The spatiotemporal dynamics of the hydrogen peroxide-thiosulfate-sulfite-perchlorate acid system was in-vestigated in reaction-diffusion medium. In the Petri dish, pulse waves were discovered, which had the maximum li...The spatiotemporal dynamics of the hydrogen peroxide-thiosulfate-sulfite-perchlorate acid system was in-vestigated in reaction-diffusion medium. In the Petri dish, pulse waves were discovered, which had the maximum life-time and the maximum traveling distance when the initial concentration of thiosulfate was increased. In addition, pulse waves contracted back before disappearing, and the pulse waves with red spot were observed when the initial concen- tration of hydrogen peroxide was higher. The experimental results were analyzed and explained according to the reac- tion mechanism of positive and negative feedback in this system.展开更多
基金This work was supported by the National Natural Science Foundation of China(Grant No.20103010)the Excellent Young Teachers Program of MOE,China.
文摘The spatiotemporal dynamics of the hydrogen peroxide-thiosulfate-sulfite-perchlorate acid system was in-vestigated in reaction-diffusion medium. In the Petri dish, pulse waves were discovered, which had the maximum life-time and the maximum traveling distance when the initial concentration of thiosulfate was increased. In addition, pulse waves contracted back before disappearing, and the pulse waves with red spot were observed when the initial concen- tration of hydrogen peroxide was higher. The experimental results were analyzed and explained according to the reac- tion mechanism of positive and negative feedback in this system.
