转自：北京日报客户端 稀土纳米晶 是发光材料中的"绝缘宝石" 虽具有巨大的发光潜力 却因自身局限无法被电流直接"点亮" 成为其 为解决电致发光器件中的研究和应用难题 带来了新的突破口 实现光电技术产业化应用的根本瓶颈 清华大学深圳国际研究生院 韩三阳副教授团队与合作者 为稀土纳米晶设计了一件独特的 "能量转换外衣" 将能量高效传递给稀土纳米晶的有机分子界面 站论文截图 相关研究成果以 "捕获电生激子实现可调谐的稀土纳米晶电致发光" （Electro-generated excitons for tunable lanthanide electroluminescence）为题 Nature 网 于北京时间11月20日 在线发表于《自然》（Nature） 稀土纳米晶（镧系掺杂纳米晶），具有发光颜色可调、发光谱线窄、发光稳定性高等先天优势，一直被 视为电致发光材料的"潜力股"。 然而，当21世纪的技术浪潮转向以发光二极管（LED）、有机发光二极管（OLED）为代表的直流电致 发光器件，性能卓越却无法直接导电的稀土材料陷入了"绝缘困境"。 韩三阳表示："稀土材料的绝缘特性，使电流难以注入和传输其中，因此其无法像半导 ...

Core Insights - The 27th China Association for Science and Technology Annual Conference emphasized a return to academic essence, fostering an environment for open discussions on hot topics and controversial issues [1][2] - The conference featured 98 specialized forums focusing on high-risk, high-reward non-consensus topics that could lead to significant technological breakthroughs [1][2] - A notable shift towards youth engagement was observed, with over half of the 7,000 attendees being under 40 years old, highlighting the increasing role of young researchers in academic discussions [2][4] Group 1 - The conference atmosphere encouraged participants to focus on academic discussions rather than formalities, with traditional elements like red carpets and free giveaways being eliminated [2] - The integration of forums with academic journals provided new opportunities for young scholars to present and refine their research, enhancing the quality of their work [4] - The event facilitated cross-disciplinary collaborations, particularly in discussions surrounding the intersection of psychology and artificial intelligence [1][2] Group 2 - Young researchers took on active roles, such as academic secretaries, allowing them to shape discussions and engage directly with established experts [3][4] - The conference's design aimed to maximize academic intensity by streamlining the agenda and focusing on substantive content [2] - The presence of a significant number of young attendees indicates a generational shift in the academic landscape, with increased participation from emerging scientists [2][4]

Core Viewpoint - The article discusses the expansion of high-quality undergraduate programs in China, highlighting the increase in enrollment numbers at top universities while also addressing the reduction of liberal arts programs, suggesting a shift towards interdisciplinary studies and the integration of liberal arts with science and technology [1][2][3]. Group 1: Expansion of Undergraduate Programs - The Chinese government aims to increase the enrollment of "double first-class" universities, with an additional 20,000 students planned for 2025, following a previous increase of 16,000 students [1]. - Tsinghua University and Peking University have announced plans to expand their undergraduate admissions by 150 students each, focusing on fields such as artificial intelligence and clinical medicine [5][6]. - Other 985 universities, including Shanghai Jiao Tong University and Xi'an Jiaotong University, are also expanding their enrollment, with a focus on emerging fields like AI, integrated circuits, and biomedical sciences [5][7]. Group 2: Reduction of Liberal Arts Programs - The trend of reducing liberal arts programs has sparked discussions, with Fudan University's president stating that the proportion of liberal arts admissions will decrease from 30-40% to 20% [2][9]. - Despite the reduction, data from the C9 university alliance indicates that liberal arts programs will not disappear, but rather undergo adjustments to better align with societal needs [9][11]. - The article emphasizes that while liberal arts may face cuts, they still hold significant importance in comprehensive universities, with a substantial number of students and faculty dedicated to these fields [11][13]. Group 3: Interdisciplinary Focus - The article suggests that the future of liberal arts lies in interdisciplinary integration, with universities developing programs that combine liberal arts with science and technology [3][15]. - Examples include Tsinghua University offering cross-disciplinary programs in political economy and creative design, and Fudan University launching new programs like neurolinguistics and data intelligence [18][19]. - The shift towards interdisciplinary studies is seen as a response to the evolving job market and societal demands, indicating a need for graduates who possess a blend of skills from both liberal arts and sciences [16][17].