实现磁性软微机器人全自动3D打印，精度达50微米。
Automated Fabrication of Magnetic Soft Microrobots
- 设计全自动化3D打印机，支持三维磁化方向精准控制。
- 最高分辨率可达50μm×50μm，较之前提升显著。
- 成功制造蠕虫、夹钳等多类微机器人，适用于生物医疗。
3D打印技术革新了多个行业，也推动了软机器人的发展。然而，磁性软机器人仍面临磁性颗粒定向难等挑战。当前在具有三维磁化方向的3D几何结构自动化制造方面存在明显空白。本文设计了一款全自动化3D打印机，提升了精度、速度与可重复性。该系统实现1.6mm直径的圆形光斑（体素），更新后的光学系统可将分辨率提升至50μm×50μm的方形光斑。通过磁-机械仿真验证了新系统在高分辨率设计上的优势。文中评估了包括'蠕虫'、'夹钳'和'拉链'在内的多种微机器人结构。
原文摘要 · Abstract (English)
The advent of 3D printing has revolutionized many industries and has had similar improvements for soft robots. However, many challenges persist for these functional devices. Magnetic soft robots require the addition of magnetic particles that must be correctly oriented. There is a significant gap in the automated fabrication of 3D geometric structures with 3D magnetization direction. A fully automated 3D printer was designed to improve accuracy, speed, and reproducibility. This design was able to achieve a circular spot size (voxels) of 1.6mm in diameter. An updated optical system can improve the resolution to a square spot size of 50$μ$m by 50$μ$m. The new system achieves higher resolution designs as shown through magneto-mechanical simulations. Various microrobots including 'worm', 'gripper' and 'zipper' designs are evaluated with the new spot size.
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