A novel reaction-diffusion system based on minority-carrier transport in solid-state CMOS devices

We propose a novel silicon device for imitating autocatalytic and dissipative phenomena of reaction-diffusion (RD) systems, using the minority carriers in semiconductors as diffusion substances. Thus, the diffusion of chemical substances in the RD system is imitated by that of the minority carriers. The chemical reaction, which results in the change of the concentration of the substances, is imitated by a reaction device. Numerical simulations show that the proposed RD device can successfully produce propagating waves in the same way as natural RD systems. Our results indicate that the proposed RD device will be a useful tool for developing novel hardware based on the RD mechanism