10111 2025 eng 1086 1092 7 89 article 0 2025-07-16 -- -- We explore the dynamics of a one-dimensional chain of paramagnetic colloidal particles in a periodic potential. The model accounts for a constant external force, along with magnetic dipolar attraction and hard-core repulsive interactions between particles. Numerical simulations reveal the emergence of a traveling kink – a chain defect propagating along the chain. We show that the kink emerges beyond a critical force threshold and identify parameter regimes corresponding to distinct dynamic modes such as a pinned kink, a running kink, a cluster kink, and chain drift. Bull. Russ. Acad. Sci. Phys. 10.1134/S1062873825711742 1062-8738 yes 2025-03-31 publish Mikhail N. Kourov Arthur Straube Anna E. Samoilova Arthur Straube Numerical Mathematics Straube, Arthur Modeling and Simulation of Complex Processes MathPlusAA1-18