIT. "Now we have ... |
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| Sensor Breakthrough Paves Way for Groundbreaking Map of World Under Earth Surface |
| University of Birmingham researchers from the UK National Quantum Technology Hub in Sensors and Timing have reported their achievement in Nature. It is the first in the world for a quantum gravity gra... |
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| Evidence for Exotic Magnetic Phase of Matter |
| "Broadly speaking, this is a novel type of magnet," said Brookhaven Lab physicist Mark Dean, senior author on a paper describing the research just published in Nature Communications. "Since magnetic m... |
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| 铜氧化物超导体高压下的超导-绝缘体相变 |
| 对固体施加一个压力，晶格常数会变小，由此可增加能带宽度，把一个绝缘体转变为导体。这是高压诱导的绝缘体向导体的转变是固体材料常见的物理现象，称之为Wilson转变。而把一个金属甚至超导体通过压力，在不改变... |
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| How Fabrics Dry |
| Synopsis How Fabrics Dry February 17, 2022• Physics 15, s22 Nuclear magnetic resonance spectroscopy helps researchers reveal the relationship between the bound and vapor states of water in drying tex... |
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| More accurately capturing data on crime using surveys |
| Figure 1. Correlation with the police data by topic and “method” in the data aggregated for 2015 to 2020. Variables were transformed prior by adding 1 and taking the log. Credit: DOI: 10.1177/001112... |
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| EAST冷却塔群、滤波室相控电抗器降噪及安全防护技术评审会召开 |
| 2月18日，EAST冷却塔群、滤波室相控电抗器降噪及安全防护技术评审会在等离子体所召开。专家组由来自合肥工业大学、强磁场科学中心、安徽大学、中船第九设计研究院工程有限公司、中海环境科技(上海)股份有限公司的... |
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| Atomic Clocks Measure Einstein's General Relativity at Millimeter Scale |
| The experiments, described in the Feb. 17 issue of Nature, suggest how to make atomic clocks 50 times more precise than today's best designs and offer a route to perhaps revealing how relativity and g... |
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| Extending and Contracting Cells |
| Synopsis Extending and Contracting Cells February 15, 2022• Physics 15, s21 Cell-substrate interactions explain a difference in behavior between individual cells and tissues on a surface. A. Killeen... |
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| A Quantized Surprise from Fermi Surface Topology |
| Synopsis A Quantized Surprise from Fermi Surface Topology February 16, 2022• Physics 15, s19 The quantized conductance of a two-dimensional electron gas can reflect its Fermi surface topology. C. L.... |
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| 极端条件合成的多阶钙钛矿新材料及孤对电子构效调控 |
| 钙钛矿及其衍生材料中由于存在电荷、自旋、轨道和晶格多重自由度，从而呈现出丰富的物理现象，是物质科学和材料技术的重要载体。其中，在Pb/Bi基钙钛矿材料中，由于Pb2+/Bi3+存在6s2孤对电子，使得含有这些离子的... |
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| 量变导致质变：奇异金属与高温超导的普适物理规律 |
| 最近，中国科学院物理研究所/北京凝聚态物理国家研究中心利用材料基因工程“连续组分外延薄膜与匹配的跨尺度表征技术”获得了奇异金属散射（线性电阻斜率A1）与高温超导转变温度（Tc）之间的普适物理规律（A10.5... |
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| Illuminating Black Holes through Turbulent Heating |
| Viewpoint Illuminating Black Holes through Turbulent Heating Gregory Howes Department of Physics and Astronomy, University of Iowa, Iowa City, IA, USA February 14, 2022• Physics 15, 20 Predictions in... |
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| Sneak Preview of Early Quasar Observations |
| Research News Sneak Preview of Early Quasar Observations February 15, 2022• Physics 15, 24 The newly launched James Webb Space Telescope should be able to see the galaxies that house some of the Univ... |
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| Graphene and an Intense Laser Open the Door to the Extreme |
| It is known that a thinner target is required for higher ion energy in laser ion acceleration theory. However, it has been difficult to directly accelerate ions with an extremely thin target regime si... |
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| Breakthrough brings a fusion energy device closer to realization |
| Physicist Emily Paul and Matt Landreman with figures behind them. Credit: Kiran Sudarsanan Scientists have achieved a remarkable breakthrough in the conceptual design of twisty stellarators, experimen... |
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| Examining the results of new dark matter searches by the PandaX-4T and ADMX collaborations |
| The ADMX apparatus right after extracting from the magnet bore. It was cooled by Liquid Nitrogen, so it makes cold mist. The left big black bag and right big reservoir are the parts of liquid Helium r... |
