Microalgae Scatter off Solid Surfaces by Hydrodynamic and Contact Forces.

  title={Microalgae Scatter off Solid Surfaces by Hydrodynamic and Contact Forces.},
  author={Matteo Contino and Enkeleida Lushi and Idan Tuval and Vasily Kantsler and Marco Polin},
  journal={Physical review letters},
  volume={115 25},
Interactions between microorganisms and solid boundaries play an important role in biological processes, such as egg fertilization, biofilm formation, and soil colonization, where microswimmers move within a structured environment. Despite recent efforts to understand their origin, it is not clear whether these interactions can be understood as being fundamentally of hydrodynamic origin or hinging on the swimmer's direct contact with the obstacle. Using a combination of experiments and… 

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