Dynamics of a bubble/drop impacting a solid surface has been investigated through experimental and computational methods. First, the bubble-wall interaction has been characterized with a small air bubble as it impacts a solid substrate of different wall angles. We numerically solved a force balance including buoyancy, hydrodynamic inertia & drag, lift and thin film force to determine the bubble motion. Specifically, shear stress generated on the wall has been calculated and compared with bacterium adhesion force in order to evaluate a potential sanitization function. Next, the drop interaction with a monolayer of glass particles, deposited on a solid surface, has been investigated. We show that a small amount of particles on the surface can trigger the corona splashing via interactions between the rim and particles. Upon the drop impact and spreading, some particles can stay in front of the rim and form the packed area which finally will deform the rim and result in corona splashing. The splashing on a particulate bed can lead to a better understanding of soil loss and erosion dynamics due to the raindrops impacts.