Dilute suspensions or solutions

Rather than take a limit of large separations between relatively small spheres a of incremental polarizability a (it ), we can think of interactions within dilute suspensions or solutions. At relatively large separations, the shape and the microscopic details of an effectively small speck become unimportant. The only feature that is of interest is that the dilute specks ever so slightly change the dielectric and ionic response of the suspension compared with that of the pure medium. When the suspension of spheres is vanishingly dilute, esusp is simply proportional to their number density N multiplied by a(/ ) / susp — m (/ ) + Naa(i ) [see Fig. L1.42(a)]. 

Dilute suspension or solution of colloids or macromolecules a, b at number densities Na,... 

In this section, we will limit om discussion to the most common PCS application - the scattering from particles in dilute suspensions or solutions, in which particles move and scatter independently without influence from other... 

For a polydisperse particulate system in dilute suspension or solution, the electric field ACF, g yT,K), is a summation of the exponential decay functions, each with a characteristic decay constant F which is the reciprocal of the time scale for the corresponding particle diffusion ... 

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