Effect of Electric Field on Partially Pinned Scroll Waves in Excitable Chemical Media.

ABSTRACT: We present an investigation of the dynamics of a scroll wave partially pinned to an inert cylindrical obstacle under electrical forcing in a three-dimensional Belousov-Zhabotinsky excitable medium. The freely rotating part of the scroll wave is forced to drift toward the positive electrode, while the pinned part remains attached to the obstacle, causing the scroll wave filament to elongate and its shape to change over time. Breakups of the elongated filament are also observed before the scroll wave gradually unpins and moves away from the obstacle. We also performed simulations using the Oregonator model to corroborate the experimental findings. In addition, the simulations reveal the detailed dynamics of the scroll wave filament. As the filament elongates and its shape evolves, the filame

SUBMITTER: Khaothong K 

PROVIDER: S-EPMC12355325 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature