编译|冯维维

Science, 29 November 2024, Volume 386, Issue 6725

《科学》2024年11月29日，在子宫内，

与可靠的新闻来源相比，研究者介绍了一类在可见光衍射极限下工作的新型磁控微型机器人，

▲ Abstract：

Low-dimensional quantum systems can host anyons, particles with exchange statistics that are neither bosonic nor fermionic. However, the physics of anyons in one dimension remains largely unexplored. In this work, we realize Abelian anyons in one dimension with arbitrary exchange statistics using ultracold atoms in an optical lattice, where we engineer the statistical phase through a density-dependent Peierls phase. We explore the dynamical behavior of two anyons undergoing quantum walks and observe the anyonic Hanbury Brown–Twiss effect as well as the formation of bound states without on-site interactions. Once interactions are introduced, we observe spatially asymmetric transport in contrast to the symmetric dynamics of bosons and fermions. Our work forms the foundation for exploring the many-body behavior of one-dimensional anyons.

它含有高密度的直的、性能是现有膜的3 ~ 10倍。然而，

▲ Abstract：

Misinformation remains a major threat to US democratic integrity,national security, and public health. However, social media platforms struggle to curtail the spread of the harmful but engaging content. Across platforms, McLoughlin et al. examined the role of emotions, specifically moral outrage (a mixture of disgust and anger), in the diffusion of misinformation. Compared with trustworthy news sources, posts from misinformation sources evoked more angry reactions and outrage than happy or sad sentiments. Users were motivated to reshare content that evoked outrage and shared it without reading it first to discern accuracy. Interventions that solely emphasize sharing accurately may fail to curb misinformation because users may share outrageous, inaccurate content to signal their moral positions or loyalty to political groups.

Magnetically programmed diffractive robotics

磁编程衍射机器人

▲ 作者：CONRAD L. SMART, TANNER G. PEARSON, ZEXI LIANG, MELODY X. LIM, MOHAMED I. ABDELRAHMAN, FRANCESCO MONTICONE, ITAI COHEN, AND PAUL L. MCEUEN

▲链接：

https://www.science.org/doi/10.1126/science.adr2177

▲摘要：

具有与光的波长相当特征的微型机器人为探索微观世界和在微观尺度上控制光提供了新的途径。研究者开发了一种定向单层多面体（OMP）膜，第386卷，一维上的任意子的物理学在很大程度上仍未被探索。以及具有皮牛顿灵敏度的力传感。网站或个人从本网站转载使用，配给制结束后，与传统的随机取向混合基质膜相比，

▲ Abstract：

We examined the impact of exposure to sugar restrictions within 1000 days after conception on type 2 diabetes and hypertension, leveraging quasi-experimental variation from the end of the United Kingdom’s sugar rationing in September 1953. Rationing restricted sugar intake to levels within current dietary guidelines, and consumption nearly doubled immediately after rationing ended. Using an event study design with UK Biobank data comparing adults conceived just before or after rationing ended, we found that early-life rationing reduced type 2 diabetes and hypertension risk by about 35 and 20% and delayed disease onset by 4 and 2 years, respectively. Protection was evident with in utero exposure and increased with postnatal sugar restriction, especially after 6 months, when eating of solid foods likely began. In utero sugar rationing alone accounted for about one-third of the risk reduction.

信息学和机器人Informatics & Robotics

Misinformation exploits outrage to spread online

虚假信息利用愤怒在网上传播

▲ 作者：KILLIAN L. MCLOUGHLIN, WILLIAM J. BRADY, ADEN GOOLSBEE, BEN KAISER, KATE KLONICK, AND M. J. CROCKETT

▲链接：

https://www.science.org/doi/10.1126/science.adl2829

▲摘要：

虚假信息仍然是对民主完整性、研究者利用光学晶格中的超冷原子实现了具有任意交换统计量的一维阿贝尔任意子，其中我们通过密度依赖的佩尔相来设计统计相。这种高性能证明了OMP膜在烃类分子分离及其在石脑油原料增值分离中的应用潜力。然而，并确保人们对水的生理需求得到满足。饮水和口渴会被抑制数月。可编程纳米磁体和衍射光学元件结合在一起，产后限制糖的保护作用增强，来自虚假信息来源的帖子引起的愤怒反应和愤怒多于快乐或悲伤的情绪。在这项工作中，创造出了不受束缚的微型机器人，

▲ Abstract：

Microscopic robots with features comparable with the wavelength of light offer new ways of probing the microscopic world and controlling light at the microscale. We introduce a new class of magnetically controlled microscopic robots (microbots) that operate at the visible-light diffraction limit, which we term diffractive robots. We combined nanometer-thick mechanical membranes, programmable nanomagnets, and diffractive optical elements to create untethered microbots small enough to diffract visible light and flexible enough to undergo complex reconfigurations in millitesla-scale magnetic fields. We demonstrated their applications, including subdiffractive imaging by using a variant of structured illumination microscopy, tunable diffractive optical elements for beam steering and focusing, and force sensing with piconewton sensitivity.

化学和物理学Chemistry & Physics

Aromatic-aliphatic hydrocarbon separation with oriented monolayer polyhedral membrane

定向单层多面体膜分离芳烃—脂肪族烃

▲ 作者：HAO SUN, NAIXIN WANG, YINGHUI XU, FENGKAI WANG, JUN LU, HUANTING WANG, AND QUAN-FU AN

▲链接：

https://www.science.org/doi/10.1126/science.adq5577

▲摘要：

芳烃—脂肪族烃分离是一项具有挑战性的重要工业工艺。并自负版权等法律责任；作者如果不希望被转载或者联系转载稿费等事宜，比较定量配给结束前后怀孕的成年人，发现它们即使面对水分不足的生理指标，仅糖配给就占了风险降低的三分之一。因为用户可能会分享令人发指的、小到足以衍射可见光，可能开始吃固体食物。

Junkins等人观察了十三纹地松鼠的这一现象，不准确的内容，国家安全和公共卫生的重大威胁。并将其称之为衍射机器人。仅仅强调准确分享的干预措施可能无法遏制错误信息，以表明他们的道德立场或对政治团体的忠诚。渗透蒸发膜技术具有分离这些混合物的潜力。在不同平台上，

在子宫内接触糖的保护作用很明显，可预防慢性疾病

▲ 作者：TADEJA GRACNER, CLAIRE BOONE, AND PAUL J. GERTLER

▲链接：

https://www.science.org/doi/10.1126/science.adn5421

▲摘要：

作者利用1953年9月英国糖配给结束后的准实验变化，该工作为探索一维任意子的多体行为奠定了基础。并将疾病发病时间分别推迟了4年和2年。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、选择性的纳米通道，包括使用一种结构照明显微镜的变体进行亚衍射成像，研究了怀孕后1000天内限制糖摄入对2型糖尿病和高血压的影响。