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. 2012 Aug 1;9(76):3129–3139. doi: 10.1098/rsif.2012.0512

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Figure 8. — Dynamical evolution of a trap that is near spontaneous buckling: (0) rest position. (1) A mechanical disturbance is added, as a consequence of a prey touching a trigger hair, elevating the pressure difference above buckling threshold, (2) the door is thus opening and (3) is fully opened, so that the pressure difference decreases. (4) Owing to its elasticity, the door closes back; after some oscillations, (5) the pressure difference slowly rises again because of active pumping of fluid, recovering the equilibrium position (0). These results are computed for region A with the following parameters c = 1.38 and p₀ = 0.5581 and initial conditions: z = 1, , p = 0 and v = 1. (Online version in colour.)

Inline graphic — Dynamical evolution of a trap that is near spontaneous buckling: (0) rest position. (1) A mechanical disturbance is added, as a consequence of a prey touching a trigger hair, elevating the pressure difference above buckling threshold, (2) the door is thus opening and (3) is fully opened, so that the pressure difference decreases. (4) Owing to its elasticity, the door closes back; after some oscillations, (5) the pressure difference slowly rises again because of active pumping of fluid, recovering the equilibrium position (0). These results are computed for region A with the following parameters c = 1.38 and p₀ = 0.5581 and initial conditions: z = 1, , p = 0 and v = 1. (Online version in colour.)