English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Interactions between microorganisms and solid boundaries play an importantrole in biological processes, like egg fertilisation, biofilm formation andsoil colonisation, where microswimmers move within a structured environment.Despite recent efforts to understand their origin, it is not clear whetherthese interactions can be understood as fundamentally of hydrodynamic origin orhinging on the swimmer's direct contact with the obstacle. Using a combinationof experiments and simulations, here we study in detail the interaction of thebiflagellate green alga \textit{Chlamydomonas reinhardtii}, widely used as amodel puller microorganism, with convex obstacles, a geometry ideally suited tohighlight the different roles of steric and hydrodynamic effects. Our resultsreveal that both kinds of forces are crucial for the correct description of theinteraction of this class of flagellated microorganisms with boundaries.

Microalgae scatter off solid surfaces by hydrodynamic and contact forces