ABSTRACT
Figure 27.12, numbers of sessile bubbles keep marching on maintaining a constant distance between them due to the slow feeding of air. When the flow rate of air is increased, the second drifting bubble develops before the first bubble establishes the sliding on the tilted surface and bumps into the first bubble as shown in Figure 27.14. When two bubbles merge, the buoyancy of the merged bubble becomes sufficient to detach the bubble from the surface. The marching bubbles on an inclined surface are an interesting demonstration of interfacial tension as a function of the surface tension of materials, which couldn’t be done without the combination of the capability to use the identical orifice and the variable surface energies attained by the cathodic plasma polymerization. This is an interesting demonstration that the unique capability of luminous chemical vapor deposition to modify the surface state of materials creates the possibility of investigating the fundamental phenomena that could not be otherwise examined.