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| Maximum Neutrino Mass Drops Again |
| Research News Maximum Neutrino Mass Drops Again February 14, 2022• Physics 15, 25 The KATRIN experiment has delivered the best estimate to date for the maximum mass of a neutrino, finding it to be ov... |
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| Eccentric Fractional Skyrmion Discovered in Numerical Simulations of Ultra-Cold Superfluids |
| "This may bring about a major change in the long history of research on skyrmions," states Hiromitsu Takeuchi, lecturer at the Graduate School of Science and the Nambu Yoichiro Institute of Theoretica... |
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| Graphene Spintronics: 1D Contacts Improve Mobility in Nano-Scale Devices |
| The team -- comprising researchers from the National Graphene Institute (NGI) led by Dr Ivan Vera Marun, alongside collaborators from Japan and including students internationally funded by Ecuador and... |
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| Mapping the Quantum Future With Smart TV Technology |
| Scientists have created the first ever 2D map of the Overhauser field in organic LEDs, shedding light on the challenges we face in designing accurate quantum-based technologies advertisement Televis... |
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| High Expectations for Black Hole Simulations |
| I want to understand how black holes lose energy. Radio-telescope images of the black hole in the galaxy M87—the black hole imaged by the EHT—show that it is emitting a jet of plasma that extends 49... |
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| Waves in a Solid Imitate Twisted Light |
| FOCUS Waves in a Solid Imitate Twisted Light February 11, 2022• Physics 15, 21 Waves of vibration moving through the walls of a pipe can carry orbital angular momentum that could be used for several ... |
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| 211家学会联名发布公约抵制学术不端 |
| 在2月15日召开的中国科协第十届全国委员会第三次会议上，211家中国科协全国学会联名发布《中国科协全国学会学术出版道德公约》。 《公约》倡议科研人员、期刊编辑和审稿人破除“圈子”文化和利益纽带，加强行为自律... |
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| 2022重大科学问题、工程技术难题等开始征集 |
| 中国科协办公厅关于征集2022重大科学问题、工程技术难题和产业技术问题的通知 各全国学会、学会联合体，有关企业科协： 为进一步加强科技前瞻研判，引领原创性科研攻关，推进科技自立自强，中国科协组织动员全国学会... |
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| Quantum errors made more tolerable |
| The experimental chamber in which the experiments of de Neeve and colleagues were performed. Credit: ETH Zurich/D-PHYS Home group ETH physicists have modified one of the major schemes for quantum erro... |
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| Time crystals that persist indefinitely at room temperature could have applications in precision timekeeping |
| Credit: CC0 Public Domain We have all seen crystals, whether a simple grain of salt or sugar, or an elaborate and beautiful amethyst. These crystals are made of atoms or molecules repeating in a symme... |
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| Theory shows baryogenesis requirement could drive the contribution of primordial black holes to dark matter |
| An example of the correlation function between baryon and PBH densities. Credit: Wu, Pinetti & Silk. While many studies have hinted at the existence of dark matter, a material that does not absorb, re... |
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| We're all radioactive, so let's stop being afraid of it |
| Drink up: carrot juice contains a small amount of radioactive potassium. Credit: Africa Studio / shutterstock Many people are frightened of radiation, thinking of it as an invisible, man-made and dead... |
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| A new upper limit on the mass of neutrinos |
| In a milestone that will bear on future discoveries in nuclear and particle physics, today an international team including scientists from MIT announced that they have established a new upper limit on... |
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| Mathematician George Lusztig receives Wolf Prize |
| George Lusztig, the Abdun-Nur Professor of Mathematics at MIT, has been awarded the prestigious 2022 Wolf Prize in Mathematics for his work on geometric representation theory and algebraic groups. The... |
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| Bacteria’s hidden weapon: toxins locked inside a capsule secured by a cork |
| Bacteria’s hidden weapon: toxins locked inside a capsule secured by a cork New insights could help to develop antibacterial and antifungal applications February 10, 2022 Structural Biology The micro... |
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| Seagrasses continue to release methane after their die-off |
