PATTERN-FORMATION BY INTERACTING CHEMICAL FRONTS

被引:345
作者
LEE, KJ
MCCORMICK, WD
OUYANG, Q
SWINNEY, HL
机构
[1] UNIV TEXAS,CTR NONLINEAR DYNAM,AUSTIN,TX 78712
[2] UNIV TEXAS,DEPT PHYS,AUSTIN,TX 78712
关键词
D O I
10.1126/science.261.5118.192
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
Experiments on a bistable chemical reaction in a continuously fed thin gel layer reveal a new type of spatiotemporal pattern, one in which fronts propagate at a constant speed until they reach a critical separation (typically 0.4 millimeter) and stop. The resulting asymptotic state is a highly irregular stationary pattern that contrasts with the regular patterns such as hexagons, squares, and stripes that have been observed in many nonequilibrium systems. The observed patterns are initiated by a finite amplitude perturbation rather than through spontaneous symmetry breaking.
引用
收藏
页码:192 / 194
页数:3
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