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arXiv · 2606.21324

Quasi-one-dimensional motion of an active MXene sheet driven by chemo-hydrodynamic waves

Hui Wang·Huan Liu·Ling Yuan·Zihao Liu·Meng Zhang·Irving R Epstein·Qingyu Gao
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Abstract

Signal-driven motion is widespread in natural and artificial systems, yet quantitative characterization of how transient chemo-hydrodynamic waves are converted into mechanical driving forces remains limited. Here, we investigate the self-propulsion of a MXene sheet asymmetrically coated with catalase in hydrogen peroxide solution. By combining dual-view particle image velocimetry experiments and numerical simulations reveal that active motion of the sheet is driven by chemo-hydrodynamic waves and exhibits direct-wave motion, the driving force of which is analyzed in terms of the shear stress on the sheet surface caused by chemo-hydrodynamic waves. This work suggests theoretical principles for designing and controlling hydrodynamically driven active motion.

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Hui Wang, Huan Liu, Ling Yuan, Zihao Liu, Meng Zhang, Irving R Epstein, Qingyu Gao. 2026-06-19. Quasi-one-dimensional motion of an active MXene sheet driven by chemo-hydrodynamic waves. https://arxiv.org/abs/2606.21324

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