Abstract
The dynamics of strongly interacting colloidal particles is studied in the range of medium to high particle concentrations. Both the short-range ordered liquid phase and the long-term ordered crystal phase are investigated by means of photon correlation spectroscopy. The results are discussed in terms of a memory function formalism which is shown to be applicable for both the liquids and the crystals. The viscoelastic approximation for the memory function describes the experimental results in the liquid phase very well. For the first time results on single crystals are reported which exhibit a purely elastic behaviour. The theory enables the authors to extract information on the elastic moduli and sound velocities of the systems from the data, which in principle yield information on the particle interaction potential. The 'phonon' dispersion of colloidal crystals is also presented.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
