Abstract
Experimental evidence of the influence of an electric field on chemical waves is found in the Belousov-Zhabotinskii (BZ) medium. Effects found include (1) the variation of wave velocity with field, (2) the existence of a critical field beyond which waves propagating toward the negative electrode are annihilated, and (3) a new crescent-shaped wave phenomenon. The experimental findings are in qualitative agreement with earlier theoretical predictions based on a new reduction of the FKN kinetics. A theory for the crescent wave is also presented.
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