During the frequency sweep the frequency is varied while the amplitude of the deformation -
Frequency sweep:The graph shows a behaviour of G' and G'' that is typical for a polymer melt or polymer solution.
The frequency sweep is very important for polymer melts: By measuring frequency sweeps at different temperatures the characteristics like melting point, glass transition, rubbery-
For dispersions (e.g. paints, cosmetics, comestible) the frequency sweep is less informative. Under favourable terms for this kind of samples this method can give a conclusion about their shelf life (sedimentation stability): If for low frequencies G' > G'', the dispersed particles should due to their gel structure still float and not sediment.