Controlling chemical turbulence by global delayed feedback: Pattern formation in catalytic CO oxidation on Pt(110)

被引：317

作者：

Kim, M ^{[1
]}

Bertram, M ^{[1
]}

Pollmann, M ^{[1
]}

von Oertzen, A ^{[1
]}

Mikhailov, AS ^{[1
]}

Rotermund, HH ^{[1
]}

Ertl, G ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, Phys Chem Abt, D-14195 Berlin, Germany

来源：

SCIENCE | 2001年 / 292卷 / 5520期

关键词：

D O I：

10.1126/science.1059478

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Control of spatiotemporal chaos is one of the central problems of nonlinear dynamics. We report on suppression of chemical turbulence by global delayed feedback using, as an example, catalytic carbon monoxide oxidation on a platinum (110) single-crystal surface and carbon monoxide partial pressure as the controlled feedback variable. When feedback intensity was increased, spiral-wave turbulence was transformed into new intermittent chaotic regimes with cascades of reproducing and annihilating local structures on the background of uniform oscillations. The global feedback further led to the development of cluster patterns and standing waves and to the stabilization of uniform oscillations. These findings are reproduced by theoretical simulations.

引用

页码：1357 / 1360

页数：4

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