Constrained motion of self-propelling eccentric disks linked by a spring

• DOI: 10.1063/5.0217158
• Publication Date: 2024-08-14T10:38:49Z
• Authors: Tian-liang Xu; Chao-ran Qin; Bin Tang; Jin-cheng Gao; Jiankang Zhou; Kang Chen; Tian Hui Zhang; Wen-de Tian
• Keywords: Rigidity (electromagnetism); Elasticity

It has been supposed that the interplay of elasticity and activity plays a key role in triggering non-equilibrium behaviors biological systems. However, experimental model system is missing to investigate spatiotemporally dynamical phenomena. Here, an active chain, where eccentric-disks are linked by spring, designed study activity, elasticity, friction. Individual chain exhibits longitudinal transverse motions; however, it starts self-rotate when pinning one end self-beat clamping end. In addition, our eccentric-disk can qualitatively reproduce such explain unusual self-rotation first disk around its geometric center. Furthermore, structure dynamics long chains were studied via simulations without steric interactions. was found hairpin conformation emerges free motion, while constrained motions, rotational beating frequencies scale with flexure number (the ratio self-propelling force bending rigidity), χ, as ∼(χ)4/3. Scaling analysis suggests results from balance between energy dissipation. Our findings show topological constraints play vital synergy behaviors.