Real-rock microfluidic platform for quantifying chemical dissolution and mechanical erosion in a multiphase environment

bubble mobility. In the transport-limited regime, immobile bubbles confine flow to thin films, enhancing dissolution and particle detachment. In the reaction-limited regime, surface-adhered bubbles shield reactive areas and reduce shear stress, suppressing erosion. We derive scaling laws that distinguish chemical and mechanical erosion rates and validate a theoretical model for the critical Péclet number marking the regime transition. This study advances understanding of erosion under multiphase flow and introduces a versatile experimental framework for probing pore-scale reactive transport. The platform can be extended to other rock types and fluids, offering a powerful tool for studying geochemical, physical, and biological processes in complex subsurface environments.