Simulation of Flagellated Bacteria Near a Solid Surface: Effects of Flagellar Morphology and Ionic Strength

[2506.19271] Simulation of Flagellated Bacteria Near a Solid Surface: Effects of Flagellar Morphology and Ionic Strength Skip to main content Search Submit Donate Log in Condensed Matter > Soft Condensed Matter arXiv:2506.19271 (cond-mat) [Submitted on 24 Jun 2025 ( v1 ), last revised 25 Aug 2026 (this version, v2)] Title: Simulation of Flagellated Bacteria Near a Solid Surface: Effects of Flagellar Morphology and Ionic Strength Authors: Baopi Liu , Bowen Jin , Ning An View PDF HTML (experimental) Abstract: This study systematically investigates the three-stage process of bacterial surface entrapment, characterized by its height and inclination angle. Initially, bacteria swim towards the surface at an approach velocity proportional to motor rotation frequency. Subsequently, the cotangent of the inclination angle decays exponentially with the product of the motor rotation frequency and time during reorientation. Finally, under the combined action of near-field hydrodynamic interactions and DLVO forces, bacteria reach a stable fixed point near the surface. Bacteria with left-handed chiral flagella exhibit a clockwise circular motion on the surface. The stable heights, inclination angles, and radii of curvature of these circular trajectories are collectively determined by the flagellar morphology and ionic strength of the electrolyte solution. Specifically, increasing the contour length of the flagellum reduces the stable inclination angle and increases the radius of curvature. In contrast, decreasing the ionic strength increases the stable height and radius of curvature, while also decreasing the stable inclination angle. Typically, the stable inclination angle falls within $(\pi/2,\pi)$, the stable height ranges from several nanometers to over one hundred nanometers, and the radius of curvature spans several to tens of micrometers. Our work explains the observed dispersion of the stable heights. Subjects: Soft Condensed Matter (cond-mat.soft) Cite as: arXiv:2506.19271 [cond-mat.soft] (or arXiv:2506.19271v2 [cond-mat.soft] for this version) https://doi.org/10.48550/arXiv.2506.19271 Focus to learn more arXiv-issued DOI via DataCite Journal reference: Chinese Journal of Physics, 102, 768-780 (2026) Related DOI : https://doi.org/10.1016/j.cjph.2026.04.03 Focus to learn more DOI(s) linking to related resources Submission history From: Baopi Liu [ view email ] [v1] Tue, 24 Jun 2025 03:05:59 UTC (1,513 KB) [v2] Tue, 25 Aug 2026 07:28:29 UTC (1,529 KB) Full-text links: Access Paper: View PDF HTML (experimental) TeX Source view license Current browse context: cond-mat.soft < prev | next > new | recent | 2025-06 Change to browse by: cond-mat References & Citations SciX Google Scholar Semantic Scholar export BibTeX citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer ( What is the Explorer? ) Connected Papers Toggle Connected Papers ( What is Connected Papers? ) Litmaps Toggle Litmaps ( What is Litmaps? ) scite.ai Toggle scite Smart Citations ( What are Smart Citations? ) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv ( What is alphaXiv? ) Links to Code Toggle CatalyzeX Code Finder for Papers ( What is CatalyzeX? ) DagsHub Toggle DagsHub ( What is DagsHub? ) GotitPub Toggle Gotit.pub ( What is GotitPub? ) Huggingface Toggle Hugging Face ( What is Huggingface? ) ScienceCast Toggle ScienceCast ( What is ScienceCast? ) Demos Demos Replicate Toggle Replicate ( What is Replicate? ) Spaces Toggle Hugging Face Spaces ( What is Spaces? ) Spaces Toggle TXYZ.AI ( What is TXYZ.AI? ) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower ( What are Influence Flowers? ) Core recommender toggle CORE Recommender ( What is CORE? ) IArxiv recommender toggle IArxiv Recommender ( What is IArxiv? ) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs . Which authors of this paper are endorsers? | Disable MathJax ( What is MathJax? ) We gratefully acknowledge support from our major funders , member institutions , and all contributors. About · Help · Contact · Subscribe · Copyright · Privacy · Accessibility · Operational Status (opens in new tab)

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