Spatial pattern formation in a catalytic surface reaction: The facetting of Pt(110) in CO+O2.
Spatial pattern formation in a catalytic surface reaction: The facetting of Pt(110) in CO+O2.
复制标题
催化表面反应中的空间图案形成：CO O2 中 Pt(110) 的刻面。
作者：
Falta;Imbihl;Henzler
由Prigogihe[17]引入的术语“耗散结构”描述了一类广泛的非平衡系统，其中能量和/或物质的持续流动导致在空间或时间上有序的结构，例如引起动力学振荡或空间图案的形成。时间振荡和空间模式的形成是密切相关的，因为相同的运动不稳定性导致系统变量在时间上的周期性变化，也可能导致空间上的周期性变化。因此，人们经常观察时空结构，但也可以考虑非平衡结构的情况，它在空间中只是周期性的。这种在化学反应体系中很少观察到的结构是由图灵[20]首先讨论的，并相应地被称为“图灵结构”。
The term “dissipative structures” which was introduced by Prigogihe [17] describes a broad class of non-equilibrium systems where a constant flow of energy and/or matter leads to structures ordered in space or time, e.g. causes kinetic oscillations or spatial pattern formation. Temporal oscillations and spatial pattern formation are closely related since the same kinetic instabilities which lead to a periodic variation of the system variables in time may also induce a periodic variation in space. Consequently one often observes spatio-temporal structures, but one may also consider the case of a non-equilibrium structure which is only periodic in space. Such structures which rarely have been observed in chemical reaction systems were first discussed by Turing [20] and have been termed accordingly as “Turing structures”.