dorsal/arxiv
View SchemaCapillary Slinky: Equilibrium and Dynamics of Droplets in a Soft Spring
| Authors | Bidisha Bhatt, Andreas Carlson |
|---|---|
| Categories | |
| ArXiv ID | 2601.10366vv1 |
| URL | https://arxiv.org/abs/2601.10366 |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
Springs can be found in many applications and biological systems, and when these are soft, they easily deform. At small scales, capillarity can induce a force leading to spring deformations when the elastocapillary number is small. We demonstrate through experiments the non-trivial equilibrium shape liquid droplets adopt in these soft springs, which form an annulus, Eruciform, and spherical shapes. When these droplets are set in motion, they display different flow regimes with significant dissipation generated by the internal rotational flow. The static and dynamics of droplets in such a capillary slinky is also used to demonstrate how surface tension can actuate springs by stretching/compression, while providing a way for active flow control in soft springs.
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"date_created": "2026-02-17T05:53:24.229000Z",
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"abstract": "Springs can be found in many applications and biological systems, and when these are soft, they easily deform. At small scales, capillarity can induce a force leading to spring deformations when the elastocapillary number is small. We demonstrate through experiments the non-trivial equilibrium shape liquid droplets adopt in these soft springs, which form an annulus, Eruciform, and spherical shapes. When these droplets are set in motion, they display different flow regimes with significant dissipation generated by the internal rotational flow. The static and dynamics of droplets in such a capillary slinky is also used to demonstrate how surface tension can actuate springs by stretching/compression, while providing a way for active flow control in soft springs.",
"arxiv_id": "2601.10366",
"authors": [
"Bidisha Bhatt",
"Andreas Carlson"
],
"categories": [
"cond-mat.soft",
"physics.flu-dyn"
],
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "Capillary Slinky: Equilibrium and Dynamics of Droplets in a Soft Spring",
"url": "https://arxiv.org/abs/2601.10366",
"version": "v1"
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