期刊文献+

Magnetic Actuated Shape-memory Helical Microswimmers with Programmable Recovery Behaviors 被引量:1

下载PDF
导出
摘要 Inspired by bacterial flagella in nature,magnetic helical microswimmer is an ideal model to perform complex task in a low Reynolds number environments.Shape Memory Polymers(SMPs)with desirable properties are considered as one of the most preferred options for the development of small-scale robots.However,fabricating and programming strategies are still challenging.Here,we report an approach to fabricate helical microswimmers based on thermoplastic SMP(polylactic acid).Melt-spun polylactic acid fibers containing magnetic particles were enwound to form helical microstructures.Their shape recovery behaviors were programmed by annealing and pre-deformation.Three forms of helical microswimmers(constant-helix-angle conical helix,constant-pitch conical helix,and straight helix)with controlled morphological parameters were tailored.The obtained microswimmers showed 3D locomotion capability under rotating magnetic fields.The maximum swimming velocity of microswimmers was nearly six body lengths per second,and the near-wall swimming of conical helixes along their sharp end exhibited a smaller drift.Moreover,we demonstrated programmed shape-switching processes(spring-like contraction and elongation,coiling and uncoiling)and self-repairing of the microswimmers.As demonstrations of potential applications,tasks of mobile microstent,cargo delivery,and minimally invasive injection were carried out.The multifunctional shape-memory microswimmers have immense potential in a variety of applications.
出处 《Journal of Bionic Engineering》 SCIE EI CSCD 2021年第4期799-811,共13页 仿生工程学报(英文版)
基金 This research was supported by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China(No.51521003),NSAF(No.U1930110) the Self-Planned Task(No.SKLRS201909B)of State Key Laboratory of Robotics and System(HIT).
  • 相关文献

参考文献3

二级参考文献34

  • 1Ngoc San Ha,Nam Seo Goo.Propulsion Modeling and Analysis of a Biomimetic Swimmer[J].Journal of Bionic Engineering,2010,7(3):259-266. 被引量:5
  • 2B. J. Nelson, I. K. Kaliakatsos, J. J. Abbott. Microrobots for minimally inva- sive medicine. Annu. Rev. Biomed. Eng., 2010, 12(1): 55-85.
  • 3W. Gao, J. Wang. The environmental impact of micro/nanomachines: A review. ACS Nano, 2014, 8(4): 3170-3180.
  • 4L. Zhang, K. E. Peyer, B. J. Nelson. Artificial bacterial flagella for microma- nipulation. Lab Chip, 2010, 10(17): 2203-2215.
  • 5J. J. Abbott, et al. How should microrobots swim? Int. ]. Robot. Res., 2009, 28(11-12): 1434-1447.
  • 6E. M. Purcell. Life at low Reynolds number. Am. ]. Phys., 1977, 45(1): 3-11.
  • 7H. C. Berg, R. A. Anderson. Bacteria swim by rotating their flagellar fila- ments. Nature, 1973, 245(5425): 380-382.
  • 8T. Baba, et al. Construction of Escherichia coli K-12 in-frame, single-gene knockout mutants: The Keio collection. Mol. Syst. Biol. 2006, 2(1): 2006.0008.
  • 9W. R. DiLuzio, et al. Escherichia coli swim on the right-hand side. Nature, 2005, 435(7046): 1271-1274.
  • 10K. E. Peyer, S. Tottori, F. Qiu, L. Zhang, B. J. Nelson. Magnetic helical mi- cromachines. Chemi. Eur. ]., 2013,19(1): 28-38.

共引文献8

同被引文献7

引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部