| Seagrasses continue to release methane after their die-off Methane is formed from seagrass meadows, even decades after the plants died off February 14, 2022 Climate Ecology (E&C) Seagrass meadows pla... |
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| 十年磨一剑，我院黄光顺教授、鄢文标团队精确测量正负电子湮没中的R值 |
| 我院黄光顺教授、鄢文标副教授带领的中国科大北京谱仪（BESIII）R值研究团队，联合中国科学院高能物理研究所胡海明研究员、平荣刚研究员以及德国Mainz大学Achim Denig教授，利用连续能区2.23-3.67GeV正负电子对撞数据... |
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| Researchers Use Supercomputers for Largest-Ever Turbulence Simulations of Its Kind |
| Due to its complexity, researchers have come to rely on a combination of experiments, semi-empirical turbulence models, and computer simulation to advance the field. Supercomputers have played an esse... |
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| Neutrinos Are Lighter Than 0.8 Electronvolts |
| The international KArlsruhe TRItium Neutrino Experiment (Katrin), located at Karlsruhe Institute of Technology (KIT), has broken an important "barrier" in neutrino physics which is relevant for both p... |
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| 首次发现类星体外流在百光年尺度上的加速现象 |
| 近日，武汉大学物理科学与技术学院牟国斌研究员与中国科学技术大学天文学系何志成副研究员，王挺贵教授，刘桂琳教授合作，首次观测到类星体高速外流在百光年尺度上的加速现象。相关工作以“Evidence for quasar fast... |
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| Cavity Engineering for Superconductors |
| Synopsis Cavity Engineering for Superconductors February 10, 2022• Physics 15, s18 Enclosing a cuprate superconductor in a passive THz-resonant cavity could provide a new route to modifying a superco... |
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| Race Not Over Between Classical and Quantum Computers |
| Research News Race Not Over Between Classical and Quantum Computers February 10, 2022• Physics 15, 19 A new classical algorithm reduces—by a factor of one billion—a recent claim of so-called quantu... |
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| Quest for Quantum Materials Through Better Measurement of Quantum Entanglement |
| This pivotal research work has recently been published in Physical Review Letters. Quantum materials play a vital role in propelling human advancement. The search for more novel quantum materials with... |
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| LHAASO最新实验验证爱因斯坦相对论时空对称的正确性 |
| 爱因斯坦的相对论认为，宇宙中物质运动最快的速度是光速，这一限制有没有可能被打破？这个问题可以通过洛伦兹对称性的破缺来检验。近日，位于我国四川稻城的高海拔宇宙线实验LHAASO合作组利用其观测的高能伽马射... |
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| 大批振幅张量网络方法模拟量子线路 |
| 第一个应用是避免存储整个态矢量而进行全振幅模拟。具体做法为是将末态矢量分成很多个大批振幅的组合，并用大批振幅方法遍历所有的批次。换句话说，末态的希尔伯特空间被划分成了若干个子空间，然后顺序地使用大批振... |
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| Computational Modelling Experts Pioneer Pest-Busting Model |
| A new study, published in Scientific Reports, builds upon individual-based model (IBM) techniques to explain and predict the formation of high slug density patches in arable fields. While existing mod... |
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| Electron Conspiracy in a Japanese Lattice Pattern: Kagome Metals Baffle Science |
| Atoms form a kagome pattern A kagome pattern is composed of three shifted regular triangular lattices. As a result, the kagome lattice is a regular pattern composed of stars of David. It is a common J... |
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| Spatial training of youth with blocks and puzzles could unlock the UK's mathematical potential |
| Correlation between age (years) and the effects of spatial training on mathematics outcomes. This is a zero-order correlation between the average effect size of spatial training on mathematics outcome... |
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| Extracting the Spin and Valley Information of Electrons |
| Synopsis Extracting the Spin and Valley Information of Electrons February 9, 2022• Physics 15, s17 An electron’s spin and valley information can be determined by monitoring how easily that electron ... |
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| Galactic Debris as a Dark Matter Identifier |
| Research News Galactic Debris as a Dark Matter Identifier February 8, 2022• Physics 15, 18 Dynamic maps of 12 stellar streams trace paths that are determined by the distribution of mass in the Milky ... |
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| New Plant-Derived Composite Is Tough as Bone and Hard as Aluminum |
| A single wood cell wall is constructed from fibers of cellulose -- nature's most abundant polymer, and the main structural component of all plants and algae. Within each fiber are reinforcing cellulos... |
