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Ren L, Fan B, Gao Q, et al. Experimental, numerical, and mechanistic analysis of the nonmonotonic relationship between oscillatory frequency and photointensity for the photosensitive Belousov-Zhabotinsky oscillator. Chaos. 2015;25(6):064607doi: 10.1063/1.4921693.
Ren, L., Fan, B., Gao, Q., Zhao, Y., Luo, H., Xia, Y., Lu, X., & Epstein, I. R. (2015). Experimental, numerical, and mechanistic analysis of the nonmonotonic relationship between oscillatory frequency and photointensity for the photosensitive Belousov-Zhabotinsky oscillator. Chaos (Woodbury, N.Y.), 25(6), 064607. https://doi.org/10.1063/1.4921693
Ren, Lin, et al. "Experimental, numerical, and mechanistic analysis of the nonmonotonic relationship between oscillatory frequency and photointensity for the photosensitive Belousov-Zhabotinsky oscillator." Chaos (Woodbury, N.Y.) vol. 25,6 (2015): 064607. doi: https://doi.org/10.1063/1.4921693
Ren L, Fan B, Gao Q, Zhao Y, Luo H, Xia Y, Lu X, Epstein IR. Experimental, numerical, and mechanistic analysis of the nonmonotonic relationship between oscillatory frequency and photointensity for the photosensitive Belousov-Zhabotinsky oscillator. Chaos. 2015 Jun;25(6):064607. doi: 10.1063/1.4921693. PMID: 26117132.
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Chaos. 2015 Jun;25(6):064607. doi: 10.1063/1.4921693.

Experimental, numerical, and mechanistic analysis of the nonmonotonic relationship between oscillatory frequency and photointensity for the photosensitive Belousov-Zhabotinsky oscillator.

Chaos (Woodbury, N.Y.)

Lin Ren, Bowen Fan, Qingyu Gao, Yuemin Zhao, Hainan Luo, Yahui Xia, Xingjie Lu, Irving R Epstein

Affiliations

  1. College of Chemical Engineering, China University of Mining and Technology, Xuzhou 221008, China.
  2. Department of Chemistry and Volen Center for Complex Systems, MS 015, Brandeis University, Waltham, Massachusetts 02454-9110, USA.

PMID: 26117132 DOI: 10.1063/1.4921693

Abstract

The oscillation frequency of a nonlinear reaction system acts as a key factor for interaction and superposition of spatiotemporal patterns. To control and design spatiotemporal patterns in oscillatory media, it is important to establish the dominant frequency-related mechanism and the effects of external forces and species concentrations on oscillatory frequency. In the Ru(bipy)3(2+)-catalyzed Belousov-Zhabotinsky oscillator, a nonmonotonic relationship exists between light intensity and oscillatory frequency (I-F relationship), which is composed of fast photopromotion and slow photoinhibition regions in the oscillation frequency curve. In this work, we identify the essential mechanistic step of the I-F relationship: the previously proposed photoreaction Ru(II)* + Ru(II) + BrO3(-) + 3H(+) → HBrO2 + 2Ru(III) + H2O, which has both effects of frequency-shortening and frequency-lengthening. The concentrations of species can shift the light intensity that produces the maximum frequency, which we simulate and explain with a mechanistic model. This result will benefit studies of pattern formation and biomimetic movement of oscillating polymer gels.

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