Figure 6. Predicting control over 1D pattern dimensions using RD modelling.

(a) The temporal concentration profiles of hydrazide H (green), aldehyde A (blue) and gelator HA₃ (yellow) obtained from the model (pH=4.0). (b) The temporal intensity profile along the distance between the reservoirs of H and A, as obtained from experiment (pH=4.0). The increase in intensity signifies the formation of HA₃. (c) Comparison between the RD model (coloured surface) and experiment (black dots). The reaction rate in the experiments was controlled by varying the pH between 3.3 (fast reaction) and 7.0 (slow reaction).