Melt Electrospinning Writing of Magnetic Microrobots,Advanced Science

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Melt Electrospinning Writing of Magnetic Microrobots
Advanced Science ( IF 14.3 ) Pub Date : 2021-01-04 , DOI: 10.1002/advs.202003177
Yingchun Su _{1,

2,

3} , Tian Qiu _{4,

5} , Wen Song ₆ , Xiaojun Han ₁ , Mengmeng Sun ₇ , Zhao Wang ₁ , Hui Xie ₇ , Mingdong Dong ₂ , Menglin Chen _{2,

3}

Affiliation

The magnetic microrobots actuated by an external magnetic field can access distant, enclosed, and small spaces under fuel‐free conditions, which is apromising technology for manipulation and delivery under microenvironment; however, the complicated fabrication method limits their applications. Herein, three techniques including melt electrospinning writing (MEW), micromolding, and skiving process are combined to successfully mass‐produce tadpole‐like magnetic polycaprolactone/Fe₃O₄ (PCL/Fe₃O₄) microrobot. Importantly, the tadpole‐like microrobots under an external magnetic field can achieve two locomotions: rolling mode and propulsion mode. The rolling motion can approach the working destination quickly with a speed of ≈2 mm s⁻¹. The propulsion motion (0−340 µm s⁻¹) can handle a microcargo. Such a simple and cost‐effective production method shows a great potential for scale‐up fabrication of advanced shape‐design, mass‐production, and multifunctionality microrobot.

中文翻译：

磁性微型机器人的熔融静电纺丝书写

由外部磁场驱动的磁性微型机器人可以在无燃料的条件下进入遥远、封闭、狭小的空间，是微环境下操纵和输送的一种很有前景的技术；然而，复杂的制造方法限制了它们的应用。在此，结合熔融静电纺丝写入（MEW）、微成型和车削工艺三种技术，成功批量生产了蝌蚪状磁性聚己内酯/Fe ₃ O ₄ (PCL/Fe ₃ O ₄ )微型机器人。重要的是，蝌蚪状微型机器人在外部磁场下可以实现两种运动：滚动模式和推进模式。滚动运动可以以约2 mm s ^-1的速度快速接近工作目的地。推进运动（0−340 µm s ^-1 ）可以处理微型货物。这种简单且经济高效的生产方法显示了先进形状设计、大规模生产和多功能微型机器人的放大制造的巨大潜力。

更新日期：2021-02-03

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