Fundamental modes of swimming correspond to fundamental modes of shape: engineering I-, U-, and S-shaped swimmers

Priyanka Sharan, Charlie Maslen, Berk Altunkeyik, Ivan Rehor, Juliane Simmchen, Tom Montenegro-Johnson

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Abstract

Hydrogels have received increased attention due to their biocompatible material properties, adjustable porosity, ease of functionalization, tuneable shape, and Young's moduli. Initial work has recognized the potential that conferring out-of-equilibrium properties to these on the microscale holds and envisions a broad range of biomedical applications. Herein, a simple strategy to integrate multiple swimming modes into catalase-propelled hydrogel bodies, produced via stop-flow lithography (SFL), is presented and the different dynamics that result from bubble expulsion are studied. It is found that for “Saturn” filaments, with active poles and an inert midpiece, the fundamental swimming modes correspond to the first three fundamental shape modes that can be obtained by buckling elastic filaments, namely, I, U, and S-shapes.
Original languageEnglish
JournalAdvanced Intelligent Systems
Early online date28 Jul 2021
DOIs
Publication statusE-pub ahead of print - 28 Jul 2021

Keywords

  • active matter
  • bubble-driven micromotors
  • enzymes
  • microswimmers
  • stop-flow lithography

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