Confinement-Induced Pumping of Chiral Active Fluids
Abstract
Chiral active fluids, composed of continuously rotating active constituents, exhibit a wealth of nonequilibrium phenomena arising from the interplay of activity, hydrodynamic interactions, and broken mirror symmetry. While these systems naturally generate circulating flows and active turbulence, converting their microscopic rotational motion into directed macroscopic transport remains an open challenge. By means of mesoscale hydrodynamic simulations, here we show that channels with an intrinsic asymmetry result in the spontaneous formation of a persistent net flux in the absence of externally imposed pressure gradients or body forces. Our results can be extrapolated to various geometric confinement strategies providing efficient and versatile strategies for transforming chiral activity into autonomous fluid transport, such that they can be utilized as a promising platform for self-powered microfluidic pumping.
Related
- Emergent hydrodynamics of chiral active fluids: vortices, bubbles and odd diffusion
- Ultrafast Magnetization Induced from Raman-Active Axial Chiral Phonons
- Quantized pumping of boundary Hilbert space in chiral Floquet phases
- Enantiomer-specific pumping of chiral molecules in high-J rotational states
- Order by Inertia in Spinning Active Matter: Holey Fluids and Spin-Textured Crystals
BibTeX
@misc{mecke2026confinementinduced,
title = {{Confinement-Induced Pumping of Chiral Active Fluids}},
author = {Joscha Mecke and Yongxiang Gao and Marisol Ripoll},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.12611},
eprint = {2609.12611},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.12611},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Confinement-Induced Pumping of Chiral Active Fluids
AU - Joscha Mecke
AU - Yongxiang Gao
AU - Marisol Ripoll
PY - 2026
DA - 2026/09/11
PB - arXiv
DO - 10.48550/arxiv.2609.12611
UR - https://arxiv.org/abs/2609.12611
AB - Chiral active fluids, composed of continuously rotating active constituents, exhibit a wealth of nonequilibrium phenomena arising from the interplay of activity, hydrodynamic interactions, and broken mirror symmetry. While these systems naturally generate circulating flows and active turbulence, converting their microscopic rotational motion into directed macroscopic transport remains an open challenge. By means of mesoscale hydrodynamic simulations, here we show that channels with an intrinsic asymmetry result in the spontaneous formation of a persistent net flux in the absence of externally imposed pressure gradients or body forces. Our results can be extrapolated to various geometric confinement strategies providing efficient and versatile strategies for transforming chiral activity into autonomous fluid transport, such that they can be utilized as a promising platform for self-powered microfluidic pumping.
ER -