One-Dimensional Belousov-Zhabotinsky Chemical Wave System as an Electron Drift Analog

We use chemical reaction-diffusion (RD) waves in narrow channels to visually model electron drift velocity in a wire. By varying the initial conditions of an excitable Belousov-Zhabotinsky (BZ) system, we can create RD wave velocities in the range of typical electron drift speeds in conductors. The speed of the easily observable RD wave can then be compared with a theoretical electron drift velocity value to explore the effects of wire radius, current traveling through the wire, and the material composition. We present various chemical recipes to create desired electron drift velocities, providing a viable method for creating a visual aid to understanding electron drift velocity.