Fight the flow: The role of shear in artificial rheotaxis for individual and collective motion

Remmi Baker, Joshua E. Kauffman, Abhrajit Laskar, Oleg E. Shklyaev, Mykhailo Potomkin, Leonardo Dominguez-Rubio, Henry Shum, Yareslie Cruz-Rivera, Igor Aronson, Anna C. Balazs, Ayusman Sen

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

To navigate in complex fluid environments, swimming organisms like fish or bacteria often reorient their bodies antiparallel or against the flow, more commonly known as rheotaxis. This reorientation motion enables the organisms to migrate against the fluid flow, as observed in salmon swimming upstream to spawn. Rheotaxis can also be realized in artificial microswimmers-self-propelled particles that mimic swimming microorganisms. Here we study experimentally and by computer simulations the rheotaxis of self-propelled gold-platinum nanorods in microfluidic channels. We observed two distinct modes of artificial rheotaxis: a high shear domain near the bottom wall of the microfluidic channel and a low shear regime in the corners. Reduced fluid drag in the corners promotes the formation of many particle aggregates that rheotax collectively. Our study provides insight into the biomimetic functionality of artificial self-propelled nanorods for dynamic self-assembly and the delivery of payloads to targeted locations.

Original languageEnglish (US)
Pages (from-to)10944-10951
Number of pages8
JournalNanoscale
Volume11
Issue number22
DOIs
StatePublished - Jun 14 2019

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Nanorods
Microfluidics
Fluids
Biomimetics
Platinum
Gold
Microorganisms
Fish
Self assembly
Drag
Flow of fluids
Bacteria
Computer simulation
Swimming

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Baker, R., Kauffman, J. E., Laskar, A., Shklyaev, O. E., Potomkin, M., Dominguez-Rubio, L., ... Sen, A. (2019). Fight the flow: The role of shear in artificial rheotaxis for individual and collective motion. Nanoscale, 11(22), 10944-10951. https://doi.org/10.1039/c8nr10257k
Baker, Remmi ; Kauffman, Joshua E. ; Laskar, Abhrajit ; Shklyaev, Oleg E. ; Potomkin, Mykhailo ; Dominguez-Rubio, Leonardo ; Shum, Henry ; Cruz-Rivera, Yareslie ; Aronson, Igor ; Balazs, Anna C. ; Sen, Ayusman. / Fight the flow : The role of shear in artificial rheotaxis for individual and collective motion. In: Nanoscale. 2019 ; Vol. 11, No. 22. pp. 10944-10951.
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Baker, R, Kauffman, JE, Laskar, A, Shklyaev, OE, Potomkin, M, Dominguez-Rubio, L, Shum, H, Cruz-Rivera, Y, Aronson, I, Balazs, AC & Sen, A 2019, 'Fight the flow: The role of shear in artificial rheotaxis for individual and collective motion', Nanoscale, vol. 11, no. 22, pp. 10944-10951. https://doi.org/10.1039/c8nr10257k

Fight the flow : The role of shear in artificial rheotaxis for individual and collective motion. / Baker, Remmi; Kauffman, Joshua E.; Laskar, Abhrajit; Shklyaev, Oleg E.; Potomkin, Mykhailo; Dominguez-Rubio, Leonardo; Shum, Henry; Cruz-Rivera, Yareslie; Aronson, Igor; Balazs, Anna C.; Sen, Ayusman.

In: Nanoscale, Vol. 11, No. 22, 14.06.2019, p. 10944-10951.

Research output: Contribution to journalArticle

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Baker R, Kauffman JE, Laskar A, Shklyaev OE, Potomkin M, Dominguez-Rubio L et al. Fight the flow: The role of shear in artificial rheotaxis for individual and collective motion. Nanoscale. 2019 Jun 14;11(22):10944-10951. https://doi.org/10.1039/c8nr10257k