为探究自振荡凝胶的自组织特性,基于耗散结构理论探讨BZ(Belousov-Zhabotinsky)反应的周期性结构,并利用Andronov-Hopf分岔理论分析自振荡凝胶化学能守恒关系;基于反应-扩散不稳定性原理进行仿真模拟与分析,探讨化学图斑的形成机制。研究发现,驱动自振荡凝胶机械运动的BZ反应是典型的远离热力学平衡态系统,过高的化学势输入导致系统失稳,在涨落效应的激励下凝胶自发进行周期性的形变作用。BZ反应动力学特性的研究为探索和调控智能软材料提供理论支撑。
In order to study the property of self-oscillating gels, dissipative structure theory is applied to analyze the oscillating dynamics of the Belousov-Zhabotinsky (BZ) reaction, and Andronov-Hopf bifurcation is adopted for the BZ reaction model to study the occurrence and energy status and periodic change between chemical and mechanical potential; and its complex nonlinear characteristics are the key to the force-chemical coupling behavior of self-oscillating gels. From this study, we find that BZ reaction a typical system that is far from thermodynamic equilibrium, and the extra potential provided from the inputs might cause the system to destabilize, and with the onset of fluctuations, periodic deformation between swelling and deswelling takes place. The study of BZ rection dynamically could aid exploration on adjusting smart/ soft material that exhibits heartbeat-like behaviors
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