Programmable Design and Performance of Modular Magnetic Microswimmers
Programmable Design and Performance of Modular Magnetic Microswimmers
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DOI：
10.1002/adma.202006237
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发表时间：
2021-03-14
影响因子：
29.4
通讯作者：
Tavacoli，Joe
中科院分区：
文献类型：
--
作者：
Pauer，Christoph;du Roure，Olivia;Tavacoli，Joe
合成仿生微泳者是有前途的代理人在体内的医疗保健和重要的框架，以促进运动策略和集体运动在微观尺度上的理解。然而，以设计灵活性和大量构建这些装置仍然是一个挑战。在这里，通过超顺磁性微模块的编程形状和排列来组装这种游泳者，朝着迎接这一挑战迈出了一步。该方法的设计灵活性的能力，证明通过组装的各种游泳建筑。在它们的驱动下，在所有情况下都可以发现以粘性和磁力平衡为特征的划水，但是由一系列大小分级的三角形模块形成的游泳者比包括圆形“头”和细长尾巴的更传统的设计游得更快。将性能与设计联系起来，提取规则，为第二代游泳运动员的构造提供信息，该运动员具有短尾巴和针对速度优化的细长头部。它的快速运动归因于更好地打破跳动对称性的中风和在高频率下充分弯曲的能力。最后，通过组装和游动一群基于三角形的架构来展示大规模生产，以揭示四种类型的游泳者耦合。
Synthetic biomimetic microswimmers are promising agents for in vivo healthcare and important frameworks to advance the understanding of locomotion strategies and collective motion at the microscopic scale. Nevertheless, constructing these devices with design flexibility and in large numbers remains a challenge. Here, a step toward meeting this challenge is taken by assembling such swimmers via the programmed shape and arrangement of superparamagnetic micromodules. The method's capacity for design flexibility is demonstrated through the assembly of a variety of swimmer architectures. On their actuation, strokes characterized by a balance of viscous and magnetic forces are found in all cases, but swimmers formed from a series of size‐graded triangular modules swim quicker than more traditional designs comprising a circular “head” and a slender tail. Linking performance to design, rules are extracted informing the construction of a second‐generation swimmer with a short tail and an elongated head optimized for speed. Its fast locomotion is attributed to a stroke that better breaks beating symmetry and an ability to beat fully with flex at high frequencies. Finally, production at scale is demonstrated through the assembly and swimming of a flock of the triangle‐based architectures to reveal four types of swimmer couplings.