MULTI-ARMED VORTICES IN AN ACTIVE-CHEMICAL MEDIUM
MULTI-ARMED VORTICES IN AN ACTIVE-CHEMICAL MEDIUM
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DOI：
10.1038/296424a0
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发表时间：
1982-01-01
期刊：
影响因子：
64.8
通讯作者：
KRINSKY, VI
中科院分区：
文献类型：
--
作者：
AGLADZE, KI;KRINSKY, VI
非平衡系统中自组织的一个很好的例子是旋转螺旋涡的起源。这些漩涡已被观察到在广泛的活动介质中的社会变形虫Dictyosteelium discoideum的形态发生过程中3，4，在心肌中的一些疟疾5和Belousov-Zhabotinsky反应6 -9。所有这些漩涡都是简单的螺旋。旋转结构的高阶对称性，如多臂涡以前没有观察到实验。我们在活性化学介质中获得了双臂、三臂和四臂旋转螺旋涡。这些结构相当稳定，我们观察到它们的旋转超过半个小时，这与许多其他物理系统（如超流体4 He或超导体10，11）中不稳定的多涡形成鲜明对比。
An excellent example of self-organization in nonequilibrium systems1,2is the origination of rotating spiral vortices. These vortices have been observed in a wide range of active media—in the morphogenesis processes of social amoebaDictyostelium discoideum3,4, in cardiac muscle during some arrhythmias5and in the Belousov–Zhabotinsky reaction6–9. All these vortices are simple spirals. The rotating structures of a higher order of symmetry such as multiarmed vortices have not previously been observed experimentally. We have obtained two-, three- and four-armed rotating spiral vortices in an active chemical medium. These structures were appreciably stable and we observed their rotation for more than half an hour, which was in striking contrast to unstable multiple vortices in many other physical systems (such as superfluid4He or superconductors10,11).