Group 1 - A rechargeable magnesium battery prototype has been developed by researchers at Tohoku University, overcoming several long-standing challenges in magnesium-based energy storage technology, potentially paving the way for new sustainable and fast-charging battery solutions [2] - A new 3D printing technology has been created by a research team at École Polytechnique Fédérale de Lausanne, allowing for the growth of complex, high-strength metal and ceramic components from ordinary hydrogels, breaking the limitations of traditional photopolymer-based printing [2] - The CRAFT facility, a key system for fusion reactor research, has made significant progress with the successful testing and acceptance of a prototype component, achieving a steady-state thermal load capacity of 20 megawatts per square meter [2] Group 2 - EHang Intelligent has launched its new VT35 eVTOL aircraft, with a pre-sale price in the Chinese market starting at no less than 6.5 million yuan per unit, featuring a range of specifications including a maximum range of 200 km and a maximum takeoff weight of 950 kg [2]

经过5至10轮这样的"生长循环"后，研究人员最后通过加热烧除剩余的水凝胶，留下的便是最终产物， 这是一种保持原始形状、但密度与强度前所未有的金属或陶瓷结构。 在实验中，团队利用该技术成功打印出由铁、银和铜构成的复杂数学晶格结构——旋面体。这种结构兼 具高比强度和复杂几何特征，是航空航天和能源器件中理想的设计形态。测试结果显示，新材料可承受 的压力是传统方法制备材料的20倍，收缩率仅为20%，远低于以往的60%至90%。 团队指出，这项技术特别适用于制造兼顾轻量化与高强度，且结构复杂的三维器件，如传感器、生物医 学设备、能源转换与储存装置等。此外，该技术还可用于制造具有高比表面积、散热性能优异的金属结 构，用于能源技术领域。（记者张佳欣） 现有将聚合物转化为金属或陶瓷的技术，往往会导致材料多孔、强度不足，而且部件会出现严重收缩， 导致变形。为克服这一瓶颈，研究团队提出了独特的解决方案，即先打印形状，再决定材料。 他们首先使用水凝胶打印出一个三维支架。随后，将这一"空白"结构浸入含金属盐的溶液中，使金属离 子渗透并在化学反应下转化为分布均匀的金属纳米颗粒。这个过程可重复多次，最终获得金属含量极高 的复合材料。 据 ...