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科学圆桌会·趣谈2025| 物理学家:这一年,我们破解了晶体生长的“魔法”
Xin Hua She· 2025-12-30 08:40
那最幸福的时刻,莫过于当我们第一次在显微镜下观测到,用新方法制备出来的晶体排列得整整齐齐 时,那种震撼无法言喻。 2025年,我们将自主首创的晶体制备方法应用到光学晶体生长领域。通俗地说,就是用一种类似"顶竹 笋""拧魔方"的方法,让光学晶体生长,得到了一种"超薄转角光学晶体"。 作为一个研究凝聚态物理的科学家,这一年,最艰难的时刻莫过于要推翻全世界沿用的传统理论,承认 旧路走不通,在迷雾中寻找新方向。 这是制备的氮化硼光学晶体照片,照片中间长方形的样品区域是氮化硼材料。新华社发(作者供图) 这些名词是不是听起来一头雾水?这就是我写这篇科普文章的目的,就是告诉大家:基础科学研究很有 趣,它就在我们身边。 比如,什么是凝聚态物理?这个词儿听起来很高深,其实它就是研究微观粒子如何"排队"的学问,就像 水分子"听指挥"整齐排列就能结成冰一样。 什么叫晶体?它是计算机、通信、航空、激光技术等领域的关键材料。过去几十年,国际上通用的造晶 体方法,就像是"盖房子"——这相当于先铺好地基(晶种),然后把原子一块块搬运过来,在表面一层 层垒上去。 这种方法有个致命弱点:楼层一旦盖高了,稍微有一块砖没对齐,后面就会跟着歪,甚至 ...
科学家直接观测到重费米子量子纠缠
Ke Ji Ri Bao· 2025-08-07 23:34
Core Insights - Scientists from Osaka University and Hiroshima University have observed quantum entanglement in cerium rhodium tin (CeRhSn) material, regulated by Planck time, marking a significant advancement in quantum computing research [1][2] - The study published in the journal "npj Quantum Materials" highlights the unique properties of heavy fermions and their potential applications in solid-state quantum computers [1][2] Group 1: Quantum Entanglement and Heavy Fermions - The research confirms that the behavior of heavy fermions aligns with the mathematical description of quantum entanglement, with entanglement duration influenced by Planck time [2] - Heavy fermions are formed due to strong interactions between conduction electrons and localized magnetic electrons, leading to unconventional superconductivity and other unique properties [1] - The unique lattice structure of CeRhSn exhibits geometric frustration, preventing the system from reaching a stable energy state, thus resulting in various quantum phenomena [1] Group 2: Implications for Quantum Computing - The findings provide a deeper understanding of the nature of quantum entanglement and the complex interactions between heavy fermions, paving the way for manipulating quantum states in solid materials [2] - Continued research on these entangled states could offer new solutions for quantum communication and quantum computing technologies [2]
重磅!Quantum Design拟6000万英镑收购牛津仪器纳米科学业务
仪器信息网· 2025-06-17 06:28
Core Viewpoint - Quantum Design announced the acquisition of the NanoScience Division of Oxford Instruments for a total price of £60 million in cash, expected to be completed by the end of September 2025, pending regulatory approval [2][3][8]. Group 1: Acquisition Details - The acquisition will merge two leading companies in the low-temperature systems field, combining Quantum Design's advanced physical measurement systems with Oxford Instruments' ultra-low temperature instrumentation [3][4]. - The deal includes a potential deferred payment of up to £3 million linked to future revenue from quantum expansion systems [8]. Group 2: Financial Performance - The NanoScience Division generated approximately £59 million in revenue and £1.1 million in adjusted operating profit for the fiscal year 2025 [8]. - Post-sale, Oxford Instruments plans to return up to £50 million to shareholders through share buybacks, leveraging a strong balance sheet and expected cash from the sale [9]. Group 3: Strategic Implications - The merger is expected to create synergies in product offerings and expertise, enhancing the combined company's ability to serve a wide range of applications in materials science research, including next-generation storage technology and quantum computing [4]. - The CEO of Oxford Instruments stated that the sale aligns with the group's strategy to focus on areas with the best growth opportunities, particularly in materials analysis, semiconductors, and healthcare [11].