Figure 1

(a) Scheme of the experimental setup used to perform the experiments. Light is focused onto one of the gels through a beam splitter, which allows the recording of the evolution of both patterns with two CCD cameras. (b) Transversal view of the vertical chemical reactor used for the experiments. The design of the reactor allowed observation of the pattern through the front and back sides. Chemical reactants flowed following the arrows and reached the center, where the CFURs (gels and membranes) were placed.Reuse & Permissions

Figure 2

Snapshots of the experiment of spots–spots interaction. (a) corresponds to the illuminated layer $A$ and (b) corresponds to layer $B$. (c) is constructed by subtracting (a) and (b) as described in the text. (d), (e), and (f) are the corresponding numerical simulations showing complete agreement with the experimental results. Size of the experimental pictures $=$ 3.3 $\times$ 3.3 mm. Light intensity $=$ $500\times {10}^{-6}\pm 50\times {10}^{-6}$ $\text{W}/{\text{cm}}^2$. Light intensity for the simulations: ${\phi }_a$ $=$ ${\phi }_b$ $=$ 0.Reuse & Permissions

Figure 3

Snapshots of the experiment of stripes–spots interaction. (a) corresponds to the illuminated layer $A$ and (b) corresponds to layer $B$. (c) is the difference between the configuration in layer $A$ and layer $B$. (d), (e), and (f) are the corresponding numerical simulations in agreement with experimental results. Size of each picture $=$ 4.3 $\times$ 4.3 mm. Light intensity is $I=8500\times {10}^{-6}\pm 100\times {10}^{-6}$ $\text{W}/{\text{cm}}^2$. Light intensity for the simulations: ${\phi }_a$ $=$ 1.5; ${\phi }_b$ $=$ 0.Reuse & Permissions

Figure 4

Snapshots of the experiment of honeycomb–spots interaction. (a) corresponds to layer $A$, in which only the area below the dashed line is being illuminated. (b) corresponds to layer $B$. (c) is the difference between (a) and (b). (d), (e), and (f) are the corresponding numerical simulations in agreement with experimental results. Size of each picture $=$ 4.3 $\times$ 4.3 mm. Light intensity $I=12700\times {10}^{-6}\pm 100\times {10}^{-6}$ $\text{W}/{\text{cm}}^2$. Light intensity for the simulations: ${\phi }_a$ $=$ 2.1; ${\phi }_b$ $=$ 0.Reuse & Permissions

Figure 5

Snapshots of the experiment of steady state–spots interaction. (a) corresponds to layer $A$, which is being illuminated with very high light intensity, and (b) corresponds to layer $B$. (c) is the difference between (a) and (b). (d), (e), and (f) correspond to numerical simulations in agreement with experimental results. Size of each picture = 4.2 $\times$ 4.2 mm. Light intensity $I=21200\times {10}^{-6}\pm 100\times {10}^{-6}$ $\text{W}/{\text{cm}}^2$. Light intensity for the simulations: ${\phi }_a$ $=$ 3; ${\phi }_b$ $=$ 0.Reuse & Permissions

Figure 6

Numerical phase diagram showing the different behaviors observed for the relevant parameters in the system (namely, coupling strength $k_u$ $=$ $k_v$ and light intensity on layer $A$, ${\phi }_a$). Different symbols in the figure correspond with different spatial arrangements in both layers as follows: blue squares stand for hexagons $H_0$–hexagons $H_0$, red upward-pointing triangles stand for stripes–hexagons $H_0$, green circles stand for hexagons $H_{\pi }$–hexagons $H_0$, light blue stars stand for $H_{\pi }$–steady state, pink right-pointing triangles stand for steady state–steady state, green crosses stand for steady state–hexagons $H_0$, light blue left-pointing triangles stand for steady state–stripes, pink diamonds stand for stripes–stripes, and blue pentagrams stand for hexagons $H_{\pi }$–hexagons $H_{\pi }$ (where the first pattern corresponds to the illuminated layer $A$ and the second to the layer in darkness $B$). The gray area separates regions where the same type of pattern occurs in both layers from those regions where patterns are different in both layers. The dashed line separates regions where the light intensity is high enough to suppress the pattern in the illuminated layer. All other model parameters are the same as in previous simulations.Reuse & Permissions