OBSERVATION OF FRONT BIFURCATIONS IN CONTROLLED GEOMETRIES - FROM ONE TO 2 DIMENSIONS

被引：61

作者：

HAAS, G ^{[1
]}

BAR, M ^{[1
]}

KEVREKIDIS, IG ^{[1
]}

RASMUSSEN, PB ^{[1
]}

ROTERMUND, HH ^{[1
]}

ERTL, G ^{[1
]}

机构：

[1] PRINCETON UNIV,DEPT CHEM ENGN,PRINCETON,NJ

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.75.3560

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The introduction of microstructures in the form of quasi-one-dimensional channels on a Pt(100) surface allows the detection of front bifurcations for concentration waves from adsorbed O and CO species accompanying their catalytic reaction. At the exits of these channels into larger circular domains, the fronts can be reflected depending on the width of the channels and the external parameters. These findings are reproduced within a reaction-diffusion model.

引用

收藏

页码：3560 / 3563

页数：4

相关论文

共 24 条

[1] ROTATING SPIRAL WAVES CREATED BY GEOMETRY [J].

AGLADZE, K ;

KEENER, JP ;

MULLER, SC ;

PANFILOV, A .

SCIENCE, 1994, 264 (5166) :1746-1748

[2] SPIRAL WAVES IN A SURFACE-REACTION - MODEL-CALCULATIONS [J].

BAR, M ;

GOTTSCHALK, N ;

EISWIRTH, M ;

ERTL, G .

JOURNAL OF CHEMICAL PHYSICS, 1994, 100 (02) :1202-1214

[3] A MODEL FOR FAST COMPUTER-SIMULATION OF WAVES IN EXCITABLE MEDIA [J].

BARKLEY, D .

PHYSICA D, 1991, 49 (1-2) :61-70

[4] MEASUREMENT OF THE TRANSITION FROM UNIDIRECTIONAL TO BIDIRECTIONAL FRONT PROPAGATION INA REACTION-DIFFUSION SYSTEM [J].

BODE, M ;

REUTER, A ;

SCHMELING, R ;

PURWINS, HG .

PHYSICS LETTERS A, 1994, 185 (01) :70-76

[5] DYNAMIC FRONT TRANSITIONS AND SPIRAL-VORTEX NUCLEATION [J].

ELPHICK, C ;

HAGBERG, A ;

MERON, E .

PHYSICAL REVIEW E, 1995, 51 (04) :3052-3058

[6] A UHV-COMPATIBLE PHOTOELECTRON EMISSION MICROSCOPE FOR APPLICATIONS IN SURFACE SCIENCE [J].

ENGEL, W ;

KORDESCH, ME ;

ROTERMUND, HH ;

KUBALA, S ;

VONOERTZEN, A .

ULTRAMICROSCOPY, 1991, 36 (1-3) :148-153

[7] EFFECTS OF BOUNDARIES ON PATTERN-FORMATION - CATALYTIC-OXIDATION OF CO ON PLATINUM [J].

GRAHAM, MD ;

KEVREKIDIS, IG ;

ASAKURA, K ;

LAUTERBACH, J ;

KRISCHER, K ;

ROTERMUND, HH ;

ERTL, G .

SCIENCE, 1994, 264 (5155) :80-82

[8]

GUCKENHEIMER J, 1983, NONLINEAR OSCILLATIO, P358

[9] PATTERN-FORMATION IN NONGRADIENT REACTION-DIFFUSION SYSTEMS - THE EFFECTS OF FRONT BIFURCATIONS [J].

HAGBERG, A ;

MERON, E .

NONLINEARITY, 1994, 7 (03) :805-835

[10] Complex patterns in reaction-diffusion systems: A tale of two front instabilities [J].

Hagberg, Aric ;

Meron, Ehud .

CHAOS, 1994, 4 (03) :477-484