通过高速旋转的潜望镜，四面八方的光打在光敏材料上，经过光固化反应，1秒内即可"打印"毫米尺寸物体……近日，经过5年攻关，中国工程院院士戴琼海 教授带领的清华大学成像与智能技术实验室团队研发出计算全息光场3D打印技术，生成毫米尺寸复杂结构的曝光时间仅需0.6秒，较传统体积3D打印曝光速 度提升数十倍。北京时间2月12日，相关研究成果以"基于全息光场合成的亚秒级体积三维打印"为题，发表在国际学术期刊《自然》。 论文共同通讯作者、清华大学副教授吴嘉敏介绍，传统3D打印一般以逐点、逐层打印的方式进行，毫米级物体往往需数十分钟乃至数小时才能完成加工； 此前，科学家提出了计算轴向光刻等体积打印技术，提升了打印速度，但受限于容器需旋转、景深不足等因素，样本在景深外的打印精度显著下降，且只能 使用高粘度材料防止样品下沉，适用范围受较大限制。 相比之下，团队提出的计算全息光场3D打印新技术，创新了光学系统设计，通过高速旋转潜望镜，无需旋转样品，即可生成高分辨率的三维光场分布，进 而构建三维实体。 系统设计图 据介绍，该技术取得多项突破—— 刷新速度：新技术突破逐点、逐层扫描的瓶颈，能快速精准投影复杂三维光场，实验表明，该技术生 ...

Core Insights - Snapmaker U1 3D printer achieved a record crowdfunding amount of $20.61 million on Kickstarter, the highest in its category [1][5] - The product was pre-sold exclusively on JD.com, selling over 2,000 units within 2 hours and becoming the top-selling item in the 3D printing category [1][5] - Snapmaker U1 features the innovative SnapSwap™ independent four-head system, which addresses the efficiency bottlenecks of traditional single-head 3D printers, claiming "5 times speed, 5 times material savings" [1][5] Product Features - The SnapSwap™ system allows for rapid switching between four print heads, completing head changes in under 5 seconds, thus minimizing material waste during color changes [6] - The printer can complete similar four-color printing tasks in just 5-6 hours, achieving up to a 5-fold increase in printing efficiency and saving approximately 80% in material usage compared to traditional single-head printers [2][6] Market Launch - Snapmaker U1 is set to officially launch on JD.com on December 25 [3][6]