A need for mechanical control is hereditary to many microfluidic
circuits, and slime mold circuits are not an exception. In
principle, Physarum fluidic gates can be cascaded using optomechanical
coupling, e.g. the width of an output tube or the
speed of flow in the output tube could be detected by optical
means and the input tubes of subsequent gates could be stimulated
mechanically, though this is not an optimal solution