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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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