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Complex patterns in reactive microemulsions: Self-organized nanostructures?
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Image of FIG. 1.
FIG. 1.

The AOT molecule (left) and a water droplet containing the BZ reactants surrounded by an oriented monolayer of AOT molecules (right).

Image of FIG. 2.
FIG. 2.

Calculated amounts of inhibitor and activator in the oil phase of a BZ-AOT system relative to their initial amounts in the water phase.

Image of FIG. 3.
FIG. 3.

Schematic overview of patterns found in the BZ-AOT system.

Image of FIG. 4.
FIG. 4.

Turing patterns (from left to right, spots, mixed pattern, stripes) in a BZ-AOT system.

Image of FIG. 5.
FIG. 5.

Emergence of antispirals in the BZ-AOT system. Times (in seconds): (A) 1, (B) 17, (C) 37, (D) 113, (E) 132, (F) 146, (G) 225, (H) 242, and (I) 271. Frame size is . Each set of three horizontal snapshots shows different stages of antispiral formation during one period of bulk oscillations.

Image of FIG. 6.
FIG. 6.

Accelerating waves in the BZ-AOT system. Times of snapshots, from top left to lower right, are 90, 100, 114, 122, and .

Image of FIG. 7.
FIG. 7.

Dash waves in the BZ-AOT system. Snapshots (b)–(g) are taken, respectively, 1800, 935, 940, 945, 950, and after snapshot (a). Dotted square in (g) shows position of snapshots (c)–(f). Large rhomblike white spot in (a) is a fast-propagating phase wave. Arrows show a general direction of wave propagation. Size for (a), (b), (g) and for (c)–(f) . Wavelength is about ; wave velocity is .

Image of FIG. 8.
FIG. 8.

Segmented spiral waves. (a) Fully developed pair of spirals. (b) Dash waves approach as spiral begins to form segments. Size : (a) , (b) .

Image of FIG. 9.
FIG. 9.

Packet of plane waves in a BZ-AOT system. Arrow indicates direction of propagation. Size : .

Image of FIG. 10.
FIG. 10.

Localized Turing patterns in a -catalyzed BZ-AOT system. Size : .

Image of FIG. 11.
FIG. 11.

Propagation of a simulated one-dimensional wave packet. Numbers above wave packets indicate corresponding times. Here is the characteristic wavelength of the wave instability.

Image of FIG. 12.
FIG. 12.

Simulation of behavior of a localized one-dimensional (1D) perturbation (upper right) as a function of its width . The ordinate, which distinguishes among states, is arbitrary. Abbreviations: SS, steady state (assigned ordinate value, 0); , single stationary Turing peak (value, 1); , single oscillon (value, 2).

Image of FIG. 13.
FIG. 13.

Simulation of behavior of two identical toothlike initial perturbations separated by a gap of length (upper right). Symbols: +, SS; ◻, oscillon with two synchronously oscillating peaks; 엯, stationary Turing pattern with two peaks; ∎, oscillon with three synchronously oscillating peaks; ▴, pattern with three peaks, the middle one oscillating and the outer ones stationary ; ×, single oscillon; −, single stationary peak; ◇, oscillon with two peaks oscillating antiphase; ∗, two independent Turing or oscillatory peaks.


Generic image for table
Table I.

A model of the BZ-AOT system.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Complex patterns in reactive microemulsions: Self-organized nanostructures?