Author(s): Filippo Miele, Ankur Deep Bordoloi, Pietro de Anna, Marco Dentz, Hervé Tabuteau, Verónica L. Morales, Partha Kumar Das, and Sascha Hilgenfeldt Colloidal transport and filtration in porous media are commonly described by single-collector models that assume an underlying homogeneous structure. We use microfluidic experiments, particle tracking, and simulations to observe pore-scale and macroscopic filtration. We show that colloidal trajector… [Phys. Rev. Lett. 137, 044002] Published Wed Jul 22, 2026