Ito Kentaro, Ezaki Takato, Suzuki Shogo, Kobayashi Ryo, Hara Yusuke, Nakata Satoshi
Graduate School of Science, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan.
Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba Central 5, 1-1-1 Higashi, Tsukuba 305-8565, Japan.
J Phys Chem B. 2016 Mar 24;120(11):2977-83. doi: 10.1021/acs.jpcb.6b00873. Epub 2016 Mar 14.
Two coupled polymer gels, showing volume oscillation caused by the Belousov-Zhabotinsky (BZ) reaction, were investigated to understand the system composed of mechanically coupled chemical oscillators. The two gels were connected with a movable plastic sheet in between and placed under constant compression. Synchronization between two identical gels occurred in a range of compression ratios. The phase difference between the two oscillating gels was not zero; instead, they showed alternate swelling-deswelling oscillations. Similar phenomena were also observed with gels of different sizes and natural oscillation periods. The experimental results suggest that a physical change in one gel can lead to a chemical change in the other and vice versa. These results were qualitatively reproduced by a mathematical model based on coupled chemical oscillators.
研究了两种耦合聚合物凝胶，它们呈现出由贝洛索夫-扎博廷斯基（BZ）反应引起的体积振荡，以了解由机械耦合化学振荡器组成的系统。两种凝胶之间用一块可移动的塑料片连接，并置于恒定压缩之下。在一定压缩比范围内，两个相同的凝胶之间发生了同步。两个振荡凝胶之间的相位差不为零；相反，它们呈现出交替的膨胀-收缩振荡。在不同尺寸和自然振荡周期的凝胶中也观察到了类似现象。实验结果表明，一种凝胶中的物理变化会导致另一种凝胶中的化学变化，反之亦然。基于耦合化学振荡器的数学模型对这些结果进行了定性再现。