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| Distant Galaxies and the True Nature of Dark Matter |
| These important findings have been reported in a new study, recently published in the prestigious Astronomy and Astrophysics journal, that studied a large number of distant galaxies, some seven billio... |
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| Where Mathematics and a Social Perspective Meet Data |
| "When we encounter complex data in areas such as public health, economics or elsewhere, it can be valuable to address questions regarding the presence of discernable groups, and the inherent "cohesion... |
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| Einstein's Photoelectric Effect: The Time It Takes for an Electron to Be Released |
| It is now one hundred years ago that Albert Einstein was awarded the Nobel Prize in Physics for his work on the photoelectric effect. The jury had not yet really understood his revolutionary theory of... |
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| Spatial Training With Blocks and Puzzles Could Unlock the UK's Mathematical Potential |
| Spatial training with blocks and puzzles could unlock mathematical potential. A sustained focus on spatial reasoning training could help children learn science, technology, engineering and mathematics... |
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| Researchers Develop Methodology for Streamlined Control of Material Deformation |
| Can you crumple up two sheets of paper the exact same way? Probably not -- the very flexibility that lets flexible structures from paper to biopolymers and membranes undergo many types of large deform... |
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| “Tin-Can Telephone” Connects Two Ions |
| Viewpoint “Tin-Can Telephone” Connects Two Ions Christian Tomás Schmiegelow Department of Physics, FCEyN, University of Buenos Aires and the Institute of Physics of Buenos Aires - CONICET, Buenos A... |
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| A Plasma Lens for the World’s Most Powerful Lasers |
| Synopsis A Plasma Lens for the World’s Most Powerful Lasers February 8, 2022• Physics 15, s16 Researchers propose inducing density variations in a plasma to create a lens that can focus a petawatt-s... |
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| Future Gravitational Wave Detector in Space Could Uncover Secrets of the Universe |
| New research has shown that future gravitational wave detections from space will be capable of finding new fundamental fields and potentially shed new light on unexplained aspects of the Universe. adv... |
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| Toward Triggering Room-Temperature Superconductivity With Light |
| In the case of a superconducting material known as yttrium barium copper oxide, or YBCO, experiments have shown that under certain conditions, knocking it out of equilibrium with a laser pulse allows ... |
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| New Insight Into Unconventional Superconductivity |
| The kagome pattern, a network of corner-sharing triangles, is well known amongst traditional Japanese basket weavers -- and condensed matter physicists. The unusual geometry of metal atoms in the kago... |
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| Speed Limit on Change |
| FOCUS Speed Limit on Change February 4, 2022• Physics 15, 17 Experiments with a single calcium atom prove that processes of change have a speed limit determined by the rate at which they can dissipat... |
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| Mutating Quantum Particles Set in Motion |
| Researchers from the Cavendish Laboratory have modelled a quantum walk of identical particles that can change their fundamental character by simply hopping across a domain wall in a one-dimensional la... |
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| Tiny Electrical Vortexes Bridge Gap Between Ferroelectric and Ferromagnetic Materials |
| Ferromagnetic materials have a self-generating magnetic field, ferroelectric materials generate their own electrical field. Although electric and magnetic fields are related, physics tells us that the... |
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| New Findings Proliferate Questions About Hypothetical Axionic Behavior in Weyl Semimetals |
| Date: February 8, 2022 Source: American Institute of Physics Summary: Researchers say an experimental approach for demonstrating the existence of an axionic behavior in specific materials may not have... |
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| Blowin’ in the Galactic Wind |
