ArticleProceedings of the National Academy of Sciences of the United States of America2025
Surface tension between coexisting phases of active Brownian particles.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- The problem of the mechanical surface tension of active Brownian particle interfaces.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Reply to Fernández-Quevedo García et al.: Surface tension in phase-separated active Brownian particles.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
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3 authors.
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Abstract
The confliction between the stable interface in phase-separated active Brownian particles and its negative surface tension, obtained mechanically via the active pressure, has sparked considerable debate about the formula of active surface tension. Based on the intrinsic pressure of active system, we here derive a mechanical expression of active surface tension by calculating the work required to create a differential interface area, while remaining the interfacial profiles of intensive quantities invariant (not considered previously). Our expression yields a significantly positive surface tension that increases with the particle activity, which is further supported by mechanical stability analysis of both steady-state droplet and fluctuating interface. Our work is thus promising to resolve the contradiction related to active surface tension.
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