Graduate School of Integrated Sciences for Life, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima 739-8526, Japan.
Graduate School of Environment and Information Sciences, Yokohama National University (YNU), 79-7 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan.
J Phys Chem B. 2021 Apr 15;125(14):3638-3643. doi: 10.1021/acs.jpcb.0c11019. Epub 2021 Apr 2.
Various spatiotemporal patterns were created on the surface or in the body of cation-exchange resin beads which were loaded with the catalyst of the Belousov-Zhabotinsky (BZ) reaction. Either global oscillations (GO) or traveling waves (TW) and the switching between them were observed in the previous papers, but it was not clear how chemicals contribute to the reaction inside/around the BZ bead. In this paper, we scanned the electrical potential, , from +1 to -1 V (negative scan) and then turned from -1 to +1 V (positive scan) to control the switching between GO and TW. We found that the electrical switching potential from TW to GO, , and from GO to TW, , depended on the scanning direction of and the diameter of the bead, . The present study suggests that the electrode-induced increase of the inhibitor, Br, and the activator, HBrO, around the BZ bead plays an important role in determining and .
各种时空模式被创造于表面或在带有 Belousov-Zhabotinsky（BZ）反应催化剂的阳离子交换树脂珠的体内。在前人的论文中，我们观察到了全局震荡（GO）或传播波（TW）及其之间的转换，但尚不清楚化学物质如何促进 BZ 珠内/周围的反应。在本文中，我们扫描了电势能 ，从+1 到-1 V（负扫描），然后从-1 到+1 V（正扫描）以控制 GO 和 TW 之间的转换。我们发现从 TW 到 GO 的电切换势 ，以及从 GO 到 TW 的电切换势 ，取决于 和珠子直径 。本研究表明，电极诱导的 BZ 珠周围抑制剂 Br 和激活剂 HBrO 的增加在决定 和 中起着重要作用。
