Discontinuously propagating waves in the bathoferroin-catalyzed Belousov-Zhabotinsky reaction incorporated into a microemulsion.

  title={Discontinuously propagating waves in the bathoferroin-catalyzed Belousov-Zhabotinsky reaction incorporated into a microemulsion.},
  author={Alexander A Cherkashin and Vladimir K. Vanag and Irving R. Epstein},
  journal={The Journal of chemical physics},
  volume={128 20},
Three new types of discontinuously propagating waves are reported in the bathoferroin-catalyzed Belousov-Zhabotinsky (BZ) reaction dispersed in water-in-oil Aerosol OT microemulsion. Jumping waves (JWs) are typically observed at or above room temperature and develop from the familiar trigger waves. Bubble waves (BWs) typically emerge from trigger or JWs at similar temperatures, while rotating waves (RWs) evolve from JW at higher temperatures (>40 degrees C). All these waves propagate… 

Patterns in the Belousov-Zhabotinsky reaction in water-in-oil microemulsion induced by a temperature gradient.

Anti-phase oscillatory Turing patterns, leaping waves, and chaotic waves emerge, depending on the temperature gradient and the average temperature, from the coupling between a low temperature Turing mode and a high temperature Hopf mode in the ferroin-catalysed Belousov-Zhabotinsky reaction.

A model for jumping and bubble waves in the Belousov-Zhabotinsky- aerosol OT system

We develop a four-variable model, based on the classic Field–Kőros–Noyes mechanism for the oscillatory Belousov-Zhabotinsky (BZ) reaction, that describes recently discovered jumping waves and bubble

Complex wave patterns in an effective reaction-diffusion model for chemical reactions in microemulsions.

The linear stability of the spatially homogeneous state in the resulting effective model is studied and the phase diagram of pattern formation is obtained, that is qualitatively similar to earlier experimental results for the Belousov-Zhabotinsky reaction in an aerosol OT (AOT)-water-in-oil microemulsion.

Dissipative structures in systems of diffusion-bonded chemical nano- and micro oscillators

In spatially extended classical Belousov-Zhabotinsky (BZ) reaction, trigger spiral or concentric waves usually occur. If the BZ reaction is dispersed into nanodroplets of water-in-oil emulsion, new

Segmented waves in a reaction-diffusion-convection system.

The appearance of segmented waves in a shallow layer of an excitable Belousov-Zhabotinsky solution is described and it is found that by varying the excitability of the reaction, and in turn the wavelength of the chemical fronts, it is possible to create a sort of hydrodynamic resonance structures (corridors), which are responsible for the segmentation process.

Modulation of volume fraction results in different kinetic effects in Belousov-Zhabotinsky reaction confined in AOT-reverse microemulsion.

The effects of volume fraction modulations on a Belousov-Zhabotinsky reaction catalyzed by the photosensitive Ru(bpy)(3)(+2) confined in an AOT microemulsion system are analyzed. Kinetic observables

Nonlinear behavior and fluctuation-induced dynamics in the photosensitive Belousov-Zhabotinsky reaction.

The role of fluctuations on the dynamics of a single droplet is investigated with stochastic simulations of an extension of the Field-Körös-Noyes (FKN) model taking into account the photosensitivity of the Belousov-Zhabotinsky reaction.

Temperature control of pattern formation in the Ru(bpy)(3)(2+)-catalyzed BZ-AOT system.

Using temperature as a control parameter, a transition from stationary Turing patterns to traveling waves at T = 50 degrees C is observed in the Ru(bpy)(3)(2+)-catalyzed Belousov-Zhabotinsky (BZ) reaction incorporated into the water nanodroplets of a water-in-oil aerosol OT (AOT) microemulsion.

Nanoscale changes induce microscale effects in Turing patterns.

A water-in-oil microemulsion loaded with a reaction-diffusion chemical system (Belousov-Zhabotinsky reaction) is able to exhibit Turing patterns that are believed to be responsible for

Long-lasting dashed waves in a reactive microemulsion.

Adding small amounts of the homopolymer poly(ethylene oxide) (PEO) lengthens the period during which dashed waves can persist for 12-14 h, in contrast to the 2-3 h found in earlier studies without added polymer.

"Black spots" in a surfactant-rich Belousov-Zhabotinsky reaction dispersed in a water-in-oil microemulsion system.

The Belousov-Zhabotinsky reaction dispersed in water-in-oil aerosol OT (AOT) microemulsion has been studied at small radius R(d) of water nanodroplets and stationary spotlike and labyrinthine Turing patterns are found close to the fully oxidized state.

Pattern formation in a tunable medium: the Belousov-Zhabotinsky reaction in an aerosol OT microemulsion.

A simple model is proposed to describe the spatially extended Belousov-Zhabotinsky system dispersed in water droplets of a reverse AOT microemulsion and the variety of patterns found is determined by the tunable microstructure of the medium.

Packet waves in a reaction-diffusion system.

Inwardly moving packet waves with negative curvature occur in experiments and in a model of the BZ-AOT system when the dispersion d omega(k)/dk is negative at the characteristic wave number k(0), which sheds light on the origin of anti-spirals.

Periodic Convection in the Bromate-Sulfite Reaction: A "Jumping" Wave

An unusual spatiotemporal phenomenon was observed in propagating fronts in the bromate-sulfite system with an initial pH gradient, but not in chlorate-sulfite nor iodate-sulfite systems. Periodic

Inwardly Rotating Spiral Waves in a Reaction-Diffusion System

Observations of inwardly rotating spirals found in the Belousov-Zhabotinsky reaction dispersed in water droplets of a water-in-oil microemulsion are reported.

Segmented spiral waves in a reaction-diffusion system

  • V. VanagI. Epstein
  • Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 2003
Observations of segmented spiral and target waves in the Belousov–Zhabotinsky reaction dispersed in water nanodroplets of a water-in-oil microemulsion form a link between Turing and trigger wave patterns and narrow the disparity between chemistry and biology.

Jumping solitary waves in an autonomous reaction-diffusion system with subcritical wave instability.

A new type of solitary waves are described, which propagate in such a manner that the pulse periodically disappears from its original position and reemerges at a fixed distance, and closely related solitary wave solutions in the quintic complex Ginzburg-Landau equation are demonstrated.

Dash waves in a reaction-diffusion system.

Observation of dash waves, which consist of wave segments regularly separated by gaps, moving coherently in the Belousov-Zhabotinsky system dispersed in water-in-oil microemulsion, is reported.