The corona splash due to the impact of a liquid drop on a smooth dry substrate is investigated with high-speed photography. A striking phenomenon is observed: splashing can be completely suppressed by decreasing the pressure of the surrounding gas. The threshold pressure where a splash first occurs is measured as a function of the impact velocity and found to scale with the molecular weight of ...

We investigate the impact of droplets of dense suspensions onto a solid substrate. We show that a global hydrodynamic balance is unable to predict the splash onset and propose to replace it by an energy balance at the level of the particles in the suspension. We experimentally verify that the resulting, particle-based Weber number gives a reliable, particle size and density dependent splash ons...

The use of dynamic instruction architectures based on eld-programmable gate arrays (FPGAs) is described. Using this approach, an application speciic instruction based system has been designed for image segmentation which is an important stage in a computer vision system. The speciic application of interest here is texture-based page layout segmentation for document images. The complete segmenta...