相关成果于近日发表于国际期刊《物理评论快报》(Physical Review Letters)。 据介绍，光钟系统不确定度直接决定了未来时间频率基准的准确性和可靠性。这项成果在基础研究领 域，将提升对基本物理定律检验的灵敏度，为探索超越标准模型的新物理提供更精确工具；在计量应用 方面，将为基于光钟重新定义国际单位制"秒"提供坚实技术支撑；在工程应用层面，将为发展下一代重 力测量、精密导航定位等技术提供核心频率基准。 据了解，光钟是一种利用光产生时间基准的精密仪器，是迄今人类能够实现的精度最高的时间计量装 置，在地球测地学、导航定位系统、通讯网络、城市交通管理等领域，发挥着重要作用。 目前，具有代表性的光频标体系有原子或离子，光钟可分为钙离子光钟、铝离子光钟、锶原子光钟、镱 原子光钟等。 中国科学院精密测量院高克林团队从事钙离子光钟研究近30年，于2022年研制出不确定度为3E-18(E-18 表示百亿亿分之一)、相当于运行105亿年偏差不到1秒的钙离子光钟。 此次研究在上述成果基础上，创新性发展液氮低温技术路线，攻克黑体辐射频移与离子热运动(宏运动) 精密控制等关键技术挑战，研制出总系统不确定度达到4.4E- ...

由中国科学院广州地球化学研究所科研团队自主研发的首台国产纳米晶体结构快速解析仪于14日正 式发布。该仪器具备对纳米级晶体与矿物进行物相识别与结构测定的高通量快速分析能力，整体技术水 平已与国际同类最新设备持平。 目前，团队已利用该技术成功解析"王焰钯矿""氧铅烧绿石"两种新矿物，获国际矿物学会批准命 名，还证实了早期地球深部水可赋存于布里奇曼石晶格中，相关成果发表于国际学术期刊《科学》。 原子是构成物质世界的基本单元，其排列方式和相互作用决定了物质的性质。随着人类对深空、深 地等未知世界和纳米功能材料等应用领域的探索，解析亚微米至纳米尺度物质的晶体结构已成为科学认 知与高新技术发展的重要需求。 （原载于《人民日报》 2026-01-15 13版） 相比于传统设备解析晶体至少需要半小时乃至几天的时间，该解析仪采集数据时间仅需数秒至数十 秒，也就是说在1分钟内可采集到多个数据。 "传统单晶X射线衍射技术难以突破纳米尺度晶体的解析瓶颈，而依赖国外仪器与软件则伴随着成 本高昂、操作复杂与算法受限等多重壁垒，导致我国在深地资源研究等战略领域长期受制于人。"团队 负责人、中国科学院广州地球化学研究所研究员鲜海洋介绍。 样 ...

Core Insights - The region of Wuzhen in Tongxiang, Zhejiang, aims to achieve a GDP of 10.886 billion yuan in 2024, with a growth target of over 6% for 2025 [1] - The integration of digital economy with cultural tourism is expected to create new opportunities for economic development in Wuzhen [1] Group 1: Cultural Tourism Development - Wuzhen has a history of over 1,300 years and has seen a more vibrant cultural tourism market since 2025, attracting visitors to experience local traditions and hospitality [4] - Tourists are not only interested in sightseeing but also in becoming part of the scenery, often dressing in traditional attire for photography [7] - Traditional transportation methods, such as rowing boats, have transitioned into cultural tourism experiences, enhancing the visitor experience [8] Group 2: Digital Economy Integration - The Wuzhen Supercomputing Center, with a capacity of 18 exaflops, supports various industries by providing significant computational power, equivalent to the continuous operation of 14 billion people for four years [8] - A life sciences research company has seen a tenfold increase in data transmission speed and a 30% reduction in costs due to its connection with the supercomputing center [10] - The company plans to double its production capacity after relocating to Wuzhen, with a significant portion of its orders destined for international markets [12] Group 3: Policy and Economic Strategy - Experts from the National Development and Reform Commission highlight Wuzhen's dual-driven model of digital economy and cultural tourism, which expands new consumption scenarios and promotes sustainable economic development [16] - The integration of "Internet+" with cultural tourism is creating a new model that enhances the tourism industry and extends its value chain [18] - Wuzhen is establishing an ecosystem that combines exhibition economy, digital industry, and tourism services, fostering a positive cycle of flow, industry, and talent [18]