Figure 1
From: Particle movements provoke avalanche-like compaction in soft colloid filter cakes
Evolution of a filter cake of 27 \({\upmu }\)m sized PEG microgels inside a microfluidic PDMS channel during constant pressure filtration. The lines in (a) indicate the cake surface at the respective time. Visualization of the local cake movements by microgel rearrangement with avalanche-like network movements (b), and single-particle movements (c). We overlaid the filter cake surface at that respective time as a blue line and the porous filtration structure in white for better orientation. Illustration of the two types of rearrangement occurring in the filter cake (d). Position of the rearrangements (blue dots) in the filter cake at the respective filtration time and the filter cake thickness (black squares) (e).
