Confined Bubble-Propelled Microswimmers in Capillaries: Wall Effect, Fuel Deprivation, and Exhaust Product Excess

Bahareh Khezri, Filip Novotný, James Guo Sheng Moo, Muhammad Zafir Mohamad Nasir, Martin Pumera

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Self-propelled autonomous nano/microswimmers are at the forefront of materials science. These swimmers are expected to operate in highly confined environments, such as between the grains of soil or in the capillaries of the human organism. To date, little attention is paid to the problem that in such a confined environment the fuel powering catalytic nano/microswimmers can be exhausted quickly and the space can be polluted with the product of the catalytic reaction. In addition, the motion of the nano/microswimmers may be influenced by the confinement. These issues are addressed here, showing the influence of the size of the capillary and length of the micromotor on the motion and the influence of the depletion of the fuel and excess of the exhaust products. Theoretical modeling is provided as well to bring further insight into the observations. This article shows challenges that these systems face and stimulates research to overcome them.

Original languageEnglish
Article number2000413
JournalSmall
Volume16
Issue number27
DOIs
Publication statusPublished - 2020 Jul 1

Bibliographical note

Funding Information:
This work was supported by the project Advanced Functional Nanorobots (reg. No.CZ.02.1.01/0.0/0.0/15_003/0000444 financed by the EFRR).

Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)

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