Spatial bistability: a source of complex dynamics. From spatiotemporal reaction-diffusion patterns to chemomechanical structures.
Spatial bistability: a source of complex dynamics. From spatiotemporal reaction-diffusion patterns to chemomechanical structures.
复制标题
空间双稳态：复杂动力学的来源。
作者：
J. Boissonade;P. De Kepper;F. Gauffre;I. Szalai
我们从实验和理论上证明，反应系统的特征是缓慢的诱导期，然后快速演化到平衡，当从一侧扩散进料的薄凝胶反应器中操作时，可以很容易地产生“空间双稳定性”。这种现象对应于两种不同的稳定稳态共存，而不破坏边界条件的对称性，可能是各种反应扩散不稳定性的根源。利用不同的化学反应，我们展示了如何产生静止脉冲、迷宫模式或时空振荡。除了简单的反应-扩散不稳定性之外，我们还证明了空间双稳定性与化学敏感凝胶的尺寸响应性的交叉耦合可以产生自主的时空形状模式，称为化学力学结构。
We show experimentally and theoretically that reaction systems characterized by a slow induction period followed by a fast evolution to equilibrium can readily generate "spatial bistability" when operated in thin gel reactors diffusively fed from one side. This phenomenon which corresponds to the coexistence of two different stable steady states, not breaking the symmetry of the boundary conditions, can be at the origin of diverse reaction-diffusion instabilities. Using different chemical reactions, we show how stationary pulses, labyrinthine patterns or spatiotemporal oscillations can be generated. Beyond simple reaction-diffusion instabilities, we also demonstrate that the cross coupling of spatial bistability with the size responsiveness of a chemosensitive gel can give rise to autonomous spatiotemporal shape patterns, referred to as chemomechanical structures.
通过 TNP-ADP 稳态荧光猝灭测量核苷酸与 IAF 标记的 Na /K( )-ATP 酶的结合。
影响因子：
3.8
作者：
Hellen,EH;Pratap,PR
通讯作者：
Pratap,PR