Figure 4
From: Self-assembly of Silver Nanoparticles and Multiwall Carbon Nanotubes on Decomposed GaAs Surfaces
A proposed mechanism of the combined structure formation. a Ag particles in toluene; b movement of contact line and the development of a sinusoidal interface where particles are captured; c droplet formation; d droplets shrinking (not to scale); e Outward flow and deepening of particles toward the substrate; f spot formation due to the deposition of the particles on the substrate and ring formation due the outward compensation