  Spiral wave formations are ubiquitous in nature. In the present paper, the
excitation of spiral waves in the context of driven two-dimensional dusty
plasma (Yukawa system) has been demonstrated at particle level using molecular
dynamics simulations. The interaction amidst dust particles is modeled by
Yukawa potential to take account of the shielding of dust charges by the
lighter electron and ions species. Spatiotemporal evolution of these spiral
waves has been characterized as a function of frequency and amplitude of the
driving force, dust neutral collisions etc. The effect of strong coupling has
been studied which show that the excited spiral wave structures get clearer as
the medium gets more strongly coupled. The radial propagation speed of the
spiral wave is observed to remain unaltered with the coupling parameter.
However, it is found to depend on the screening parameter of the dust medium
and decreases when it is increased. In the crystalline phase (with screening
parameter \k{appa} > 0.58), spiral wavefront are shown to be hexagonal in
shape. This shows that the radial propagation speed depends on the
interparticle spacing.
