Observation of dynamic effects in the percolation transition in a «nonwetting liquid-nanoporous body» system

Filling of a nanoporous body with liquid metal upon pulsed pressure buildup to a level far exceeding the percolation-threshold critical pressure was experimentally studied. The onset of the oscillating filling regime was observed. It disappears on bringing pressure down to a value lower than the percolation-transition critical pressure and on increasing the characteristic time of pressure buildup above threshold. A model is suggested allowing the explanation of the observed effects.