Labyrinthine instability

The labyrinthine instability has been theoretically studied by energy minimization [2]. These calculations indicated the existence of a critical minimum field required to establish the structures. However, neither the transition order nor the possibility of a hysteresis has been studied in the case of the labyrinthine instability. 

The stability analysis of roll patterns performed in the framework of the system (148), (149), reveals a skewed-varicose instability. Numerical simulations predict the development of labyrinthine, spiral and target patterns. 

Reference [147] reports the simultaneous analysis of spatiotemporal pattern formation in electrolytic oxidation of sulfide on a platinum disk using electrochemical methods and a CCD camera. A series resistor and a large electrode area facilitated measurement of kinetic instability across a wide range of the potential curve. Spatial patterns such as pulses and labyrinthine stripes, as well as temporal patterns like lionts, twinkling eyes, and alternate deposition and dissolution were observed at different experimental conditions. 

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