Active nematic pumps

[2407.09960] Active nematic pumps Skip to main content Search Submit Donate Log in Search arXiv Press Enter to search · Advanced search Condensed Matter > Soft Condensed Matter arXiv:2407.09960 (cond-mat) [Submitted on 13 Jul 2024 ( v1 ), last revised 19 May 2025 (this version, v2)] Title: Active nematic pumps Authors: Ignasi Vélez-Ceron , Rodrigo C.V. Coelho , Pau Guillamat , Marc Vergés-Vilarrubia , Margarida Telo da Gama , Francesc Sagués , Jordi Ignés-Mullol View a PDF of the paper titled Active nematic pumps, by Ignasi V\'elez-Ceron and 6 other authors View PDF HTML (experimental) Abstract: Microfluidics involves the manipulation of flows at the microscale, typically requiring external power sources to generate pressure gradients. Alternatively, harnessing flows from active fluids, which are usually chaotic, has been proposed as a paradigm for the development of micro-machines. Here, by combining experimental realizations and simulations, we demonstrate that the addition of triangular-shaped inclusions into an active nematic gel can locally break the fore-aft symmetry of active turbulence and stabilize flow fields with self-pumping capabilities. The proposed strategy has enabled us to generate wall-free and self-powered microfluidic systems capable of both cargo transport and mixing along with the downstream flow. We analyze the performance of these active pumps, both isolated and within cooperative ensembles in terms of their output velocity and hydrostatic pressure buildup. Finally, we demonstrate strategies to incorporate them into specifically designed microfluidic platforms to advantageously tailor the geometry of active flows. Our results reveal new possibilities for leveraging the self-organized mechanodynamics of active fluids. Comments: Supplementary figures and videos at DOI https://doi.org/10.17605/OSF.IO/N8G4C Subjects: Soft Condensed Matter (cond-mat.soft) Cite as: arXiv:2407.09960 [cond-mat.soft] (or arXiv:2407.09960v2 [cond-mat.soft] for this version) https://doi.org/10.48550/arXiv.2407.09960 Focus to learn more arXiv-issued DOI via DataCite Journal reference: PNAS 122 (46) e2427103122 (2025) Related DOI : https://doi.org/10.1073/pnas.2427103122 Focus to learn more DOI(s) linking to related resources Submission history From: Jordi Ignes-Mullol [ view email ] [v1] Sat, 13 Jul 2024 18:01:40 UTC (31,473 KB) [v2] Mon, 19 May 2025 07:42:15 UTC (31,398 KB) Full-text links: Access Paper: View a PDF of the paper titled Active nematic pumps, by Ignasi V\'elez-Ceron and 6 other authors View PDF HTML (experimental) TeX Source view license Current browse context: cond-mat.soft < prev | next > new | recent | 2024-07 Change to browse by: cond-mat References & Citations NASA ADS Google Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... Data provided by: 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) Major funding support from

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