| Research News Blowin’ in the Galactic Wind February 3, 2022• Physics 15, 15 Nuclear winds expel cold molecular hydrogen gas from the Galactic Center, providing new clues to how star-forming material... |
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| Quantum Measurement Strikes a Balance |
| Synopsis Quantum Measurement Strikes a Balance February 3, 2022• Physics 15, s13 An experiment demonstrates that, in a quantum measurement, there is a three-way trade-off between different types of i... |
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| New discovery may revolutionize decades-old understanding of integrable hierarchies |
| Figure 1. The main theorem describes the relationship between solutions of the KdV and BKP hierarchies. The tau functions can be identified after a simple change of variables. Credit: Institute for Ba... |
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| Using the Universe’s Coldest Material to Measure the World’s Tiniest Magnetic Fields |
| Some magnetic fields of great interest, for example those produced by the brain, are extraordinarily weak, a billion times weaker than the field of the Earth, and therefore, extremely sensitive magnet... |
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| 科学家首测费米超流第二声 |
| 科学家首测费米超流第二声 中国科学技术大学潘建伟、姚星灿、陈宇翱等与澳大利亚科学家胡辉合作，首次在处于强相互作用（幺正）极限下的费米超流体中观测到熵波衰减的临界发散行为，揭示该体系存在着一个可观的相变... |
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| 黄华卿课题组与合作者揭示结构非晶化诱导的拓扑态 |
| 晶体中的电子性质通常与结构对称性有着重要关联，因而非晶化导致的晶体结构对称性降低或破坏会损害电子性质。对于拓扑材料而言，尽管晶体中的拓扑态对无序扰动具有很强的鲁棒性，但随着结构无序程度的增强，其电子能... |
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| Mechanical control of a reconfigurable intelligent surface |
| Schematic views of the RIS supercell and the meta-atom. Right: Geometric phase control in each supercell is achieved by transmitting the torque from a stepping motor to the meta-atoms through a set of... |
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| Using radar to monitor burn victims and babies? It's now possible |
| PhD candidate Ziqian Zhang and Professor Benjamin Eggleton optimising the photonic system – the basis of the high frequency radar. Credit: University of Sydney University of Sydney scientists have ac... |
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| Researchers shed light on role of kinetics in fluid transport |
| Credit: Pixabay/CC0 Public Domain Remco Hartkamp, Max Döpke and Fenna Westerbaan van der Meij, researchers at the Delft University of Technology department Process & Energy, are shedding new light on... |
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| Researchers use tiny magnetic swirls to generate true random numbers |
| Magnetic swirls called skyrmions fluctuate randomly in size, a behavior that can be harnessed to generate true random numbers. Credit: Xiao lab / Brown University Whether for use in cybersecurity, gam... |
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| The high-speed physics of how bobsled, luge and skeleton send humans hurtling faster than a car on the highway |
| Skeleton racers don’t have a means of directly controlling the runners, so they must use subtle body movements to flex the sled and initiate turns. Credit: 121a0012 via Wikimedia Commons, CC BY-SA Sp... |
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| 3D-Printed Magnets Made from Recycled Materials |
| Research News 3D-Printed Magnets Made from Recycled Materials February 2, 2022• Physics 15, 14 Using recycled materials to make magnets could allow companies to circumvent supply chain issues for sou... |
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| Teams collaborate to reach a better understanding of symmetry breaking |
| A laser beam illuminates two identical coupled optical cavities symmetrically. The cavities are the grey areas with missing holes and enclosed by red holes. Above a critical light intensity, a tiny pe... |
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| Supercomputer and quantum simulations solve a difficult problem of materials science |
| A global team of scientists considered the bending energy of a silicate molecule, disiloxane. Although the system appears to be simple and tractable, the bending energy calculation is actually a diffi... |
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| A mathematical model may help explain how blood circulates in the brain |
| Travelling waves in a non-linear flow network. Each panel displays different time frames. The network is represented by black lines while the colour around each node indicates the volume that has accu... |
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