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- W4313856081 abstract "Microswimmers exhibit more diverse behavior in quasi-two dimensions than in three dimensions. Such behavior remains elusive due to the analytical difficulty of dealing with two parallel solid boundaries. The existence of additional obstacles in quasi-two dimensional systems further complicates the analysis. Combining experiments and hydrodynamic simulations, we investigate how the spatial dimension affects the interactions between microswimmers and obstacles. We fabricated microscopic pillars in quasi-two dimensions by etching glass coverslips and observed bacterial swimming among the pillars. Bacteria got trapped around the circular pillars and the trapping efficiency increased as the quasi-two-dimensionality was increased or as the curvature of the pillars was decreased. Numerical simulations of the simplest situation of a confined squirmer showed anomalous increase of hydrodynamic attractions, establishing that the enhanced interaction is a universal property of quasi-two-dimensional microhydrodynamics. We also demonstrated that the local curvature of the obstacle controls the trapping efficiency by experiments with elliptic pillars." @default.
- W4313856081 created "2023-01-10" @default.
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- W4313856081 date "2023-01-09" @default.
- W4313856081 modified "2023-10-14" @default.
- W4313856081 title "Quasi-two-dimensional bacterial swimming around pillars: Enhanced trapping efficiency and curvature dependence" @default.
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- W4313856081 doi "https://doi.org/10.1103/physreve.107.014602" @default.
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