静电纺丝场：三维纳米纤维材料计算作为设计方法
Electrospun Fields: 3D Nano-Fiber Material Computation as Design Method
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中文总结 AI 辅助
提出机器人静电纺丝平台，通过移动发射器与可编程接地实现三维凹面纳米纤维沉积，建立材料目录与支架分类法，开源工具路径代码。
中文摘要 AI 辅助
我们提出了一种机器人静电纺丝平台和设计方法，用于将纳米纤维膜沉积到非平面、三维导电几何体上。传统静电纺丝依赖于固定发射器和平面接地收集器，这限制了沉积仅能在平坦基底上进行：在凹面几何体上，场屏蔽阻止纤维到达凹陷区域，而材料则跨越高起的特征形成桥接。我们通过一个与六轴UR20机械臂集成的定制末端执行器来解决这一问题。该工具携带一个由步进电机驱动的局部注射泵，可独立于方向维持一致的聚合物流动，并将高压直流电（最高25 kV）直接路由到安装在机械臂上的针头，使机械臂成为具有位置、方向、工作距离和移动速度完全运动学控制的移动发射器。连续沿表面法线重新定向发射器的刀具路径使得能够到达固定轴系统无法触及的凹面拓扑结构。我们在两部分中表征了由此产生的沉积行为。一个包含四种生物相容性聚合物体系（PEO、PVA、角蛋白-PEO、丝素-PEO）的目录建立了操作窗口，报告了每种体系的沉积速度、射流稳定性、纤维尺寸、排列和耐久性。一个涵盖几何基元、混合组合以及方形、三角形和六边形晶格的3D打印导电支架分类法将收集器几何形状与纤维排列、密度和跨空隙桥接联系起来。我们还演示了可编程接地，其中阵列中选择性通电的引脚在不改变物理几何形状的情况下引导沉积。组装说明和刀具路径生成代码以开源仓库形式发布。
英文摘要
We present a robotic electrospinning platform and design method for depositing nanofiber membranes onto non-planar, three-dimensional conductive geometries. Conventional electrospinning relies on fixed emitters and planar grounded collectors, which restricts deposition to flat substrates: on concave geometries, field shielding prevents fibers from reaching recessed regions, and material bridges across elevated features instead. We address this with a custom end-effector integrated with a six-axis UR20 arm. The tool carries a localized stepper-driven syringe pump that maintains consistent polymer flow independent of orientation, and routes high-voltage DC (up to 25 kV) directly to a robot-mounted needle, turning the arm into a mobile emitter with full kinematic control over position, orientation, working distance, and traversal velocity. Toolpaths that continuously reorient the emitter along surface normals give access to concave topologies unreachable by fixed-axis systems. We characterize the resulting deposition behavior in two parts. A catalog of four bio-compatible polymer systems (PEO, PVA, keratin-PEO, silk-PEO) establishes the operating envelope, reporting deposition speed, jet stability, fiber size, alignment, and durability for each. A taxonomy of 3D-printed conductive scaffolds spanning geometric primitives, hybrid compositions, and square, triangular, and hexagonal lattices links collector geometry to fiber alignment, density, and cross-void bridging. We also demonstrate programmable grounding, in which selectively energized pins in an array steer deposition without changing physical geometry. Assembly instructions and toolpath-generation code are released as an open-source repository.
发表机构
- MIT（麻省理工学院）
- Harvard University（哈佛大学）
- MIT Media Lab（麻省理工学院媒体实验室）
机构由 AI 辅助整理，请以论文原文为准。
